A silicon-based micro display panel and a silicon-based micro display

Abstract

The embodiment of the present application discloses a silicon-based micro display panel and a silicon-based micro display. The silicon-based micro display panel comprises a silicon-based driving panel, an organic light emitting array and a microlens layer. The organic light emitting array is formed on the silicon-based driving panel, the organic light emitting array comprises a plurality of organic light emitting units, and the silicon-based driving panel is used for driving the organic light emitting units to emit light; the microlens layer is located on the side of the organic light emitting array away from the silicon-based driving panel, the microlens layer comprises a plurality of microlenses, and the microlenses are located on the light emitting side of the organic light emitting units one by one. The embodiment of the present application adjusts the structure of the microlenses, so that the side view angle gain of different organic light emitting units is the same under the same at least part of the side view angle, so that the white light color coordinates formed by the color matching of different organic light emitting units under the side view angle are the same as the white light color coordinates formed by the color matching under the normal view angle, the light emitting efficiency of different organic light emitting units under the side view angle is balanced, and the color deviation problem of the silicon-based micro display panel under the side view angle is improved.

Description

Technical Field

[0001] The present invention relates to the field of display panel technology, and more particularly to a silicon-based microdisplay panel and a silicon-based microdisplay. Background Technology

[0002] Silicon-based microdisplay panels refer to miniaturized display units with micro-screen size and high resolution, offering advantages such as fast response time, low power consumption, and small size. Typically, a microlens array with circular lenses is placed on the emitting side of the organic light-emitting layer to improve the light extraction efficiency of the organic light-emitting units. However, while the light extraction efficiency is high at the frontal viewing angle of the microlens, as the viewing angle moves away from the frontal angle, at the side viewing angle, it becomes apparent that the white light color coordinates formed by different organic light-emitting units in the side viewing direction differ from those formed in the frontal viewing direction. This results in severe color shift in silicon-based display panels at the side viewing angle. Summary of the Invention

[0003] This invention provides a silicon-based microdisplay panel and a silicon-based microdisplay that can balance the light emission efficiency of different organic light-emitting units at a side viewing angle and improve the color shift problem of the silicon-based microdisplay panel at a side viewing angle.

[0004] In a first aspect, embodiments of the present invention provide a silicon-based microdisplay panel, comprising:

[0005] Silicon-based driver panel;

[0006] An organic light-emitting array is formed on the silicon-based driving panel. The organic light-emitting array includes a plurality of organic light-emitting units. The silicon-based driving panel is used to drive the organic light-emitting units to emit light.

[0007] A microlens layer is located on the side of the organic light-emitting array away from the silicon-based driving panel. The microlens layer includes a plurality of microlenses, each of which is located on the light-emitting side of the organic light-emitting unit.

[0008] The plurality of organic light-emitting units include a first organic light-emitting unit and a second organic light-emitting unit, wherein the first organic light-emitting unit and the second organic light-emitting unit emit different colors; the plurality of microlenses include a first microlens and a second microlens, wherein the first microlens is located on the light-emitting side of the first organic light-emitting unit and the second microlens is located on the light-emitting side of the second organic light-emitting unit.

[0009] Wherein, in the same at least part of the side viewing angle direction, the spectral intensity of the first organic light-emitting unit is greater than the spectral intensity of the second organic light-emitting unit, and the optical power of the first microlens is greater than the optical power of the second microlens.

[0010] Optionally, the first microlens and the second microlens have the same volume.

[0011] Optionally, the bottom area of ​​the first microlens is smaller than the bottom area of ​​the second microlens, and the thickness of the first microlens is greater than the thickness of the second microlens.

[0012] Optionally, the first microlens and the second microlens satisfy the following relationship:

[0013]

[0014] Wherein, I1 and I2 are the spectral intensities of the first organic light-emitting unit and the second organic light-emitting unit at the frontal view, respectively; I1′ and I2′ are the spectral intensities of the first organic light-emitting unit and the second organic light-emitting unit at the same side view, respectively; H1 and H2 are the thicknesses of the first microlens and the second microlens, respectively.

[0015] Optionally, the first microlens and the second microlens satisfy the following:

[0016]

[0017] Wherein, D1 and D2 are the bottom diameters of the first microlens and the second microlens, respectively.

[0018] Optionally, the bottom area of ​​the microlens is less than or equal to the light-emitting area of ​​the corresponding organic light-emitting unit.

[0019] Optionally, the microlens layer includes a first adhesive layer and a second adhesive layer stacked sequentially along the light emission direction of the organic light-emitting unit;

[0020] The refractive index of the first adhesive layer is greater than that of the second adhesive layer; the first adhesive layer includes the plurality of microlenses, the surface of the plurality of microlenses convex on the side away from the organic light-emitting unit, and the second adhesive layer covers the plurality of microlenses.

[0021] Optionally, the microlens layer includes a first adhesive layer and a second adhesive layer stacked sequentially along the light emission direction of the organic light-emitting unit;

[0022] The refractive index of the first adhesive layer is less than that of the second adhesive layer; the first adhesive layer includes the plurality of microlenses, the surface of the plurality of microlenses being concave on the side away from the organic light-emitting unit, and the second adhesive layer filling the plurality of microlenses.

[0023] Optionally, the plurality of organic light-emitting units further includes a third organic light-emitting unit; the plurality of microlenses further includes a third microlens;

[0024] In the same at least partial side viewing direction, the spectral intensity of the first organic light-emitting unit, the second organic light-emitting unit, and the third organic light-emitting unit decreases sequentially; the optical power of the first microlens, the second microlens, and the third microlens decreases sequentially.

[0025] Optionally, the first organic light-emitting unit is a green organic light-emitting unit, the second organic light-emitting unit is a red organic light-emitting unit, and the third organic light-emitting unit is a blue organic light-emitting unit.

[0026] Optionally, the organic light-emitting array includes an organic light-emitting functional layer and a color resist layer, wherein the color resist layer is located on the side of the organic light-emitting functional layer away from the silicon-based driving panel; the organic light-emitting functional layer includes a plurality of organic light-emitting devices, and the color resist layer includes a plurality of color resists;

[0027] The first organic light-emitting unit and the second organic light-emitting unit include the organic light-emitting device with the same structure and the color resist of different colors.

[0028] Secondly, embodiments of the present invention also provide a silicon-based microdisplay, including the silicon-based microdisplay panel described in the first aspect.

[0029] This invention provides a silicon-based microdisplay panel and a silicon-based microdisplay. The silicon-based microdisplay panel includes a silicon-based driving panel, an organic light-emitting array (OLED), and a microlens layer. The OLED is formed on the silicon-based driving panel and includes multiple organic light-emitting units (OLEDs). The silicon-based driving panel drives the OLEDs to emit light. The microlens layer is located on the side of the OLED away from the silicon-based driving panel and includes multiple microlenses, each corresponding to a light-emitting OLED on its light-emitting side. By adjusting the structure of the microlenses, this invention ensures that different OLEDs have the same side-view gain at least partially under the same side viewing angle. This results in the white light color coordinates formed by different OLEDs under side viewing angles being the same as those formed under a normal viewing angle, balancing the light emission efficiency of different OLEDs under side viewing angles and improving the color shift problem of the silicon-based microdisplay panel under side viewing angles. Attached Figure Description

[0030] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0031] Figure 1 This is a schematic diagram of the structure of an existing silicon-based microdisplay panel;

[0032] Figure 2 yes Figure 1 The diagram shows the spectral intensity curves of the silicon-based microdisplay panel at the front and side viewing angles.

[0033] Figure 3 This is a schematic diagram of the structure of a silicon-based microdisplay panel provided in an embodiment of the present invention;

[0034] Figure 4 This is a schematic diagram of another silicon-based microdisplay panel provided in an embodiment of the present invention;

[0035] Figure 5 This is a schematic diagram of the structure of a silicon-based microdisplay provided in an embodiment of the present invention. Detailed Implementation

[0036] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, and not all of the structures.

[0037] The terminology used in the embodiments of this invention is for the purpose of describing specific embodiments only and is not intended to limit the invention. It should be noted that directional terms such as "upper," "lower," "left," and "right" described in the embodiments of this invention are used to describe the angles shown in the accompanying drawings and should not be construed as limiting the embodiments of this invention. Furthermore, in the context, it should be understood that when referring to an element being formed "on" or "below" another element, it can be formed not only directly on or below the other element, but also indirectly on or below it through intermediate elements. The terms "first," "second," etc., are used for descriptive purposes only and do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0038] The term "comprising" and its variations as used in this invention are open-ended, meaning "including but not limited to". The term "based on" means "at least partially based on". The term "one embodiment" means "at least one embodiment".

[0039] It should be noted that the terms "a" and "a plurality of" used in this invention are illustrative rather than restrictive. Those skilled in the art should understand that, unless otherwise expressly indicated in the context, they should be understood as "one or more".

[0040] Figure 1 This is a schematic diagram of the structure of an existing silicon-based microdisplay panel. Figure 2 yes Figure 1The diagram shows the spectral intensity curves of the silicon-based microdisplay panel at the front and side viewing angles. Table 1 is... Figure 1 The table shown illustrates the spectral intensity attenuation ratios of different light-emitting units in a silicon-based microdisplay panel at both the front and side viewing angles. Figure 1 As shown, the silicon-based microdisplay panel includes a silicon-based driving panel 110, an organic light-emitting array 120, a microlens layer 130, and a cover glass 140. The organic light-emitting array 120 is formed on the silicon-based driving panel 110. The microlens layer 130 is located on the side of the organic light-emitting array 120 away from the silicon-based driving panel 110. The microlens layer 130 includes multiple microlenses 1300, each with the same size and height. However, due to the characteristics of the materials used in the organic light-emitting array 120 and the limitations of the device structure of the organic light-emitting units, the degree of intensity reduction of the red, green, and blue spectral colors differs at different viewing angles. (Reference) Figure 2 As shown in Table 1, when the spectral intensity of red, green, and blue is 100% at the frontal viewing angle, the white light color coordinates are (0.313, 0.325). However, at the same side viewing angle, the spectral intensity of red, green, and blue will decrease to different degrees. The blue light spectral intensity decreases by 36% compared to the frontal viewing angle, by 70% compared to the frontal viewing angle, and by 58% compared to the frontal viewing angle. The white light color coordinates drift, and the color coordinates are (0.333, 0.367). This causes the silicon-based microdisplay panel to have a color shift at the side viewing angle, resulting in an image color that is inconsistent with the original hue.

[0041] Table 1

[0042]

[0043]

[0044] To address the aforementioned technical problems, embodiments of the present invention provide a silicon-based microdisplay panel. Figure 3 This is a schematic diagram of the structure of a silicon-based microdisplay panel provided in an embodiment of the present invention, as shown below. Figure 3As shown, the silicon-based microdisplay panel includes a silicon-based driving panel 110, an organic light-emitting array 120, and a microlens layer 130. The organic light-emitting array 120 is formed on the silicon-based driving panel 110 and includes multiple organic light-emitting units 1200. The silicon-based driving panel 110 drives the organic light-emitting units 1200 to emit light. The microlens layer 130 is located on the side of the organic light-emitting array 120 away from the silicon-based driving panel 110 and includes multiple microlenses 1300, each corresponding to a light-emitting unit 1200 on its light-emitting side. Furthermore, compared to a glass-based driving panel, using a silicon-based driving panel 110 allows the circuitry for driving the organic light-emitting units 1200 to emit light to be directly integrated onto the silicon-based driving panel 110, resulting in advantages such as high integration, high resolution, and small size.

[0045] The plurality of organic light-emitting units 1200 include a first organic light-emitting unit 1201 and a second organic light-emitting unit 1202, wherein the first organic light-emitting unit 1201 and the second organic light-emitting unit 1202 emit different colors; the plurality of microlenses 1300 include a first microlens 1301 and a second microlens 1302, wherein the first microlens 1301 is located on the light-emitting side of the first organic light-emitting unit 1201 and the second microlens 1302 is located on the light-emitting side of the second organic light-emitting unit 1202.

[0046] In the same at least part of the side viewing angle direction, the spectral intensity of the first organic light-emitting unit 1201 is greater than the spectral intensity of the second organic light-emitting unit 1202, and the optical power of the first microlens 1301 is greater than the optical power of the second microlens 1302.

[0047] Specifically, spectral intensity represents the light intensity of the organic light-emitting unit 1200 under visible light at different wavelengths, used to indicate the amount of light emitted by the organic light-emitting unit 1200 at different wavelengths. Optical power is the reciprocal of the focal length of the microlens 1300, and can measure the light-converging ability of the microlens 1300. The greater the optical power of the microlens 1300, the stronger its light-converging ability. In the frontal viewing direction, the corresponding spectral intensity gain of the organic light-emitting unit 1200 will increase, while in the side viewing direction, the corresponding spectral intensity gain of the organic light-emitting unit 1200 will decrease. For example, the first organic light-emitting unit 1201 is a green organic light-emitting unit, and the second organic light-emitting unit 1202 is a red organic light-emitting unit. In the same side viewing angle direction, the spectral intensity of the green organic light-emitting unit is greater than that of the red organic light-emitting unit. In order to balance the spectral intensity gain of the green and red organic light-emitting units and avoid the drift phenomenon of white light color coordinates, it is necessary to reduce the spectral intensity of the green organic light-emitting unit and increase the spectral intensity of the red organic light-emitting unit. Therefore, it is necessary to set the optical power of the first microlens 1301 corresponding to the green organic light-emitting unit to be greater than that of the second microlens 1302 corresponding to the red organic light-emitting unit, thereby reducing the light focusing ability of the green organic light-emitting unit and increasing the light focusing ability of the red organic light-emitting unit.

[0048] In this embodiment of the invention, the silicon-based microdisplay panel includes a silicon-based driving panel, an organic light-emitting array (OLED), and a microlens layer. The OLED is formed on the silicon-based driving panel and includes multiple organic light-emitting units (OLEDs). The silicon-based driving panel drives the OLEDs to emit light. The microlens layer is located on the side of the OLED away from the silicon-based driving panel and includes multiple microlenses, each corresponding to a light-emitting OLED on its light-emitting side. By adjusting the structure of the microlenses, this embodiment of the invention ensures that different OLEDs have the same side-view gain at least partially under the same side viewing angle. This results in the white light color coordinates formed by different OLEDs under side viewing angles being the same as those formed under a normal viewing angle, balancing the light emission efficiency of different OLEDs under side viewing angles and improving the color shift problem of the silicon-based microdisplay panel under side viewing angles.

[0049] Furthermore, the first microlens 1301 and the second microlens 1302 have the same volume.

[0050] In the actual fabrication process of the microlens 1300, the first microlens 1301 and the second microlens 1302, fabricated using the same process, have the same volume, which saves on process steps. By adjusting the aperture size of the mask, the radius of curvature of the microlens 1300 can be changed. Three different radii of curvature for the microlens 1300 can be achieved without adding an additional fabrication process.

[0051] Specifically, the bottom area of ​​the first microlens 1301 is smaller than the bottom area of ​​the second microlens 1302, and the thickness H1 of the first microlens 1301 is greater than the thickness H2 of the second microlens 1302.

[0052] Due to the characteristics of the materials used in the organic light-emitting array 120 and the limitations of the device structure of the organic light-emitting unit 1200, the degree of decrease in the spectral intensity of red, green, and blue colors varies under different side viewing angles. To ensure that the spectral intensity of organic light-emitting units 1200 of different colors is balanced under the same, at least partially, side viewing angles, this improves the color shift phenomenon of the silicon-based microdisplay panel under side viewing angles. Under the same side viewing angle, for organic light-emitting units 1200 with higher spectral intensity, the corresponding microlens 1300 should have a higher optical power and a greater light-converging ability, thus reducing the spectral intensity under the side viewing angle. Conversely, for organic light-emitting units 1200 with lower spectral intensity, the corresponding microlens 1300 should have a lower optical power and a lesser light-converging ability, thus appropriately increasing the spectral intensity under the side viewing angle. This balances the differences in spectral intensity among the various organic light-emitting units under different side viewing angles.

[0053] Continue to refer to Figure 3 The spectral intensity of the first organic light-emitting unit 1201 is greater than that of the second organic light-emitting unit 1202, and the optical power of the first microlens 1301 is greater than that of the second microlens 1302. The first microlens 1301 is located on the light-emitting side of the first organic light-emitting unit 1201, and the second microlens 1302 is located on the light-emitting side of the second organic light-emitting unit 1202. It should be noted that the thicker the microlens 1300, the stronger the light-converging effect, resulting in more light rays parallel to the central normal of the microlens and fewer light rays in other directions. Therefore, the spectral intensity of the light decreases more rapidly at side viewing angles. Furthermore, changes in the size of the microlens 1300 have virtually no impact on the light-converging ability. The microlenses 1300 corresponding to organic light-emitting units 1200 of different colors have different thicknesses, so that after light passes through the microlenses 1300, the final degree of decrease in the spectral intensity of the light is the same in the same side viewing angle direction. This makes the white light color coordinates under the side viewing angle the same as the white light color coordinates under the front viewing angle, thus improving the color shift phenomenon of silicon-based microdisplay panels under the side viewing angle.

[0054] Specifically, the first microlens 1301 and the second microlens 1302 satisfy the following relationship:

[0055]

[0056] Wherein, I1 and I2 are the spectral intensities of the first organic light-emitting unit 1201 and the second organic light-emitting unit 1202 at a positive viewing angle, respectively; I1′ and I2′ are the spectral intensities of the first organic light-emitting unit 1201 and the second organic light-emitting unit 1202 at the same side viewing angle, respectively; H1 and H2 are the thicknesses of the first microlens 1301 and the second microlens 1302, respectively.

[0057] The first organic light-emitting unit 1201, under the action of the first microlens 1301, has a spectral intensity gain of G1 = α1*H1 + β1 at a positive viewing angle; the second organic light-emitting unit 1202, under the action of the second microlens 1302, has a spectral intensity gain of G2 = α2*H2 + β2 at a positive viewing angle; where α1, β1, α2 and β2 are constants.

[0058] The first organic light-emitting unit 1201, under the action of the first microlens 1301, experiences a spectral intensity gain at a side viewing angle. The second organic light-emitting unit 1202, under the action of the second microlens 1302, experiences a spectral intensity gain at a side viewing angle.

[0059] It should be noted that I1, I2, I1′, and I2′ are determined by the emitted light wavelength and the material of the organic light-emitting unit 1200. The relationship between the thickness of the microlens 1300 and the spectral intensity gain is G = α * H + β, where α and β are determined by the emitted light wavelength and the refractive index of the microlens layer 130. In a silicon-based microdisplay panel, the emitted light wavelength, the material of the organic light-emitting unit 1200, and the refractive index of the microlens layer 130 are already determined. I1, I2, I1′, I2′, α, and β are known values, and H1 and H2 can be solved using the above formula.

[0060] Specifically, the first microlens 1301 and the second microlens 1302 satisfy the following:

[0061]

[0062] Wherein, D1 and D2 are the bottom diameters of the first microlens 1301 and the second microlens 1302, respectively.

[0063] The volumes of the first microlens 1301 and the second microlens 1302 are equal. As can be seen from the above formula, when H1 and H2 are determined, D1 and D2 can be calculated. The values ​​of D1 and D2 can also be used to calculate the values ​​of the bottom areas of the first microlens 1301 and the second microlens 1302.

[0064] When the bottom area of ​​the first microlens 1301 is smaller than the bottom area of ​​the second microlens 1302, the thickness H1 of the first microlens 1301 is greater than the thickness H2 of the second microlens 1302, and the bottom area of ​​the first microlens 1301, the thickness H1 of the first microlens 1301, the bottom area of ​​the second microlens 1302, and the thickness H2 of the second microlens 1302 satisfy the relationship of the above formula, under the same side viewing angle, the spectral intensity gain generated by the organic light-emitting units 1200 corresponding to different microlenses 1300 under the same side viewing angle is the same, so that the white light color coordinates under the side viewing angle are the same as those under the front viewing angle, thus improving the color shift phenomenon of silicon-based microdisplay panels under the side viewing angle.

[0065] Specifically, the bottom area of ​​the microlens 1300 is less than or equal to the light-emitting area of ​​the corresponding organic light-emitting unit 1200.

[0066] The bottom area of ​​the microlens 1300 is less than or equal to the light-emitting area of ​​the corresponding organic light-emitting unit 1200, which ensures that the light diffusion is from the organic light-emitting unit 1200 to the corresponding microlens 1300. However, when the bottom area of ​​the microlens 1300 is greater than the light-emitting area of ​​the corresponding organic light-emitting unit 1200, the excess area may interfere with the light emission of adjacent organic light-emitting units 1200, affecting the emission of two colors of light from a single pixel.

[0067] Specifically, the microlens layer 130 includes a first adhesive layer 131 and a second adhesive layer 132 stacked sequentially along the light emission direction of the organic light-emitting unit 1200; the refractive index of the first adhesive layer 131 is greater than the refractive index of the second adhesive layer 132; the first adhesive layer 131 includes the plurality of microlenses, the surface of the plurality of microlenses being convex on the side away from the organic light-emitting unit 1200, and the second adhesive layer 132 covering the plurality of microlenses.

[0068] Continue to refer to Figure 3 The microlens layer 130 includes a first adhesive layer 131 and a second adhesive layer 132 sequentially stacked along the light emission direction of the organic light-emitting unit 1200. The first adhesive layer 131 includes the plurality of microlenses, and the second adhesive layer 132 covers the plurality of microlenses. Since the refractive index of the first adhesive layer 131 is greater than that of the second adhesive layer 132, the light converges more readily at the interface between the first adhesive layer 131 and the second adhesive layer 132 as the light travels from a denser medium to a less dense medium. This allows most of the emitted light from the organic light-emitting unit 1200 to be emitted parallel to the central normal of the microlens 1300, thus improving the light emission efficiency.

[0069] Specifically, the microlens layer 130 includes a first adhesive layer 131 and a second adhesive layer 132 stacked sequentially along the light emission direction of the organic light-emitting unit 1200; the refractive index of the first adhesive layer 131 is less than the refractive index of the second adhesive layer 132; the first adhesive layer 131 includes the plurality of microlenses, the surface of the microlenses away from the organic light-emitting unit 1200 is concave, and the second adhesive layer 132 fills the plurality of microlenses.

[0070] Figure 4 This is a schematic diagram of another silicon-based microdisplay panel provided in an embodiment of the present invention, as shown below. Figure 4 As shown, the microlens layer 130 includes a first adhesive layer 131 and a second adhesive layer 132 sequentially stacked along the light emission direction of the organic light-emitting unit 1200. The first adhesive layer 131 includes the plurality of microlenses, and the second adhesive layer 132 fills the plurality of microlenses. Since the refractive index of the first adhesive layer 131 is less than that of the second adhesive layer 132, the light travels from a less dense medium to a denser medium. The combination of the first adhesive layer 131 and the second adhesive layer 132 acts to converge the light. The convergence of light can be enhanced at the interface between the first adhesive layer 131 and the second adhesive layer 132, so that most of the emitted light from the organic light-emitting unit 1200 is emitted parallel to the central normal of the microlens 1300, thereby improving the light emission efficiency.

[0071] Specifically, the plurality of organic light-emitting units 1200 further includes a third organic light-emitting unit 1203; the plurality of microlenses further includes a third microlens 1303; in the same at least part of the side viewing angle direction, the spectral intensity of the first organic light-emitting unit 1201, the second organic light-emitting unit 1202 and the third organic light-emitting unit 1203 decreases sequentially; the optical power of the first microlens 1301, the second microlens 1302 and the third microlens 1303 decreases sequentially.

[0072] Continue to refer to Figure 3 The third microlens 1303 is located on the light-emitting side of the third organic light-emitting unit 1203, and the first light-emitting unit 1201, the second light-emitting unit 1202, and the third light-emitting unit 1203 emit different colors. Specifically, in the same at least part of the side viewing angle direction, the spectral intensity of the first organic light-emitting unit 1201, the second organic light-emitting unit 1202, and the third organic light-emitting unit 1203 decreases sequentially; the optical power of the first microlens 1301, the second microlens 1302, and the third microlens 1303 also decreases sequentially. It can be seen that the bottom area of ​​the first microlens 1301 is the smallest, the bottom area of ​​the second microlens 1302 is in the middle, and the bottom area of ​​the third microlens 1303 is the largest. Therefore, the thickness H1 of the first microlens 1301 is the largest, the thickness H2 of the second microlens 1302 is in the middle, and the thickness H3 of the third microlens 1303 is the smallest.

[0073] Specifically, the first organic light-emitting unit 1201 is a green organic light-emitting unit, the second organic light-emitting unit 1202 is a red organic light-emitting unit, and the third organic light-emitting unit 1202 is a blue organic light-emitting unit.

[0074] Due to the characteristics of the materials used in the organic light-emitting array 120 and the limitations of the device structure of the organic light-emitting unit 1200, the degree of decrease in the spectral intensity of red, green, and blue colors differs under different side viewing angles. To ensure that the spectral intensity of organic light-emitting units of different colors is balanced under the same, at least partially, side viewing angle, this improves the color shift phenomenon of the silicon-based microdisplay panel under side viewing angles. Red, green, and blue light have different wavelengths. Under the same side viewing angle, blue light experiences the greatest decrease in spectral intensity, green light the least, and red light a moderate decrease. When the spectral intensity of red, green, and blue is not balanced, it leads to color shift in the silicon-based microdisplay panel under side viewing angles. Therefore, the degree of decrease in the spectral intensity of red, green, and blue light should be improved accordingly. The first organic light-emitting unit is designated as a green organic light-emitting unit, the second as a red organic light-emitting unit, and the third as a blue organic light-emitting unit. Furthermore, the spectral intensity of the green, red, and blue organic light-emitting units decreases sequentially, satisfying the desired effect. Figure 2 The spectral intensities of red, green, and blue light, as shown in Table 1, exhibit varying degrees of attenuation at a side viewing angle.

[0075] Specifically, the organic light-emitting array 120 includes an organic light-emitting functional layer 121 and a color resist layer 122. The color resist layer 122 is located on the side of the organic light-emitting functional layer 121 away from the silicon-based driving panel 110. The organic light-emitting functional layer 121 includes multiple organic light-emitting devices, and the color resist layer 122 includes multiple color resists. The first organic light-emitting unit 1201 and the second organic light-emitting unit 1202 include organic light-emitting devices with the same structure and color resists of different colors.

[0076] Continue to refer to Figure 3The organic light-emitting array 120 includes an organic light-emitting functional layer 121 and a color resist layer 122. The color resist layer 122 is located on the side of the organic light-emitting functional layer 121 away from the silicon-based driving panel 110. The color resist layer 122 includes a plurality of color resists. The organic light-emitting functional layer 121 includes a plurality of organic light-emitting devices. Exemplarily, the organic light-emitting devices include an organic light-emitting semiconductor 1211, an anode 1212, a cathode 1213, a pixel definition layer 1214, and a thin film encapsulation layer 1215. An organic light-emitting array 120 is formed on a silicon-based driving panel 110. The organic light-emitting array 120 has multiple anodes 1212 on the side closest to the silicon-based driving panel 110, and a common cathode 1213 on the side furthest from the silicon-based driving panel 110. A pixel definition layer 1214 is located between adjacent anodes 1212. The pixel definition layer 1214 has a bevel angle to reduce the power consumption of the organic light-emitting array 120. The multiple anodes 1214 and the common cathode 1213 ensure the normal operation of the organic light-emitting array 120. A thin-film encapsulation layer 1215 is also located on the side of the common cathode 1214 furthest from the organic light-emitting array 120. The thin-film encapsulation layer 1215 ensures the sealing effect of the organic light-emitting array 120, preventing external interference from affecting light transmission. The organic light-emitting array 120 includes multiple organic light-emitting units 1200, each of which includes an organic light-emitting device with the same structure and color resists of different colors.

[0077] In addition, the silicon-based microdisplay panel also includes a cover glass 140. The cover glass 140 is located on the side of the microlens layer 130 away from the organic light-emitting array 120. The cover glass 140 can protect the microlens layer 130 and prevent external factors such as dust from affecting the transmission of light.

[0078] Based on the same inventive concept, embodiments of the present invention also provide a silicon-based microdisplay. Figure 5 This is a schematic diagram of the structure of a silicon-based microdisplay provided in an embodiment of the present invention, as shown below. Figure 5 As shown, the silicon-based microdisplay includes the silicon-based microdisplay panel 1 provided in any embodiment of the present invention. Therefore, the silicon-based microdisplay provided in the embodiments of the present invention possesses the corresponding beneficial effects of the silicon-based microdisplay panel provided in the embodiments of the present invention, which will not be elaborated here. Exemplarily, the silicon-based microdisplay can be an electronic device such as VR or AR smart glasses, and the embodiments of the present invention do not limit this.

[0079] Note that the above description is merely a preferred embodiment of the present invention and the technical principles employed. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and various obvious changes, readjustments, combinations, and substitutions can be made without departing from the scope of protection of the present invention. Therefore, although the present invention has been described in detail through the above embodiments, the present invention is not limited to the above embodiments, and may include many other equivalent embodiments without departing from the concept of the present invention, the scope of which is determined by the scope of the appended claims.

Claims

1. A silicon-based microdisplay panel, characterized in that, include: Silicon-based driver panel; An organic light-emitting array is formed on the silicon-based driving panel. The organic light-emitting array includes a plurality of organic light-emitting units. The silicon-based driving panel is used to drive the organic light-emitting units to emit light. A microlens layer is located on the side of the organic light-emitting array away from the silicon-based driving panel. The microlens layer includes a plurality of microlenses, each of which is located on the light-emitting side of the organic light-emitting unit. The plurality of organic light-emitting units include a first organic light-emitting unit and a second organic light-emitting unit, wherein the first organic light-emitting unit and the second organic light-emitting unit emit different colors; the plurality of microlenses include a first microlens and a second microlens, wherein the first microlens is located on the light-emitting side of the first organic light-emitting unit and the second microlens is located on the light-emitting side of the second organic light-emitting unit. Wherein, in the same at least part of the side viewing angle direction, the spectral intensity of the first organic light-emitting unit is greater than that of the second organic light-emitting unit, the optical power of the first microlens is greater than that of the second microlens, and the volumes of the first microlens and the second microlens are equal; The first microlens has a greater light-gathering ability in the positive viewing direction than the second microlens in the positive viewing direction. The first microlens has a greater ability to reduce the spectral intensity of the first organic light-emitting unit in the side viewing direction than the second microlens has a greater ability to reduce the spectral intensity of the second organic light-emitting unit in the side viewing direction. In the same at least part of the side viewing direction, the spectral intensity of the first organic light-emitting unit is equal to the spectral intensity of the second organic light-emitting unit. The bottom area of ​​the first microlens is smaller than that of the second microlens, and the thickness of the first microlens is greater than that of the second microlens; furthermore, the bottom radius and thickness of at least one of the first and second microlenses are not equal. In the same at least part of the side viewing angle direction, organic light-emitting units with high spectral intensity have corresponding microlenses with high optical power, which means the microlenses have a greater ability to converge light to reduce the spectral intensity in the side viewing angle direction. Conversely, organic light-emitting units with low spectral intensity have corresponding microlenses with low optical power, which means the microlenses have a lesser ability to converge light to increase the spectral intensity in the side viewing angle direction. This balances the differences in spectral intensity of each organic light-emitting unit in the side viewing angle direction.

2. The silicon-based microdisplay panel according to claim 1, characterized in that, The first microlens and the second microlens satisfy the following relationship: ； in, and These represent the spectral intensities of the first and second organic light-emitting units at a positive viewing angle, respectively. and These are the spectral intensities of the first organic light-emitting unit and the second organic light-emitting unit at the same side viewing angle, respectively. H 1 and H 2 represents the thickness of the first microlens and the second microlens, respectively; , , and It is a constant; , , and It is determined by the wavelength of the emitted light and the refractive index of the microlens layer.

3. The silicon-based microdisplay panel according to claim 2, characterized in that, The first microlens and the second microlens satisfy the following: ； in, D 1 and D 2 represents the bottom diameter of the first microlens and the second microlens, respectively.

4. The silicon-based microdisplay panel according to claim 1, characterized in that, The bottom area of ​​the microlens is less than or equal to the light-emitting area of ​​the corresponding organic light-emitting unit.

5. The silicon-based microdisplay panel according to claim 1, characterized in that, The microlens layer includes a first adhesive layer and a second adhesive layer stacked sequentially along the light emission direction of the organic light-emitting unit; The refractive index of the first adhesive layer is greater than that of the second adhesive layer; the first adhesive layer includes the plurality of microlenses, the surface of the plurality of microlenses convex on the side away from the organic light-emitting unit, and the second adhesive layer covers the plurality of microlenses.

6. The silicon-based microdisplay panel according to claim 1, characterized in that, The microlens layer includes a first adhesive layer and a second adhesive layer stacked sequentially along the light emission direction of the organic light-emitting unit; The refractive index of the first adhesive layer is less than that of the second adhesive layer; the first adhesive layer includes the plurality of microlenses, the surface of the plurality of microlenses being concave on the side away from the organic light-emitting unit, and the second adhesive layer filling the plurality of microlenses.

7. The silicon-based microdisplay panel according to claim 1, characterized in that, The plurality of organic light-emitting units further includes a third organic light-emitting unit; the plurality of microlenses further includes a third microlens; In the same at least partial side viewing direction, the spectral intensity of the first organic light-emitting unit, the second organic light-emitting unit, and the third organic light-emitting unit decreases sequentially; the optical power of the first microlens, the second microlens, and the third microlens decreases sequentially.

8. The silicon-based microdisplay panel according to claim 7, characterized in that, The first organic light-emitting unit is a green organic light-emitting unit, the second organic light-emitting unit is a red organic light-emitting unit, and the third organic light-emitting unit is a blue organic light-emitting unit.

9. The silicon-based microdisplay panel according to claim 1, characterized in that, The organic light-emitting array includes an organic light-emitting functional layer and a color resist layer, wherein the color resist layer is located on the side of the organic light-emitting functional layer away from the silicon-based driving panel; the organic light-emitting functional layer includes a plurality of organic light-emitting devices, and the color resist layer includes a plurality of color resists; The first organic light-emitting unit and the second organic light-emitting unit include the organic light-emitting device with the same structure and the color resist of different colors.

10. A silicon-based microdisplay, characterized in that, Including the silicon-based microdisplay panel as described in any one of claims 1-9.

Images