Display device

Abstract

A display device includes a first substrate, a first light emitting unit, a first lens unit, a first prism unit, a first interposer, and a second interposer. The first light-emitting unit is arranged on the first substrate; the first lens unit is oppositely arranged on the first light-emitting unit; the first prism unit is oppositely arranged on the first lens unit; the first interposer is disposed between the first lens unit and the first prism unit. The second interposer is disposed between the first light emitting unit and the first lens unit.

Description

TECHNICAL FIELD

[0001] The present application relates to a display device, in particular to a display device with a luminance center offset. BACKGROUND

[0002] With the development of digital technology, display devices have been widely used in various aspects of daily life, such as televisions, computers, mobile phones, vehicle displays, and other modern information products. At the same time, display devices are constantly developing towards lightness, thinness, smallness, and fashion. In existing display devices, light-emitting diode display devices (LED display devices), especially micro light-emitting diode display devices (Micro LED display devices), have become one of the mainstream display devices due to their low power consumption, high contrast, wide color gamut, high brightness, small size, thinness, energy saving, and other advantages.

[0003] Considering the usage habits of most users, the luminance center of known display devices is usually designed at the front of the display surface. However, in some applications, such as in the application of vehicle displays, the user or viewer may not be exactly in front of the display device, and therefore cannot view the image of the display device at the luminance center of the display device. SUMMARY

[0004] The present application provides a display device, which can converge its luminance so that its luminance center is offset.

[0005] A display device according to the present application includes a first substrate, a first light-emitting unit, a first lens unit, a first prism unit, a first interlayer, and a second interlayer. The first light-emitting unit is disposed on the first substrate; the first lens unit is disposed opposite the first light-emitting unit; the first prism unit is disposed opposite the first lens unit; the first interlayer is disposed between the first lens unit and the first prism unit; and the second interlayer is disposed between the first light-emitting unit and the first lens unit. BRIEF DESCRIPTION OF DRAWINGS

[0006] In order to make the above objectives, features and advantages of the present application more apparent, the specific embodiments of the present application will be described in detail below with reference to the accompanying drawings, in which:

[0007] Figure 1A FIG. 1 is a partial cross-sectional schematic view of a display device according to a first embodiment of the present application.

[0008] Figure 1B FIG. 2 is a simplified schematic view of a display device according to a first embodiment of the present application, assuming that light emitted from the first light-emitting unit directly enters the air medium after passing through the first lens unit.

[0009] Figure 1CThis is a simplified schematic diagram assuming that the light emitted from the first light-emitting unit enters the first intermediate layer directly after passing through the first lens unit.

[0010] Figure 1D for Figure 1A The diagram shows a simplified representation of the display device in which light passes sequentially through a first interposer layer, a first prism unit, and a second substrate.

[0011] Figure 2A This is a partial cross-sectional schematic diagram of a display device according to a second embodiment of the present invention.

[0012] Figure 2B for Figure 2A The diagram shows a simplified representation of the display device in which light passes sequentially through a first interposer layer, a first prism unit, and a second substrate.

[0013] Figure 3A This is a partial cross-sectional schematic diagram of a display device according to a third embodiment of the present invention.

[0014] Figure 3B for Figure 3A The diagram shows a simplified representation of the display device in which light passes sequentially through a first interposer layer, a first prism unit, and a second substrate.

[0015] Figure 4 This is a partial cross-sectional schematic diagram of the display device according to the fourth embodiment of the present invention.

[0016] Figure 5 and Figure 6 This is a partial cross-sectional schematic diagram of different embodiments of the display device according to the fifth embodiment of the present invention.

[0017] Figure 7 This is a top view schematic diagram of a display device according to an embodiment of the present invention. Detailed Implementation

[0018] The following description, with reference to the accompanying drawings, will illustrate a display device according to a preferred embodiment of the present invention, wherein the same components will be described using the same reference numerals. It should be understood that the following description provides many different embodiments for implementing various embodiments of the present invention. The specific components and arrangements described below are merely for the simple and clear description of some embodiments of the present invention. Of course, these embodiments are for illustrative purposes only and are not intended to limit the scope of the invention. Furthermore, repeated reference numerals or designations may be used in different embodiments; these repetitions are merely for the simple and clear description of some embodiments of the present invention and do not represent any association between the different embodiments and / or structures discussed. Moreover, when referring to a film layer being located on or above another film layer, this includes situations where one film layer is in direct contact with another film layer; or, it may also include situations where one or more other film layers are spaced apart, in which case one film layer may not be in direct contact with another film layer.

[0019] Relative terms, such as "lower" or "bottom" and "higher" or "top," may be used in the embodiments to describe the relative relationship of one component of the figures to another. It is understood that if the apparatus in the figures is flipped upside down, the component described as being on the "lower" side will become the component on the "higher" side.

[0020] Here, the terms "about," "approximately," and "roughly" generally indicate within 20% of a given value or range, preferably within 10%, and even more preferably within 5%, or within 3%, or within 2%, or within 1%, or within 0.5%. The quantities given here are approximate quantities, meaning that the meaning of "about," "approximately," and "roughly" may be implied even without specific mention of them.

[0021] It is understood that although terms such as "first," "second," and "third" may be used herein to describe various components, constituent parts, regions, layers, and / or portions, these components, constituent parts, regions, layers, and / or portions should not be limited by these terms, and these terms are only used to distinguish different components, constituent parts, regions, layers, and / or portions. Therefore, a first component, constituent part, region, layer, and / or portion discussed below may be referred to as a second component, constituent part, region, layer, and / or portion without departing from the teachings of some embodiments of the present invention.

[0022] Unless otherwise defined, all terms used herein (including technical and scientific terms) have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. It is understood that these terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning consistent with the background or context of the relevant art and this invention, and should not be interpreted in an idealized or overly formal manner, unless specifically defined in the embodiments of the invention.

[0023] Some embodiments of the present invention can be understood in conjunction with the accompanying drawings, which are also considered part of the description of the embodiments of the present invention. It should be understood that the drawings of the embodiments of the present invention are not shown to scale of actual devices and components. The shape and thickness of the embodiments may be exaggerated in the drawings to clearly illustrate the features of the embodiments of the present invention. Furthermore, the structures and devices in the drawings are shown schematically to clearly illustrate the features of the embodiments of the present invention.

[0024] In some embodiments of the present invention, relative terms such as "down," "up," "parallel," "vertical," "below," "above," "top," "bottom," etc., should be understood as the orientation shown in the paragraph and related figures. These relative terms are for illustrative purposes only and do not imply that the described device must be manufactured or operated in a specific orientation. Terms related to joining or connecting, such as "connected" or "linked," unless specifically defined, may refer to two structures being in direct contact, or to two structures not being in direct contact but with another structure disposed between them. Furthermore, these terms related to joining or connecting may also include cases where both structures are movable or both structures are fixed.

[0025] It is worth noting that in this invention, the term "substrate" may include components already formed on a transparent substrate and various film layers covering the substrate, on which any desired multiple active components (such as transistors) may have been formed; however, for the sake of simplicity in the drawings, only a flat substrate is used here.

[0026] Please refer to Figure 1A As shown, Figure 1A This is a partial cross-sectional schematic diagram of an electronic device 10 according to a first embodiment of the present invention. The electronic device 10 is, for example, a display device 10. For ease of explanation, the following description uses a display device 10 as an example. Figure 1A As shown, the display device 10 may include a first substrate 11, a plurality of light-emitting units 120, a plurality of lens units 130, a plurality of prism units 140, a first interposer layer 15, and a second interposer layer 16. The plurality of light-emitting units 120 are disposed on the first substrate, the plurality of lens units 130 are disposed on the plurality of light-emitting units 120, and the plurality of prism units 140 are disposed on the plurality of lens units 130. The first interposer layer 15 is disposed between the plurality of lens units 130 and the plurality of prism units 140. The second interposer layer 16 is disposed between the plurality of light-emitting units 120 and the plurality of lens units 130.

[0027] In this embodiment, the material of the first interposer 15 may include optically transparent adhesive (OCA), optically transparent resin (OCR), or other suitable transparent adhesive materials (such as photoresist), and the present invention is not limited thereto. In this embodiment, the material of the second interposer 16 may include optically transparent adhesive (OCA), optically transparent resin (OCR), or other suitable transparent adhesive materials (such as photoresist), and the present invention is not limited thereto. Furthermore, in one embodiment, the first interposer 15 and / or the second interposer 16 may not have any film layer material, but may be composed of air, and the present invention is not limited thereto. Furthermore, in one embodiment, the first interposer 15 and / or the second interposer 16 may be a planarization layer, and the present invention is not limited thereto. It should be noted that the materials of the first interposer 15 and the second interposer 16 may be the same material or different materials, and the present invention is not limited thereto.

[0028] Please refer to Figure 7 The first substrate 11 includes multiple pixel regions P, which can be arranged in a matrix. Figure 1A for Figure 7 A cross-sectional view of the tangent line AA, simply showing only three pixel areas P. (See diagram below.) Figure 1A As shown, among the plurality of light-emitting units 120, one light-emitting unit corresponds to one pixel region P. Taking one pixel region P as an example, the first light-emitting unit 121 is disposed on the first substrate 11 and located in pixel region P1. One lens unit (e.g., the first lens unit 131) of the plurality of lens units 130 is disposed opposite to the first light-emitting unit 121. One prism unit (e.g., the first prism unit 141) of the plurality of prism units 140 is disposed opposite to the first lens unit 131. A first interposer layer 15 is disposed between the first lens unit 131 and the first prism unit 141, and a second interposer layer 16 is disposed between the first light-emitting unit 121 and the first lens unit 131. Figure 1A In this context, "relatively arranged" can be interpreted as being arranged relative to each other in the normal direction Z of the first substrate 11. In direction Z, the first lens unit 131 can overlap the first prism unit 141, and the first prism unit 141 can overlap the first light-emitting unit 121.

[0029] Please refer to Figure 1A Generally, the brightness center of the light-emitting unit 120 is located in the normal direction Z of the first substrate 11. According to the present invention, by appropriately arranging the plurality of prism units 140, the direction of light emission L2 from the display device 10 can be shifted relative to the normal direction Z. For example... Figure 1DAs shown, the offset angle of the emitted light L2 relative to the normal direction Z is the second angle θ2. That is, the angle between the direction D2 of the emitted light L2 and the normal direction Z is the second angle θ2. The emitted light ray (i.e., emitted light L2) has maximum brightness in the direction D2. In other words, when measuring the brightness of the emitted light ray, the brightness measured in the direction D2 is greater than the brightness measured in the direction Z.

[0030] According to some embodiments, in Figure 1A In this configuration, a second light-emitting unit 122 and a third light-emitting unit 123 are disposed on a first substrate 11. A second lens unit 132 and a third lens unit 133 are respectively disposed opposite to each other on the second light-emitting unit 122 and the third light-emitting unit 123. A second prism unit 142 and a third prism unit 143 are respectively disposed opposite to each other on the second lens unit 132 and the third lens unit 133. A first intermediary layer 15 is disposed between the plurality of lens units (including the first lens unit 131, the second lens unit 132, and the third lens unit 133) and the plurality of prism units (including the first prism unit 141, the second prism unit 142, and the third prism unit 143). A second intermediary layer 16 is disposed between the plurality of light-emitting units (including the first light-emitting unit 121, the second light-emitting unit 122, and the third light-emitting unit 123) and the plurality of lens units (including the first lens unit 131, the second lens unit 132, and the third lens unit 133). For ease of explanation, Figure 1A Only three pixel areas P and three light-emitting units 120 are shown in the image, but this is not intended to limit the invention. Other light-emitting units 120, other lens units 130, and other prism units 140 can also be arranged in a similar manner as described above, and will not be repeated here.

[0031] In addition, such as Figure 1A As shown, the display device 10 of this embodiment may further include a plurality of color filter units 170, disposed between a plurality of light-emitting units 120 and a plurality of lens units 130. In the Z direction, one color filter unit 170 may be correspondingly disposed with one lens unit 130 and one light-emitting unit 120. Taking one light-emitting unit (e.g., the first light-emitting unit 121) as an example, the first color filter unit 171 may be correspondingly disposed with the first lens unit 131 and the first light-emitting unit 121. The first color filter unit 171 may overlap the first lens unit 131 and may overlap the first light-emitting unit 121 in a corresponding arrangement. The color filter unit 170 may be red, green, blue, or other colors, without limitation. According to some embodiments, three adjacent color filter units may be different colors. For example, Figure 1A In this process, the color filter units 172, 171, and 173 can be different colors. For example, the color filter units 172, 171, and 173 can be red, green, and blue, respectively.

[0032] According to some embodiments, in Figure 1A In this configuration, the plurality of color filter units 170 may further include a second color filter unit 172 and a third color filter unit 173. The second color filter unit 172 is disposed between the second light-emitting unit 122 and the second lens unit 132. The second intermediary layer 16 is disposed between the second light-emitting unit 122 and the second color filter unit 172. For ease of explanation, Figure 1A Only three pixel areas P and three color filter units 170 are shown in the image, but this is not intended to limit the invention. The third color filter unit 173 and other color filter units can also be configured in a similar manner as described above, and will not be repeated here.

[0033] In one embodiment, a light-shielding unit 174 may be disposed between the color filter units 170. For example, such as Figure 1A As shown, a light-shielding material layer 700 can be formed on the second intermediate layer 16 using a coating process. Then, this light-shielding material layer 700 is patterned using, for example, a photolithography process to form a plurality of light-shielding units 174. A plurality of openings 710 can be defined between two adjacent light-shielding units 174. Next, a plurality of color filter units 170 can be disposed within the plurality of openings 710 of the light-shielding material layer 700. The light-shielding units 174 can be disposed between two adjacent color filter units 170, for example, between adjacent color filter units 171 and 172. According to some embodiments, the light-shielding material layer 700 and the light-shielding units 174 may include organic materials or organic photoresists, such as black organic materials or black organic photoresists.

[0034] like Figure 1A As shown, the first lens unit 131, the second lens unit 132, and the third lens unit 133 are respectively disposed opposite to the first light-emitting unit 121, the second light-emitting unit 122, and the third light-emitting unit 123. Their configuration is such that the light emitted by the first light-emitting unit 121, the second light-emitting unit 122, and the third light-emitting unit 123 is concentrated primarily in a normal direction Z parallel to the upper surface 111 of the first substrate 11, thereby improving the brightness and light emission efficiency of the display device. The upper surface 111 of the first substrate 11 is parallel to the plane defined by directions X and Y, and the normal direction Z is perpendicular to the upper surface 111 of the first substrate 11.

[0035] Figure 1B This is a simplified schematic diagram assuming that the light emitted from the first light-emitting unit 121 enters the air medium directly after passing through the first lens unit 131. Figure 1C This is a simplified schematic diagram assuming that the light emitted from the first light-emitting unit 121 enters the first intermediate layer 15 directly after passing through the first lens unit 131.

[0036] like Figure 1B As shown, taking the first light-emitting unit 121 as an example, assuming that the light emitted from the first light-emitting unit 121 directly enters the air medium AIR after passing through the first lens unit 131, the first light-emitting unit 121 can have a half-fading angle θ. FWHM The light emitted by the first light-emitting unit 121 has maximum brightness in the normal direction Z of the first substrate 11. The brightness of the light emitted by the first light-emitting unit 121 gradually decreases as the angle of deviation from the normal direction Z increases. When the intensity of the light decreases to 50% of the maximum brightness, this angle of deviation is the half-fading angle θ. FWHM That is, as Figure 1B As shown, the brightness of light ray Lb is 50% of the maximum brightness, and the angle between the direction of light ray Lb and the normal direction Z of the first substrate 11 is the half-fading angle θ. FWHM .in accordance with Figure 1B As shown and Snell's law, we can obtain the following equation (1):

[0037] sin(θ lens ) * n lens = sin(θ) FWHM Equation (1) * 1.0

[0038] Where, θ lens n represents the angle of incidence of the light ray that passes through the first lens unit 131 and enters the air medium AIR. lens θ represents the refractive index of the first lens unit 131. FWHM The n represents the exit angle of the light rays that pass through the first lens unit 131 and enter the air medium AIR. air It represents the refractive index of air.

[0039] In addition, such as Figure 1C As shown, taking the first light-emitting unit 121 as an example, assuming that the light emitted from the first light-emitting unit 121 directly enters the first intermediate layer 15 after passing through the first lens unit 131, the first light-emitting unit 121 can have a half-fading angle θ. FWHM1 The intensity of light emitted from the first light-emitting unit 121 and passing through the first lens unit 131 is defined as follows: when the light rays are mainly concentrated in the normal direction Z parallel to the first substrate 11, the intensity of the light rays incident on the first interposer layer 15 gradually decreases as the angle of deviation from the normal direction Z increases. The angle of this light ray deviation when the intensity decreases to 50% of the maximum brightness is the half-fading angle θ. FWHM1 That is, as Figure 1C As shown, the brightness of the Lc ray is 50% of the maximum brightness, and the angle between the direction of the Lc ray and the normal direction Z of the first substrate 11 is the half-fading angle θ.FWHM1 .in accordance with Figure 1C As shown and Snell's law, we can obtain the following equation (2):

[0040] sin(θ lens ) * n lens = sin(θ) FWHM1 ) * n PLN1 Equation (2)

[0041] Where, θ lens The angle of incidence, n, represents the angle of incidence of the light rays that pass through the first lens unit 131 and enter the first interposer layer 15. lens θ represents the refractive index of the first lens unit 131. FWHM1 The n represents the exit angle of the light rays that pass through the first lens unit 131 and enter the first interposer layer 15. PLN1 This represents the refractive index of the first intermediate layer 15.

[0042] Combining equations (1) and (2), we can obtain the following relation (3):

[0043] sin(θ FWHM1 ) * n PLN1 = sin(θ) FWHM Equation (3) * 1.0

[0044] like Figure 1A As shown in a cross-sectional view of the display device 10, the first prism unit 141 has a first side 141a, a second side 141b, and a hypotenuse 141c. The first side 141a is parallel to the normal direction Z of the first substrate 11, and the second side 141b connects to the first side 141a to form a right angle. The first prism unit 141 is disposed relative to the first lens unit 131, that is, the first prism unit 141 overlaps the first lens unit 131. The connection between an edge 131a of the first lens unit 131 and an edge 141d of the opposite first prism unit 141 forms a first angle θ0 with the normal direction Z of the first substrate 11. Edge 141d is the intersection of the hypotenuse 141c and the second side 141b of the first prism unit 141. The edges 131a and 141d of the first lens unit 131 and the first prism unit 141 are on the same side. Therefore, under the premise of effectively improving brightness and light extraction efficiency, the aforementioned first included angle θ0 can be set to be greater than or equal to the aforementioned half-decay angle θ. FWHM1 That is, at least 50% of the maximum brightness of the light can be received by the first prism unit 141. In other words, by designing the first included angle θ0 to have the minimum angle, the first prism unit 141 can be designed to have the minimum width (the lower limit of the width). The following equation (4) can be derived from the above equation (3), that is, the first included angle θ0 satisfies the following equation:

[0045] θ0 ≥ θ FWHM1 = arcsin [sin(θ) FWHM ) / n PLN1 Equation (4)

[0046] According to other embodiments, the half-decay angle θ can be measured at the position where light is emitted from the lens unit 130. FWHM In practice, the measured half-decay angle θ can be used as a reference. FWHM Substituting the angle value into equation (4), the lower limit of the first included angle θ0 can be calculated, and a suitable first interposer 15 can be selected to match the refractive index n of the first interposer 15. PLN1 .

[0047] Next, by considering the positions of two adjacent light-emitting units, the first included angle θ0 is designed to have a maximum angle, and the first prism unit 141 is designed to have an upper limit on its width. The following explanation states that the maximum range of the first included angle θ0 can be defined based on the width of the light-emitting unit (e.g., the first light-emitting unit 121) and the lens unit (e.g., the first lens unit 131). That is, the offset of light rays from the lowermost edge to the uppermost edge of the first interposer layer 15 will not exceed the center between two adjacent light-emitting units (e.g., the first light-emitting unit 121 and the second light-emitting unit 122). In other words, if the prism unit 140 within a pixel has too wide a width, the emitted light rays may affect the light emitted by neighboring pixels. Therefore, triangle T1 can be defined as follows: its apex is the first included angle θ0, its height is the thickness (or height) of the first interposer layer 15, and its base is half the distance between two adjacent light-emitting units (e.g., the distance between the center of the first light-emitting unit 121 and the center of the second light-emitting unit 122) minus half the width of the first lens unit 131. In other words, as... Figure 1A As shown, triangle T1 has three vertices. One vertex corresponds to an edge 131a of the first lens unit 131, another vertex corresponds to an edge 141d of the first prism unit 141, and the third vertex is the intersection point 141e of the second side 141b of the first prism unit 141 after the edge 131a extends along the normal direction Z. Therefore, triangle T1 has a first side T1a (from edge 141d to intersection point 141e) and a second side T1b (from intersection point 141e to edge 131a) that are perpendicular to each other, and a hypotenuse T1c (from edge 131a to edge 141d). The first side T1a is the base of triangle T1, and the second side T1b is the height of triangle T1. Here, by designing an upper limit for the first included angle θ0, the width of the first prism unit 141 can be designed to have an upper limit. According to the trigonometric functions of triangle T1, the following equation (5) can be obtained, that is, the first included angle θ0 satisfies the following equation:

[0048] θ0 ≤ arctan [(W gap / 2 – Wlens / 2) / H PLN1 Equation (5)

[0049] Among them, W gap This represents the distance between two adjacent light-emitting units (such as the first light-emitting unit 121 and the second light-emitting unit 122). This distance can be defined as the distance between the center of the first light-emitting unit 121 and the center of the adjacent second light-emitting unit 122. W lens H represents the width of the first lens unit 131. PLN1 This indicates the thickness (or height) of the first interlayer 15. For ease of labeling, in... Figure 1A In the middle, the width W lens The location is indicated on the second lens unit 132. The first lens unit 131 may have the same width W. lens As described above, the lower limit of the first included angle θ0 can be obtained from equation (4), and the upper limit of the first included angle θ0 can be obtained from equation (5). Thus, the lens unit 130 and the prism unit 140 can be positioned appropriately to conform to the range of the first included angle θ0 described above. For example, an appropriate first included angle θ0 value can be selected within the range of the first included angle θ0. In some embodiments, a distance can be spaced between two adjacent prism units 140, for example, such as... Figure 1A As shown, the edge 141d of the first prism unit 141 and the first side 142a of the second prism unit 142 may be spaced apart by a distance. In some embodiments, two adjacent prism units 140 may be connected together, for example, in Figure 3A In this embodiment, the edge 141d of the first prism unit 141 and the first side 142a of the second prism unit 142 can be connected together. The above description is only an example, and the present invention is not limited thereto.

[0050] We can assume that the first intermediary layer 15 is air (i.e., n) PLN1 Simulations were performed under the condition that θ = 1.0. Based on the design and simulation results of this invention, the half-decay angle θ... FWHM The range can be, for example, equal to the width of the light-emitting unit (such as the first light-emitting unit 121), that is, triangle T2 can be defined as follows, with its vertex angle being the half-decay angle θ. FWHM Its height is the total thickness (or total height) of the color filter units (e.g., the first color filter unit 171, the second color filter unit 172, and / or the third color filter unit 173) and the second interposer layer 16, and its bottom edge is half the width of the light-emitting unit (e.g., the first light-emitting unit 121). In other words, as... Figure 1A As shown, triangle T2 has three vertices, one of which corresponds to a center point 121a of the first light-emitting unit 121, and another vertex corresponds to the half-fading angle θ. FWHMThe light rays strike the intersection point 171a of the upper surface of the first color filter unit 171, and another vertex, the center point 121a, extends along the normal direction Z and intersects the upper surface of the first color filter unit 171 at point 171b. Therefore, triangle T2 has a first side T2a (from intersection point 171a to intersection point 171b) and a second side T2b (from intersection point 171b to center point 121a), which are perpendicular to each other, and a hypotenuse T2c (from center point 121a to intersection point 171a). The first side T2a is the base of triangle T2, and the second side T2b is the height of triangle T2. Here, based on the half-decay angle θ mentioned above for the tangent function... FWHM Alternatively, it can be defined as follows (6):

[0051] θ FWHM = arctan [W LED / 2 / (H CF + H PLN2 Equation (6)

[0052] Among them, W LED H represents the width of the first light-emitting unit 121. CF H represents the thickness (or height) of the color filter unit 170 (e.g., the first color filter unit 171, the second color filter unit 172, and / or the third color filter unit 173). PLN2 This indicates the thickness (or height) of the second interposer layer 16. In practice, since the first light-emitting unit 121 can be a commercially available or any pre-manufactured component, its width (W) is... LED The angle θ can be known, and its half-decay angle θ FWHM The parameters can be known or calculable, so the known parameters can be substituted into the above equation (6) to calculate the thickness or height (H) of the applicable color filter unit 170. CF The thickness or height (H) of the second interlayer 16 and / or the second interlayer 16 PLN2 Furthermore, the color filter unit 170 and / or the second interposer layer 16 in the display device 10 of this embodiment can be designed and manufactured based on the calculated thickness or height dimensions. According to some embodiments, the half-fading angle θ obtained by equation (6) can be... FWHM Substituting into equation (4), the lower limit of the first included angle θ0 can be calculated, and the refractive index n of the first intermediate layer 15 can be obtained from this. PLN1 The range is then used to select a suitable material for forming the first intermediary layer 15.

[0053] Furthermore, according to the design of this invention, the first included angle θ0 can be obtained directly by calculation without measurement. For example... Figure 1AAs shown, in triangle T1, its base can be defined as the width of the portion of the prism unit (such as the first prism unit 141) that extends beyond the corresponding lens unit (such as the first lens unit 131). That is, the first side T1a can be half the width of the prism unit (such as the first prism unit 141) minus half the width of the first lens unit 131 (W). prism / 2–W lens / 2), therefore the aforementioned first included angle θ0 can also be redefined as follows (7):

[0054] θ0 = arctan [(W prism / 2 – W lens / 2) / H PLN1 Equation (7)

[0055] Among them, W prism W represents the width of a prism unit (such as the first prism unit 141). lens H represents the width of a lens unit (such as the first lens unit 131). PLN1 This represents the thickness (or height) of the first interlayer 15. Here, the range of the first included angle θ0 can be obtained using equations (4) and (5) above. Then, a specific θ0 value can be selected from this range and substituted into equation (7) above to further calculate the appropriate W. prism W lens and H PLN1 The values ​​of equal width and / or height (or thickness) can be applied to the process design when manufacturing the display device 10.

[0056] In summary, considering the effective configuration of one or more light-emitting units 120, one or more lens units 130, one or more prism units 140, and the first interposer layer 15, and under the premise of effectively improving brightness and light extraction efficiency, the present invention can use the aforementioned equations (4) and (5) to define the range of the first included angle θ0. It should be noted that the above description is only an example and is not intended to limit the present invention, and the scope of the present invention is not limited thereto.

[0057] like Figure 1D As shown, the following explanation explains the design that causes the light emission angle of the light-emitting unit to shift, that is, the design of the shift angle (second angle θ2) of the light emission L2. Please also refer to the following: Figure 1A and 1D ,in Figure 1D for Figure 1A The diagram shows a simplified representation of the display device 10 in which light sequentially passes through the first interposer layer 15, the first prism unit 141, and the second substrate 18. Figure 1A and 1DAs shown, an incident light L1 emitted by the first light-emitting unit 121 passes through at least the first lens unit 131, the first intermediate layer 15, and the first prism unit 141 before being emitted from the display device 10 as an outgoing light L2 into an environment. In a cross-sectional view of the display device 10, as shown... Figure 1D As shown, the first prism unit 141 has a first side 141a, a second side 141b, and a hypotenuse 141c. The first side 141a is parallel to the normal direction Z of the first substrate 11. The second side 141b connects to the first side 141a to form a right angle, and the first side 141a connects to the hypotenuse 141c to form a first angle, wherein the angle of the first angle is θ1. Additionally, as... Figure 1D As shown, in this embodiment, the inclined side 141c is adjacent to the first interposer layer 15, that is, compared to the second side 141b, the inclined side 141c is closer to the first interposer layer 15. The angle between the emitted light L2 incident on the environment and the normal direction Z of the first substrate 11 is a second angle θ2. Figure 1D As shown and Snell's Law, the following relationship can be obtained:

[0058] θ3 = 90 – θ1 (Equation 8)

[0059] θ4 = arcsin[sin(θ3) * n] PLN1 / n prism Equation (9)

[0060] θ5 = θ3 – θ4 Equation (10)

[0061] n prism * sin(θ5) = n sub2 * sin(θ6) = n output * sin(θ2) Equation (11)

[0062] θ2 = arcsin[sin(θ5) * n] prism / n output Equation (12)

[0063] Equation (12) is derived from equation (11), where θ1 is the angle of the first angle, θ3 is the angle of incidence of the light ray entering the hypotenuse 141c, θ4 is the angle of refraction of the light ray after passing through the hypotenuse 141c, θ5 is the angle of incidence of the light ray entering the second side 141b, θ6 is the angle of refraction of the light ray after passing through the second side 141b, and n PLN1 n is the refractive index of the first interlayer 15. prism Let n be the refractive index of the first prism unit 141. sub2 n is the refractive index of the second substrate 18. output Let θ be the refractive index of the environment, and θ2 be the angle of the second angle.

[0064] Therefore, by substituting equations (8) and (9) into equation (10) and then substituting the obtained θ5 into equation (12), the angle θ2 of the second angle can be rearranged as follows (13):

[0065] θ2=arcsin[sin(90-θ1-arcsin[sin(90-θ1)*n PLN1 / n prism ])*n prism / n output ]

[0066] Equation (13)

[0067] If this environment is air, n output If the value is 1.0, then the angle θ2 of the second angle can be simplified to the following equation (14):

[0068] θ2 = arcsin [sin(90 - θ1 - arcsin[sin(90 - θ1)*n PLN1 / n prism ])*n prism Equation (14)

[0069] Furthermore, if we consider that the angle θ2 of the second angle can have an error range of plus or minus 10 degrees, then the above equation (14) can be rewritten as the following equation (15):

[0070] θ2=arcsin[sin(90-θ1-arcsin[sin(90-θ1)*n PLN1 / n prism ])*n prism ±10 (15)

[0072] Furthermore, in this embodiment, the thickness of the first interposer layer 15 can be defined as greater than or equal to the sum of the thicknesses of the first prism unit 141 and the first lens unit 131, i.e., H. PLN1 ≥H prism +H lens , where H PLN1 H represents the thickness (or height) of the first interposer layer 15. prism H represents the thickness (or height) of the first prism unit 141. lens This indicates the thickness (or height) of the first lens unit 131.

[0073] In summary, such as Figure 1DAs shown, considering that the light emitted L2 of the display device 10 can have a desired offset angle (i.e., the second angle θ2), the present invention can use the aforementioned equations (13) to (15) to define the range of the first angle θ1. In other words, when a desired offset angle (i.e., the second angle θ2) is desired, the angle between the hypotenuse 141c of the first prism unit 141 and the normal direction Z can be designed to be the first angle θ1, that is, the tilt of the hypotenuse 141c of the first prism unit 141 can be designed. When designing the internal structure of the display device 10, it can be designed and manufactured according to the aforementioned equations (13) to (15). For example, the angle of the first angle (θ1, that is, the shape and size of the first prism unit 141 can be defined) and the refractive index (n) of the first prism unit 141 can be defined according to the aforementioned equations (13) to (15). prism That is, the material of the first prism unit 141 and the refractive index (n) of the first interlayer 15 can be defined. PLN1 That is, the material of the first intermediary layer 15 can be defined, etc.

[0074] According to some embodiments, the display device 10 can be applied in automotive displays. For example, when the display device 10 is installed in a vehicle, if a passenger in a specific position (e.g., the passenger in the front passenger seat) is not at the direct viewing angle of the display device 10, this passenger may not be able to see a clear image displayed by the display device 10. For example, according to the design of the display device 10 described above, the offset angle (second angle θ2) of the light emission L2 can be designed at the viewing angle position of the front passenger position. That is, the brightness center of the light emitted by the display device is offset (offset by the second angle θ2). In this way, the front passenger's viewing angle can be located at the brightness center of the display device 10. Even if the front passenger is not at the direct viewing angle of the display device 10, they can still see a clear image at the offset angle (second angle θ2) position of the light emission L2.

[0075] Reference Figure 1AThe display device 10 of this embodiment may further include a second substrate 18 disposed on the first prism unit 141, the second prism unit 142, and the third prism unit 143. The first prism unit 141, the second prism unit 142, and the third prism unit 143 may be disposed between the first interposer layer 15 and the second substrate 18. The second substrate 18 may be a transparent substrate, so the light emitted from the first light-emitting unit 121, the second light-emitting unit 122, and / or the third light-emitting unit 123 can pass through at least sequentially the second interposer layer 16, the corresponding color filter unit (such as the first color filter unit 171, the second color filter unit 172, and / or the third color filter unit 173), the corresponding lens unit (such as the first lens unit 131, the second lens unit 132, and / or the third lens unit 133), the first interposer layer 15, and the corresponding prism unit (such as the first prism unit 141, the second prism unit 142, and / or the third prism unit 143), and finally exit through the second substrate 18. It should be noted that the second substrate 18 can be any light-transmitting material, and it can be, for example, but not limited to, the same material as the aforementioned first lens unit 131, second lens unit 132, third lens unit 133, first prism unit 141, second prism unit 142, third prism unit 143, first interposer 15 and second interposer 16, which will not be elaborated here.

[0076] Reference Figure 1AIn this embodiment, the first prism unit 141, the second prism unit 142, and the third prism unit 143 can be manufactured using any suitable method. In one embodiment, a second interposer layer 16, a plurality of color filter units (including a first color filter unit 171, a second color filter unit 172, and a third color filter unit 173), a plurality of lens units (including a first lens unit 131, a second lens unit 132, and a third lens unit 133), and a first interposer layer 15 can be sequentially formed on a first substrate 11. Then, grooves 140A corresponding to the shapes of the plurality of prism units (including the first prism unit 141, the second prism unit 142, and the third prism unit 143) are formed on the first interposer layer 15 by, for example, imprinting. Then, materials corresponding to the first prism unit 141, the second prism unit 142, and the third prism unit 143 are filled into the grooves 140A to form the desired first prism unit 141, the second prism unit 142, and the third prism unit 143. Alternatively, in one embodiment, the first prism unit 141, the second prism unit 142, and the third prism unit 143 can be formed on the second substrate 18, for example, using a photolithography process or an imprinting process. Then, the second substrate 18 on which the first prism unit 141, the second prism unit 142, and the third prism unit 143 are formed is directly laminated onto the first interposer layer 15. In this case, one side of the second substrate 18 on which the first prism unit 141, the second prism unit 142, and the third prism unit 143 are formed can be directly laminated onto the first interposer layer 15, thereby forming the structure of the display device 10. It should be noted that the above description is merely illustrative and not restrictive, and the present invention is not limited thereto.

[0077] Please refer to Figure 2A and 2B The display device 10a according to the second embodiment of the present invention is described, wherein Figure 2A This is a partial cross-sectional schematic diagram of the display device 10a according to the second embodiment of the present invention. Figure 2B for Figure 2A The simplified schematic diagram of the display device 10a shown illustrates the sequential passage of light through the first interposer layer 15, prism units (e.g., including the first prism unit 141, the second prism unit 142, and the third prism unit 143), and the second substrate 18. It should be noted that in this embodiment, since the medium on both sides of the second substrate 18 is air, according to Snell's law, Figure 2B The second substrate 18 can be omitted in the simplified schematic diagram.

[0078] like Figure 2A and 2BAs shown, the display device 10a of this embodiment has a component composition and connection relationship of each component that is generally the same as the display device 10 of the previous embodiment. The difference is that the inclined side 141c of the prism unit (e.g., including the first prism unit 141, the second prism unit 142, and the third prism unit 143, etc.) of the display device 10a is far away from the first interposer layer 15. That is, compared with the second side 141b, the inclined side 141c is farther away from the first interposer layer 15. A space 140S is formed between the prism unit (e.g., including the first prism unit 141, the second prism unit 142, or the third prism unit 143) and the second substrate 18, which can be filled with air, for example.

[0079] In this embodiment, the prism units (e.g., including the first prism unit 141, the second prism unit 142, and the third prism unit 143, etc.) can be manufactured using any suitable method. In one embodiment, light-emitting units (e.g., including a first light-emitting unit 121, a second light-emitting unit 122, and a third light-emitting unit 123), a second interposer layer 16, color filter units (e.g., including a first color filter unit 171, a second color filter unit 172, and a third color filter unit 173), lens units (e.g., including a first lens unit 131, a second lens unit 132, and a third lens unit 133), and a first interposer layer 15 can be sequentially formed on a first interposer layer 11. Then, prism units (e.g., including a first prism unit 141, a second prism unit 142, and a third prism unit 143) can be formed on the first interposer layer 15 using, for example, a molding and / or photolithography process. Finally, a second substrate 18 is disposed on the prism units (e.g., including a first prism unit 141, a second prism unit 142, and a third prism unit 143). Alternatively, in one embodiment, prism units (e.g., including a first prism unit 141, a second prism unit 142, and a third prism unit 143) can be directly defined on the upper surface of the first interposer 15 by imprinting. In this case, the first interposer 15 and the prism units (e.g., including a first prism unit 141, a second prism unit 142, and a third prism unit 143) can be composed of the same material layer. Then, the second substrate 18 is disposed on the prism units (e.g., including a first prism unit 141, a second prism unit 142, and a third prism unit 143), thereby forming the structure of the display device 10a. It should be noted that the above description is merely illustrative and not restrictive, and the present invention is not limited thereto.

[0080] In this embodiment, based on Figure 2B As shown and Snell's Law, the following relationship can be obtained:

[0081] θ3 = 90 – θ1 (Equation 16)

[0082] θ4 = arcsin[sin(θ3) * n]prism / n output Equation (17)

[0083] θ2 = θ4 – θ3 (Equation 18)

[0084] Where θ1 is the angle of the first angle, θ3 is the angle of incidence of the light ray entering the hypotenuse 141c, θ4 is the angle of refraction of the light ray after passing through the hypotenuse 141c, and n output The refractive index of the environment (air) and, in this embodiment, the refractive index of the air filling the space between the first prism unit 141 and the second substrate 18, n prism θ1 is the refractive index of the first prism unit 141, and θ2 is the angle of the second prism.

[0085] Therefore, substituting equations (16) and (17) into equation (18), the angle θ2 of the second angle can be simplified to the following equation (19):

[0086] θ2 = arcsin [sin(90 - θ1)*n prism / n output Equation (19) - (90 - θ1)

[0087] If this environment is air, n output If the value is 1.0, then the angle θ2 of the second angle can be simplified to the following equation (20):

[0088] θ2 = arcsin [sin(90 - θ1)*n prism Equation (20) - (90 - θ1)

[0089] Furthermore, if we consider that the angle θ2 of the second angle can have an error range of plus or minus 10 degrees, then the above equation (20) can be rewritten as the following equation (21):

[0090] θ2 = arcsin [sin(90 - θ1)*n prism Equation (21) - (90 - θ1) ± 10

[0091] Furthermore, in this embodiment, the thickness of the first interposer layer 15 can be defined as greater than or equal to the thickness of the first prism unit 141, i.e., H. PLN1 ≥H lens , where H PLN1 H represents the thickness (or height) of the first interposer layer 15. lens This indicates the thickness (or height) of the first lens unit 131.

[0092] In summary, considering that the light emitted L2 of the display device 10a can have the expected offset angle (i.e., the angle θ2 of the second angle), the present invention can use the aforementioned equations (19) to (21) to define the range of the angle θ1 of the first angle. In other words, when designing the internal structure of the display device 10a, it can be designed and manufactured according to the aforementioned equations (19) to (21). For example, the first angle θ1 (i.e., the shape and size of the first prism unit 141) and the refractive index (n) of the first prism unit 141 can be defined according to the aforementioned equations (19) to (21). prism That is, the material of the first prism unit 141 and the refractive index (n) of the first interlayer 15 can be defined. PLN1 That is, the material of the first intermediary layer 15 can be defined, etc.

[0093] Please refer to Figure 3A and 3B The display device 10b according to the third embodiment of the present invention is described, wherein... Figure 3A This is a partial cross-sectional schematic diagram of the display device 10b according to the third embodiment of the present invention. Figure 3B for Figure 3A The diagram shows a simplified representation of the display device 10b in which light sequentially passes through a first interposer layer 15, prism units (e.g., including a first prism unit 141, a second prism unit 142, and a third prism unit 143, etc.) and a second substrate 18.

[0094] like Figure 3A and 3B As shown, the display device 10b of this embodiment has a component composition and connection relationship of roughly the same as the display device 10 of the aforementioned embodiment. The difference lies in that the display device 10b includes a prism section 340, which includes a prism layer 340A and multiple prism units (e.g., including a first prism unit 141, a second prism unit 142, and a third prism unit 143). The prism layer 340A and the multiple prism units are continuous. For example, the prism layer 340A and the multiple prism units are made of the same material and can be integrally formed. The multiple prism units 140 are disposed between the first intermediate layer 15 and the prism layer 340A. For ease of explanation, Figure 3AA prism section 340 is shown in the figure. According to some embodiments, the display device includes a prism section 340. According to some embodiments, although not shown, the display device may include multiple prism sections 340, which may include a first prism section and a second prism section. The first prism section may include a first prism layer and a first portion of a plurality of prism units, wherein the first prism layer and the prism units of the first portion are continuous. The second prism section may include a second prism layer and a second portion of a plurality of prism units, wherein the second prism layer and the prism units of the second portion are continuous. The arrangement of the prism sections is not limited. Although the arrangement direction of the prism sections is not shown in the figure, for example, such as... Figure 7 As shown, the arrangement direction of the prisms can be the X-direction. For example, a display device includes multiple prisms arranged in the X-direction. One prism can be configured to correspond to a row of pixel areas P (or light-emitting units), that is, one prism can overlap a row of pixel areas P (or light-emitting units). For example, one prism can be configured to correspond to a row of pixel areas P in column R3, and another prism can be configured to correspond to another row of pixel areas P in column R4. The prisms in column R3 and the other prism in column R4 can be separate, and so on. For example, as... Figure 7 As shown, the arrangement direction of the prisms can be the Y direction. For example, a display device includes multiple prisms arranged in the Y direction. One prism can be configured to correspond to a row of pixel areas P (or light-emitting units), that is, one prism can overlap a row of pixel areas P (or light-emitting units). For example, one prism can be configured to correspond to the pixel area P of row C3, and another prism can be configured to correspond to the pixel area P of another row C4. The prism in row C3 and the other prism in row C4 can be separate, and so on. Although not shown in the figure, according to some embodiments, one prism can also overlap a pixel area P composed of multiple columns and multiple rows. The direction of the column is the X direction, and the direction of the row is the Y direction.

[0095] In this embodiment, the prism portion 340 can be manufactured using any suitable method. In one embodiment, light-emitting units (e.g., including a first light-emitting unit 121, a second light-emitting unit 122, and a third light-emitting unit 123), a second interposer layer 16, color filter units (e.g., including a first color filter unit 171, a second color filter unit 172, and a third color filter unit 173), lens units (e.g., including a first lens unit 131, a second lens unit 132, and a third lens unit 133), and a first interposer layer 15 can be sequentially formed on a first substrate 11. Alternatively, the prism units can be formed directly on one surface of a transparent plate (e.g., a glass plate). For example, the prism units (e.g., including a first prism unit 141, a second prism unit 142, and a third prism unit 143) can be directly defined on one surface of the transparent substrate by laser etching to form the prism portion 340. Then, one side of the prism portion 340 is directly pressed onto the first interposer layer 15 to form the structure of the display device 10b. It should be noted that the above description is illustrative only and not restrictive, and the present invention is not limited thereto.

[0096] Additionally, please refer to Figure 4 The display device 10c according to the fourth embodiment of the present invention is described, wherein... Figure 4 This is a partial cross-sectional schematic diagram of the display device 10c according to the fourth embodiment of the present invention.

[0097] like Figure 4 As shown, the display device 10c of this embodiment differs from that of the aforementioned embodiments. Figure 2A The component composition and connection relationships of the display device 10a are largely the same. The difference lies in that the display device 10c further includes a third substrate 19, disposed between the first interposer 15 and the prism units (e.g., including the first prism unit 141, the second prism unit 142, the third prism unit 143, etc.). The material of the third substrate 19 can be any suitable transparent material, which can be, for example, but not limited to, the same material as the second substrate 18, and will not be described in detail here.

[0098] In one embodiment, the third substrate 19 may be, for example, a transparent substrate (e.g., a glass substrate) with a refractive index, for example, but not limited to, between 1.4 and 1.8. In another embodiment, light-emitting units (e.g., including a first light-emitting unit 121, a second light-emitting unit 122, a third light-emitting unit 123, etc.), a second interposer layer 16, color filter units (e.g., including a first color filter unit 171, a second color filter unit 172, a third color filter unit 173, etc.), lens units (e.g., including a first lens unit 131, a second lens unit 132, a third lens unit 133, etc.), and a first interposer layer 15 may be sequentially formed on the first substrate 11. Additionally, a prism unit may be formed on one surface of the third substrate 19 using, for example, a molding and / or photolithography process. The device 10c is formed by placing a third substrate 19, a second substrate 18 on a first interposer 15, and then placing the third substrate 19, the prism units (e.g., including a first prism unit 141, a second prism unit 142, a third prism unit 143, etc.) on the first interposer 15. The other surface of the third substrate 19 is directly disposed on the first interposer 15. It should be noted that the above description is illustrative and not restrictive, and the invention is not limited thereto.

[0099] like Figure 4 As shown, according to some embodiments, the third substrate 19 can be replaced by a prism layer 440A. Thus, the prism layer 440A and the plurality of prism units (e.g., including a first prism unit 141, a second prism unit 142, and a third prism unit 143, etc.) can be continuous. In one embodiment, for example, the prism layer 440A and the plurality of prism units are made of the same material and can be integrally formed. In one embodiment, the plurality of prism units 140 are disposed between the prism layer 440A and the second substrate 18. It should be noted that the above description is merely illustrative and not restrictive, and this disclosure is not limited thereto.

[0100] In summary, the display device 10c of this embodiment can use the aforementioned equations (19) to (21) to define the range of the first angle θ1. In other words, when designing the internal structure of the display device 10c, it can be designed and manufactured according to the aforementioned equations (19) to (21). For example, the angle of the first angle (θ1, that is, the shape and size of the first prism unit 141) and the refractive index (n) of the first prism unit 141 can be defined according to the aforementioned equations (19) to (21). prism That is, the material of the first prism unit 141 and the refractive index (n) of the first interlayer 15 can be defined. PLN1That is, the material of the first interposer 15 can be defined. In addition, by providing the third substrate 19, this embodiment can divide the display device 10c into two sub-structural parts and manufacture them separately. One sub-structural part includes a first substrate 11, light-emitting units (e.g., including a first light-emitting unit 121, a second light-emitting unit 122, a third light-emitting unit 123, etc.), a second interposer 16, color filter units (e.g., including a first color filter unit 171, a second color filter unit 172, a third color filter unit 173, etc.), lens units (e.g., including a first lens unit 131, a second lens unit 132, a third lens unit 133, etc.), and the first interposer 15. The other sub-structural part includes the third substrate 19, prism units (e.g., including a first prism unit 141, a second prism unit 142, a third prism unit 143, etc.) and a second substrate 18. Then, the two sub-structural parts are combined, which can effectively reduce manufacturing time and manufacturing difficulty.

[0101] Figure 5 This is a partial cross-sectional schematic diagram of different embodiments of the display device according to the fifth embodiment of the present invention. For example... Figure 5 As shown, the display device 10d of this embodiment has a component composition and connection relationship that is largely the same as the display device 10a of the aforementioned embodiment. The difference lies in that the display device 10d further includes multiple optical units 200, correspondingly disposed between the light-emitting unit 120 (e.g., including a first light-emitting unit 121, a second light-emitting unit 122, a third light-emitting unit 123, etc.) and the color filter unit 170 (e.g., including a first color filter unit 171, a second color filter unit 172, a third color filter unit 173, etc.). The optical unit 200 may include a light conversion material, a light diffusion material, or other optical materials. Additionally, as... Figure 5 The display device 10d shown includes at least three pixel areas, which are pixel area P3, pixel area P1, and pixel area P2 from left to right. Pixel area P1 is located between pixel area P2 and pixel area P3. Pixel area P1 includes at least a first light-emitting unit 121, a first optical unit 201, a first color filter unit 171, a first lens unit 131, and a first prism unit 141. Pixel area P2 may be located to the right of pixel area P1 and includes at least a second light-emitting unit 122, a second optical unit 202, a second color filter unit 172, a second lens unit 132, and a second prism unit 142. Pixel area P3 may be located to the left of pixel area P1 and includes at least a third light-emitting unit 123, a third optical unit 203, a third color filter unit 173, a third lens unit 133, and a third prism unit 143. Figure 5As shown, in this embodiment, the display device 10d includes three light-emitting units that emit light of the same color. For example, the first light-emitting unit 121, the second light-emitting unit 122, and the third light-emitting unit 123 are all blue light-emitting units, but the present invention is not limited thereto. A first optical unit 201 is disposed between the first light-emitting unit 121 and the first color filter unit 171, a second optical unit 202 is disposed between the second light-emitting unit 122 and the second color filter unit 172, and a third optical unit 203 is disposed between the third light-emitting unit 123 and the third color filter unit 173. The first optical unit 201 and the third optical unit 203 can be light conversion units, and the second optical unit 202 can be a light diffusion unit. For example, the third optical unit 203 can convert the blue light emitted by the third light-emitting unit 123 into red light, and the first optical unit 201 can convert the blue light emitted by the first light-emitting unit 121 into green light. At pixel locations P3, P1, and P2, the third color filter unit 173, the first color filter unit 171, and the second color filter unit 172 can be red, green, and blue, respectively. Thus, pixel locations P3, P1, and P2 can emit red, green, and blue light, respectively.

[0102] like Figure 5 As shown, in this embodiment, the plurality of optical units (e.g., including a first optical unit 201, a second optical unit 202, and a third optical unit 203) can be formed, for example but not limited to, using a coating process and a photolithography process respectively. For example, to form the first optical unit 201, the second optical unit 202, and the third optical unit 203, a bank material, such as an organic photoresist layer, can first be formed on the second intermediate layer 16 using a coating process. Then, this bank material layer can be patterned using, for example, a photolithography process to form a bank pattern layer 250A. The bank pattern layer 250A may have a plurality of openings 250B. Next, the materials of the first optical unit 201, the second optical unit 202, and the third optical unit 203 are sequentially disposed in the plurality of openings 250B of the bank pattern layer 250A using a coating process to form the first optical unit 201, the second optical unit 202, and the third optical unit 203. It should be noted that the above description is only an example and is not intended to limit the scope of the invention, which is not limited thereto.

[0103] like Figure 6As shown, the display device 10e of this embodiment has a component composition and connection relationship that is largely the same as the display device 10d of the aforementioned embodiment. The difference lies in that the display device 10e includes two blue light-emitting units and one green light-emitting unit. For example, the second light-emitting unit 122 and the third light-emitting unit 123 can be blue light-emitting units, and the first light-emitting unit 121 can be a green light-emitting unit. The third optical unit 203 can be a light conversion unit, and the first optical unit 201 and the second optical unit 202 can be light diffusion units. For example, the third optical unit 203 can convert the blue light emitted by the third light-emitting unit 123 into red light. At the pixel areas P3, P1, and P2, the third color filter unit 173, the first color filter unit 171, and the second color filter unit 172 can be red, green, and blue, respectively. Thus, at the pixel areas P3, P1, and P2, red light, green light, and blue light can be emitted, respectively.

[0104] Furthermore, in this embodiment, the first substrate 11 may be a substrate containing a circuit layer (not shown) electrically connected to the first light-emitting unit 121, the second light-emitting unit 122 and the third light-emitting unit 123. This circuit layer may include, for example, a microprocessor, a storage element and / or other components. The circuit layer may also include various passive and / or active components, such as thin-film resistors, capacitors (e.g., metal-insulator-metal-capacitors, MIMCAPs), inductors, diodes, metal-oxide-semiconductor field-effect transistors (MOSFETs), complementary metal-oxide-semiconductor (CMOS) transistors, bipolar junction transistors (BJTs), laterally diffused MOSFETs, high-power MOSFETs, thin-film transistors (TFTs), or other types of transistors. Additionally, the first substrate 11 may have a bonding surface, such as the upper surface of the first substrate 11. The first substrate 11 serves as a driving substrate for driving the first light-emitting unit 121, the second light-emitting unit 122, and the third light-emitting unit 123 to emit light; for example, it may be a complementary metal-oxide-semiconductor substrate, a liquid crystal on silicon (LCD) substrate, or a liquid crystal on silicon substrate. The substrate may be a silicon (LCOS) substrate, a thin-film transistor substrate, or other circuit substrate having a working circuit, and is not limited to any particular type. In some embodiments, the display device 10 is a micro LED display device suitable for AR (Augmented Reality) or VR (Virtual Reality) applications. According to some embodiments, the first substrate 11 may include a plurality of driving components (not shown). One of the plurality of driving components may be electrically connected to one of the plurality of light-emitting units 120. More specifically, for example, one of the plurality of driving components may be electrically connected to the first light-emitting unit 121. Electrodes in the driving components may be electrically connected to electrodes (not shown) in the first light-emitting unit 121.

[0105] In addition, such as Figure 1AAs shown, any one of the first light-emitting unit 121, the second light-emitting unit 122, and the third light-emitting unit 123 may include, for example, an organic light-emitting diode (OLED), a sub-millimeter light-emitting diode (mini LED), a micro light-emitting diode (micro LED), or a quantum dot LED, but the present invention is not limited thereto. In this embodiment, any one of the first light-emitting unit 121, the second light-emitting unit 122, and the third light-emitting unit 123 may be a micro light-emitting diode assembly, such as a red micro light-emitting diode assembly, a green micro light-emitting diode assembly, or a blue micro light-emitting diode assembly. Generally, any one of the first light-emitting unit 121, the second light-emitting unit 122, and the third light-emitting unit 123 may include two semiconductor layers and a light-emitting layer sandwiched between the two semiconductor layers. The semiconductor layers may be elemental semiconductors, compound semiconductors, alloy semiconductors, metal oxides, organic semiconductors, or combinations of the above materials. Elemental semiconductors include amorphous silicon (Si), polycrystalline silicon (Poly-Si), and germanium; compound semiconductors include gallium nitride (GaN), silicon carbide, gallium arsenide, gallium phosphide, indium phosphide, indium arsenide, and / or indium antimonide; alloy semiconductors include silicon-germanium alloy (SiGe), gallium arsenide-phosphorus alloy (GaAsP), aluminum-indium arsenide alloy (AlInAs), aluminum-gallium arsenide alloy (AlGaAs), gallium arsenide-indium-gallium alloy (GaInAs), gallium arsenide-indium-phosphorus alloy (GaInP), and / or gallium arsenide-indium-gallium phosphide alloy (GaInAsP); metal oxides include indium gallium zinc oxide (IGZO), indium zinc oxide (IZO), and indium gallium tin zinc oxide (IGZTO); organic semiconductors include polycyclic aromatic compounds; and combinations of the above materials are also possible. It should be noted that the above materials are merely examples and are not intended to limit the scope of the present invention.

[0106] The light-emitting layer may comprise a homojunction, a heterojunction, a single-quantum well (SQW), a multiple-quantum well (MQW), or other similar structures. In some embodiments, the light-emitting layer may comprise undoped n-type In. x Ga (1-x) N, Al xIn y Ga (1-x-y) N, or any other suitable material. Additionally, the luminescent layer can be a multiple quantum well structure comprising alternating layers of multiple wells (e.g., InGaN) and barrier layers (e.g., GaN). Furthermore, the luminescent layer can be formed using metal-organic chemical vapor deposition (MOCVD), molecular beam epitaxy (MBE), hydride vapor phase epitaxy (HVPE), liquid phase epitaxy (LPE), or other suitable chemical vapor deposition methods.

[0107] In this embodiment, the structure of any one of the first lens unit 131, the second lens unit 132, and the third lens unit 133 may, for example, include a plane and a convex surface, such as... Figure 1AAs shown, the structure of any one of the first lens unit 131, the second lens unit 132, and the third lens unit 133 may be semi-ellipsoidal. In other embodiments, the structure of any one of the first lens unit 131, the second lens unit 132, and the third lens unit 133 may also be hemispherical, semi-oval, or other single component having a plane and a convex surface. In other embodiments, the structure of any one of the first lens unit 131, the second lens unit 132, and the third lens unit 133 may also be a polygonal structure or a composite structure; for example, a composite structure may include, for example, a hemisphere and a cylinder located below the plane of the hemisphere; additionally, a composite structure may be composed of a quarter-sphere and a quarter-ellipsoid. In some embodiments, the material of any one of the first lens unit 131, the second lens unit 132, and the third lens unit 133 may include, for example, inorganic or organic materials; for example, the material of any one of the first lens unit 131, the second lens unit 132, and the third lens unit 133 may be, for example, silicon oxide. In some embodiments, inorganic materials include, for example, silicon oxide, silicon nitride, silicon carbide, titanium oxide, zirconium oxide, alumina, phosphosilicate glass (PSG), or borosilicate glass, or any combination thereof. In some embodiments, organic materials include, for example, polymers such as SU-8, PermiNex, benzocyclobutene (BCB), or transparent resins including spin-coated glass (SOG), or transparent adhesive materials, or any combination thereof. This invention is not limited. In some embodiments, any one of the first lens unit 131, the second lens unit 132, and the third lens unit 133, composed of inorganic or organic materials, can be formed by patterning the corresponding inorganic or organic material layer using, for example, a photolithography process. It should be noted that the above description is illustrative and not restrictive, and the invention is not limited thereto. In one embodiment, the refractive index n of any one of the first lens unit 131, the second lens unit 132, and the third lens unit 133 is... lens It can be, for example, but not limited to, between 1.5 and 2.0, that is, 2.0 ≥ n lens ≥1.5. It should be noted that the above description is illustrative only and not restrictive, and the present invention is not limited thereto.

[0108] In this embodiment, any one of the first prism unit 141, the second prism unit 142, and the third prism unit 143 may be made of a transparent material, such as, but not limited to, silicon oxide, silicon nitride, silicon carbide, titanium oxide, zirconium oxide, or aluminum oxide, or any combination thereof. In some embodiments, any one of the first prism unit 141, the second prism unit 142, and the third prism unit 143 may also be made of, for example, optically transparent adhesive (OCA), optically transparent resin (OCR), or other suitable transparent adhesive materials (such as photoresist materials), and the invention is not limited thereto. In some embodiments, the material of any one of the first prism unit 141, the second prism unit 142, and the third prism unit 143 may be the same as or different from the material of any one of the first lens unit 131, the second lens unit 132, and the third lens unit 133, and the invention is not limited thereto. In one embodiment, the refractive index n of any one of the first prism unit 141, the second prism unit 142, and the third prism unit 143 is... prism It can be, for example, but not limited to, between 1.5 and 2.0, that is, 2.0 ≥ n prism ≥1.5. It should be noted that the above description is illustrative only and not restrictive, and the present invention is not limited thereto.

[0109] It is particularly important to note that, in order for light to be deflected after passing through the first prism unit 141, the second prism unit 142, or the third prism unit 143, the first interposer layer 15 and the plurality of prism units (including the first prism unit 141, the second prism unit 142, and the third prism unit 143) can be designed to have different refractive indices. In one embodiment, the refractive index n of the first interposer layer 15 is... PLN1 It can be, for example, but not limited to, between 1.0 and 1.6, that is, 1.6 ≥ n. PLN1 ≥1.0; additionally, the refractive index n of the second interlayer 16 PLN2 Alternatively, it can be, for example but not limited to, between 1.0 and 1.6, that is, 1.6 ≥ n PLN2 ≥1.0. It should be noted that the above description is illustrative only and not restrictive, and the present invention is not limited thereto.

[0110] In summary, according to some embodiments, a first intermediate layer is disposed between the lens unit and the prism unit. By adjusting the positions of the lens unit and the prism unit, and appropriately designing the refractive index and thickness of the first intermediate layer, the light emission center of the display device can be shifted. According to some embodiments, by adjusting the angle of the hypotenuse of the prism unit (first angle θ1) and the refractive index n of the first intermediate layer... PLN1 and / or the refractive index n of the prism unit prism With proper design, the light emitted by the display device can be offset at the expected angle (second angle θ2).

[0111] Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some modifications and improvements without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the present invention shall be defined by the claims.

Claims

1. A display device, comprising: First substrate; A first light-emitting unit is disposed on the first substrate; A first lens unit is disposed on the first light-emitting unit; A first prism unit is disposed on the first lens unit; A first intermediate layer is disposed between the first lens unit and the first prism unit; and A second intermediary layer is disposed between the first light-emitting unit and the first lens unit.

2. The display device as described in claim 1, characterized in that, Also includes: A first color filter unit is disposed between the first light-emitting unit and the first lens unit, wherein the second intermediate layer is disposed between the first light-emitting unit and the first color filter unit.

3. The display device as described in claim 2, characterized in that, Also includes: A first optical unit is disposed between the first light-emitting unit and the first color filter unit.

4. The display device as claimed in claim 1, characterized in that, In a cross-sectional view of the display device, an edge of the first lens unit and an edge of the opposite first prism unit form a first angle θ0 with respect to a normal direction of the first substrate. The first angle θ0 conforms to the following formula: θ0≥arcsin[sin(θ FWHM ) / n PLN1 ] Where, θ FWHM n is half the attenuation angle of the first optical unit. PLN1 Let be the refractive index of the first intermediate layer.

5. The display device as described in claim 4, characterized in that, Also includes: A second light-emitting unit is disposed on the first substrate and adjacent to the first light-emitting unit; A second lens unit is disposed opposite to the second light-emitting unit; and A second prism unit is disposed opposite to the second lens unit; The first intermediate layer is further disposed between the second lens unit and the second prism unit, and the second intermediate layer is further disposed between the second light-emitting unit and the second lens unit. In this cross-sectional view, the first included angle θ0 satisfies the following formula: θ0≤arctan[(W gap / 2–W lens / 2) / H PLN1 ] Among them, W gap W is the distance between the first light-emitting unit and the second light-emitting unit. lens H is the width of the first lens unit. PLN1 The thickness of the first intermediary layer.

6. The display device as claimed in claim 5, characterized in that, Also includes: A first color filter unit is disposed between the first light-emitting unit and the first lens unit, wherein the second intermediary layer is disposed between the first light-emitting unit and the first color filter unit; and A second color filter unit is disposed between the second light-emitting unit and the second lens unit, wherein the second intermediate layer is further disposed between the second light-emitting unit and the second color filter unit.

7. The display device as claimed in claim 6, characterized in that, Also includes: A first optical unit is disposed between the first light-emitting unit and the first color filter unit; and A second optical unit is disposed between the second light-emitting unit and the second color filter unit. The first light-emitting unit and the second light-emitting unit emit the same color, wherein the first optical unit is a light conversion unit and the second optical unit is a light diffusion unit.

8. The display device as claimed in claim 1, characterized in that, An incident light emitted by the first light-emitting unit passes through at least the first lens unit, the first intermediate layer, and the first prism unit and is emitted by the display device into an environment; In a cross-sectional view of the display device, the first prism unit has a first side, a second side, and a hypotenuse. The first side is parallel to a normal direction of the first substrate. The second side connects to the first side to form a right angle. The first side connects to the hypotenuse to form a first angle. The angle between the emitted light and the normal direction of the first substrate is a second angle. The hypotenuse is adjacent to the first interposer layer. The first angle and the second angle conform to the following formula: θ2=arcsin[sin(90-θ1-arcsin[sin(90-θ1)*n PLN1 / n prism ])*n prism / n output ]±10 Where, n PLN1 Let n be the refractive index of the first intermediate layer. prism Let n be the refractive index of the first prism unit. output The refractive index of this environment.

9. The display device as claimed in claim 1, characterized in that, An incident light emitted by the first light-emitting unit passes through at least the first lens unit, the first intermediate layer, and the first prism unit and is emitted by the display device into an environment; In a cross-sectional view of the display device, the first prism unit has a first side, a second side, and a hypotenuse. The first side is parallel to a normal direction of the first substrate. The second side connects to the first side to form a right angle. The first side connects to the hypotenuse to form a first angle. The angle between the emitted light and the normal direction of the first substrate is a second angle. The hypotenuse is away from the first interposer layer. The first angle and the second angle conform to the following formula: θ2=arcsin[sin(90-θ1)*n prism / n output ]-(90-θ1)±10 Where, n prism Let n be the refractive index of the first prism unit. output The refractive index of this environment.

10. The display device as claimed in claim 1, characterized in that, In a cross-sectional view of the display device, the first prism unit has a first side, a second side, and a bevel. The first side is parallel to a normal direction of the first substrate, and the second side connects to the first side to form a right angle. Compared to the second side, the bevel is closer to the first interposer layer.

11. The display device as claimed in claim 10, characterized in that, Also includes: A second substrate, wherein the first prism unit is disposed between the first interposer layer and the second substrate.

12. The display device as claimed in claim 10, characterized in that, Also includes: A prism section includes a prism layer and a plurality of prism units, wherein the prism layer and the plurality of prism units are continuous, and wherein the plurality of prism units includes the first prism unit. The plurality of prism units are disposed between the first intermediate layer and the prism layer.

13. The display device as claimed in claim 1, characterized in that, In a cross-sectional view of the display device, the first prism unit has a first side, a second side, and a hypotenuse. The first side is parallel to a normal direction of the first substrate, and the second side connects to the first side to form a right angle. Compared to the second side, the hypotenuse is farther away from the first interposer layer.

14. The display device as claimed in claim 13, characterized in that, Also includes: A third substrate is disposed between the first interposer layer and the first prism unit.

15. The display device as claimed in claim 13, characterized in that, Also includes: A prism section includes a prism layer and a plurality of prism units, wherein the prism layer and the plurality of prism units are continuous, and the plurality of prism units include the first prism unit.

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