Display panel and display device thereof

Abstract

Embodiments of the present disclosure provide a display panel and a display device. The display panel comprises an array substrate, a counter substrate, a reflection layer and a first prism structure layer. The counter substrate is arranged opposite to the array substrate, and a liquid crystal layer is arranged between the array substrate and the counter substrate. The array substrate and the counter substrate jointly define a plurality of sub-pixel regions. The reflection layer is arranged on a side of the array substrate facing the counter substrate, and the reflection layer comprises a reflection region corresponding to the sub-pixel region. The first prism structure layer is arranged on a side of the counter substrate facing the array substrate, and the first prism structure layer is used for refracting first light rays incident from the counter substrate in a direction towards the reflection region, and refracting the first light rays reflected after passing through the reflection region in a direction towards the counter substrate. The technical scheme of the present disclosure can increase the transmittance of incident light rays, improve the brightness of the display product in reflection mode, and improve the display effect of the display product.

Description

Technical Field

[0001] This disclosure relates to the field of display device technology, and more particularly to a display panel and a display device thereof. Background Technology

[0002] A liquid crystal display panel includes an array substrate, a cell substrate, and a liquid crystal layer located between the array substrate and the cell substrate. Since liquid crystal molecules do not emit light themselves, liquid crystal display panels require a light source to display images. Depending on the type of light source used, liquid crystal display panels can be classified as transmissive, reflective, and semi-transmissive / semi-reflective.

[0003] Reflective and transflective display panels can utilize ambient light sources for display in reflective mode. However, they may also suffer from low brightness and poor display quality in reflective mode. Summary of the Invention

[0004] This disclosure provides a display panel and a display device thereof to solve or alleviate one or more technical problems in the prior art.

[0005] As a first aspect of the present disclosure, an embodiment of the present disclosure provides a display panel, including an array substrate, a counter substrate, a reflective layer, and a first prism structure layer. The counter substrate and the array substrate are disposed opposite to each other, and a liquid crystal layer is disposed between the array substrate and the counter substrate. The array substrate and the counter substrate together define a plurality of sub-pixel regions. The reflective layer is disposed on the side of the array substrate facing the counter substrate, and the reflective layer includes a reflective area corresponding to the sub-pixel region. The first prism structure layer is disposed on the side of the counter substrate facing the array substrate. The first prism structure layer is used to refract a first light ray incident from the counter substrate in a direction toward the reflective area, and to refract the first light ray reflected by the reflective area in a direction toward the counter substrate.

[0006] In some possible implementations, the surface of the first prism structure layer on the side away from the substrate includes a plurality of first microprism structures, the first microprism structures protruding in a direction away from the substrate, and the protruding surface of the first microprism structure is curved, and the refractive index of the first microprism structure layer is greater than the refractive index of the substrate.

[0007] In some possible implementations, the distance between the protruding surface of the first microprism structure and the substrate gradually increases from the edge to the center.

[0008] In some possible implementations, the center-to-center spacing of adjacent first microprism structures located in the same sub-pixel region is 500–600 nm; and / or, the size of the first microprism structure in a first direction is 300–400 nm, the first direction being perpendicular to the array substrate.

[0009] In some possible implementations, a transmissive layer is also included, which is disposed on the side of the array substrate facing the cell substrate. The transmissive layer includes a transmissive region corresponding to the sub-pixel region, and a reflective region is disposed around the transmissive region. The array substrate includes a backlight module, and the second light emitted from the backlight module passes through the transmissive region and is then modulated and emitted by the first prism structure layer.

[0010] In some possible implementations, a second prism structure layer is also included, which is located on the side of the transmission layer facing the substrate. The second prism structure layer is used to refract the second light rays passing through the transmission area in the direction toward the substrate, and the refraction angle of the refracted second light rays is greater than the incident angle.

[0011] In some possible implementations, the orthographic projection of the refracted second ray onto the array substrate in the second direction is smaller than the size of the sub-pixel region in the second direction, where the second direction is the arrangement direction of sub-pixel regions of different colors.

[0012] In some possible implementations, the surface of the second prism structure layer on the side away from the array substrate includes at least one second microprism structure, the second microprism structure protruding in a direction away from the array substrate, and the protruding surface of the second microprism structure is curved.

[0013] In some possible implementations, the distance between the protruding surface of the second microprism structure and the array substrate gradually increases from the edge to the center.

[0014] In some possible implementations, the first prism structure layer includes a first part and a second part, wherein the orthographic projection of the first part on the array substrate coincides with the transmission region, and the orthographic projection of the second part on the array substrate coincides with the reflection region; the first microprism structure of the first part and the first microprism structure of the second part are the same; and / or, the second microprism structure is the same as the first microprism structure.

[0015] In some possible implementations, the center-to-center spacing of adjacent second microprism structures located in the same sub-pixel region is 500–600 nm; and / or, the size of the second microprism structure in a first direction is 300–400 nm, the first direction being perpendicular to the array substrate.

[0016] In some possible implementations, both the first and second microprism structures are distributed Bragg reflection microprisms. The first and second microprism structures each include multiple stacked arc-shaped film layers with different refractive indices for adjacent arc-shaped film layers.

[0017] In some possible implementations, the spacing between the cell substrate and the transmissive layer in the first direction is 4 to 6 μm, and the spacing between the cell substrate and the reflective layer in the first direction is half of the spacing between the cell substrate and the transmissive layer in the first direction, wherein the first direction is perpendicular to the array substrate.

[0018] In some possible implementations, the array substrate further includes a first substrate and a first polarizer, the first polarizer being located between the backlight module and the first substrate, the backlight module being located on the side of the first substrate away from the liquid crystal layer, and a second prism structure layer being located on the side of the first substrate close to the liquid crystal layer; the cell substrate includes a second substrate and a second polarizer, the second polarizer being located on the side of the second substrate away from the liquid crystal layer, and the first prism structure layer being located on the side of the second substrate close to the liquid crystal layer.

[0019] In some possible implementations, a sealing adhesive is also included, which is located between the cell substrate and the array substrate and is disposed around the first prism structure layer.

[0020] As a second aspect of the present disclosure, the present disclosure provides a display device including the display panel described in any of the disclosed embodiments.

[0021] The technical solutions of the present disclosure embodiments can achieve the following beneficial effects: they can increase the transmittance of incident light, improve the brightness of the reflection mode of the display product, and improve the display effect of the display product.

[0022] The above overview is for illustrative purposes only and is not intended to be limiting in any way. Further aspects, embodiments, and features of this disclosure will become readily apparent from the accompanying drawings and the following detailed description, in addition to the illustrative aspects, embodiments, and features described above. Attached Figure Description

[0023] In the accompanying drawings, unless otherwise specified, the same reference numerals throughout the various drawings denote the same or similar parts or elements. These drawings are not necessarily drawn to scale. It should be understood that these drawings depict only some embodiments according to this disclosure and should not be construed as limiting the scope of this disclosure.

[0024] Figure 1 This is a schematic diagram of a cross-section of a display panel reflecting a certain mode, which is related to the art.

[0025] Figure 2 This is a schematic diagram of a cross-section of a display panel in a transflective mode, related to the technology.

[0026] Figure 3 This is a schematic diagram illustrating the principle of total internal reflection of light.

[0027] Figure 4This is a cross-sectional schematic diagram of the display panel according to an embodiment of the present disclosure;

[0028] Figure 5 This is a cross-sectional schematic diagram of the display panel according to an embodiment of the present disclosure;

[0029] Figure 6 This is a plan view of the display panel according to an embodiment of the present disclosure;

[0030] Figure 7 This is a plan view of the display panel according to an embodiment of the present disclosure;

[0031] Figure 8 This is a cross-sectional schematic diagram of the display panel according to an embodiment of the present disclosure;

[0032] Figure 9 This is a schematic diagram of the reflection mode of the display panel according to an embodiment of the present disclosure;

[0033] Figure 10 This is a schematic diagram of the transflective mode of the display panel according to an embodiment of the present disclosure;

[0034] Figure 11 This is a cross-sectional schematic diagram of a display device in the related art;

[0035] Figure 12 This is a cross-sectional schematic diagram of another display panel related to the technology;

[0036] Figure 13 This is a plan view of the display panel according to an embodiment of the present disclosure;

[0037] Figure 14 This is a schematic diagram showing the relationship between the microprism structure and the optical path in an embodiment of this disclosure;

[0038] Figure 15 This is a schematic diagram of the optical path without the first prism structure layer and the second prism structure layer in an embodiment of this disclosure;

[0039] Figure 16 This is a schematic diagram of the optical path with a first prism structure layer and a second prism structure layer according to an embodiment of the present disclosure;

[0040] Figure 17 This is a schematic diagram of the specific structure of the first and second microprism structures according to embodiments of this disclosure.

[0041] Figure 18 This is a schematic diagram of the distributed Bragg reflection microprism spectral testing method according to an embodiment of the present disclosure;

[0042] Figure 19 This is a schematic diagram simulating the spectral narrowing of a distributed Bragg reflection microprism according to an embodiment of this disclosure;

[0043] Figure 20This is a cross-sectional schematic diagram of the display panel according to an embodiment of the present disclosure. Detailed Implementation

[0044] In the following description, only certain exemplary embodiments are briefly described. As those skilled in the art will recognize, the described embodiments can be modified in various ways without departing from the spirit or scope of this disclosure. Therefore, the drawings and description are to be considered exemplary in nature and not restrictive.

[0045] Currently, reflective display panels can utilize ambient light such as sunlight, have relatively low power consumption, and are widely used in display scenarios such as electronic tags and outdoor displays. However, reflective display panels are limited by ambient light; for example, their application is restricted when ambient light is insufficient. Transmissive display panels, on the other hand, can activate reflective mode to completely reflect ambient light for display when ambient light is sufficient, thus achieving low power consumption and facilitating long-lasting outdoor applications. When ambient light is insufficient, they can activate transmissive mode to simultaneously reflect both ambient light and backlight for display, resulting in relatively enhanced brightness. The combination of these two modes allows users to obtain a relatively clear display effect in different scenarios. Therefore, transmissive display panels have fewer limitations in application scenarios and are widely used in display products for outdoor applications such as wearable devices and bicycle speedometers.

[0046] Figure 1 This is a schematic diagram of a cross-section of a display panel reflecting a certain mode, which is related to the art. Figure 2 This is a schematic cross-sectional view of a transflective display panel in a semi-transparent mode, as described in the related technology. (Refer to...) Figure 1 and Figure 2 As shown, the display panel may include an array substrate 10, a counter substrate 20, a reflective layer 30, a liquid crystal layer 50, and a transmissive layer 60. The counter substrate 20 is disposed opposite to the array substrate 10, and the liquid crystal layer 50 is disposed between the array substrate 10 and the counter substrate 20. The array substrate 10 and the counter substrate 20 together define a plurality of sub-pixel regions. The reflective layer 30 is disposed on the side of the array substrate 10 facing the counter substrate 20, and the reflective layer 30 includes a reflective region S22 corresponding to the sub-pixel region. The transmissive layer 60 is disposed on the side of the array substrate 10 facing the counter substrate 20, and the transmissive layer 60 includes a transmissive region S21 corresponding to the sub-pixel region. Exemplarily, the reflective layer 30 may be a reflective electrode layer, and the transmissive layer 60 may be a transmissive electrode layer.

[0047] For example, Figure 1 and Figure 2The array substrate 10 of the display panel shown may further include a first substrate 11, a first polarizer 12, a backlight module 13, and thin-film transistors 14, etc. The first polarizer 12 is located between the backlight module 13 and the first substrate 11. The backlight module 13 is located on the side of the first substrate 11 opposite to the liquid crystal layer 50. The thin-film transistor layer 13 is disposed on the first substrate 11.

[0048] For example, Figure 1 and Figure 2 The cell substrate 20 shown can be a color filter substrate to achieve color display. The cell substrate 20 includes a second substrate 21, a second polarizer 22 and a common electrode layer 23. The second polarizer is located on the side of the second substrate 21 away from the liquid crystal layer 50, and the common electrode layer 23 is located on the side of the second substrate 21 facing the liquid crystal layer 50.

[0049] For example, the backlight module 13 provides a light source for the transmission mode of the display panel. The light from the backlight module 13 and the ambient light pass through the first polarizer 12 and the second polarizer 22 to form polarized light, which is then controlled by the liquid crystal flipping of the liquid crystal layer 50. The thin film transistor layer 14 can function as a switch. The reflective layer 30 reflects the ambient light incident from the cell substrate 20 and then emits it through the cell substrate 20 for display, while the transmission layer 60 transmits the emitted light from the backlight module 13.

[0050] Figure 3 This is a schematic diagram illustrating the principle of total internal reflection. (For example...) Figure 3 As shown, light ray L enters the cell substrate 20 (optically dense medium) from air at a first angle α. After being refracted at the upper surface of the cell substrate 20, light ray L enters the vacuum (optically rarefied medium) between the cell substrate 20 and the array substrate 10, where the liquid crystal layer 50 is placed, at a second angle β. After being refracted at the lower surface of the cell substrate 20, light ray L enters the vacuum at a third angle γ. When the third angle γ equals 90°, the light ray undergoes total internal reflection at the lower surface of the cell substrate 20.

[0051] like Figure 1 As shown, in reflection mode, the backlight module 13 does not emit light. When the first light ray X1 (external ambient light) is incident on the liquid crystal layer 50 through the interface between the common electrode layer 23 and the liquid crystal layer 50, part of the first light ray X1 undergoes total internal reflection at the interface between the common electrode layer 23 and the liquid crystal layer 50 and is directly emitted. Part of the first light ray X1 is refracted at the interface between the common electrode layer 23 and the liquid crystal layer 50 and is refracted to the reflection area S22. After being reflected by the reflection area S22, it is emitted through the cell substrate 20. Figure 1In the display panel shown, because the second substrate 21 and the common electrode layer 23 are optically denser media, and the area where the liquid crystal layer 50 is located is a vacuum optically less dense medium, some of the first ray X1 will undergo total internal reflection at the interface between the common electrode layer 23 and the liquid crystal layer 50. Figure 1 and Figure 2 As shown, the critical angle of the optically denser medium is α, so the first ray X1 with an incident angle greater than α is difficult to utilize. Since the display panel is used in outdoor scenarios, the ambient light in outdoor scenarios is dispersed, and the total internal reflection phenomenon at the interface between the optically denser and optically less dense media is more severe. In the reflection mode, ambient light with an incident angle greater than α cannot be utilized, which affects the display brightness of the display panel in the reflection mode and thus affects the display effect of the display panel.

[0052] like Figure 2 As shown, in the semi-transmissive and semi-reflective mode, the backlight module 13 emits light. The second light ray X2 emitted by the backlight module 13 is transmitted through the transmission area S21 and then emitted from the cell substrate 20. Part of the first light ray X1 is refracted at the interface between the common electrode layer 23 and the liquid crystal layer 50 and reaches the reflective area S22. Since the second light ray X2 in the transmission area S21 is stronger and the first light ray X1 in the reflective area S22 is weaker, most of the second light ray in the transmission area is emitted directly from the cell substrate 20. This results in a large difference between the emitted light from the transmission area S21 and the reflective area S22, leading to poor brightness uniformity between the transmission area S21 and the reflective area S22. This causes unevenness in the display panel image and affects the display effect of the display panel.

[0053] Figure 1 and Figure 2 The display panel of the related technology shown uses a combination of reflective and transflective modes to provide users with a relatively clear display effect in different scenarios. However, the simultaneous presence of both modes results in a light display color and a low color gamut and color saturation, which affects the display effect.

[0054] In order to improve the display effect of the display panel, related technologies have added scattering films or scattering particles to the first polarizer 12 and the second polarizer 22. However, the improvement in display effect is not significant, and the cost of the first polarizer 12 and the second polarizer 22 is relatively high, resulting in poor improvement and difficulty in meeting user needs.

[0055] To address the problem of poor display performance due to low brightness in reflective mode in related technologies, this disclosure provides a display panel. The technical solution of the display panel is described below with reference to the accompanying drawings.

[0056] Figure 4 This is a cross-sectional schematic diagram of a display panel according to an embodiment of this disclosure. (Refer to...) Figure 4As shown, this embodiment of the present disclosure provides a display panel, which may include an array substrate 10, a cell substrate 20, a reflective layer 30, a first prism structure layer 40, and a liquid crystal layer 50.

[0057] The cell substrate 20 and the array substrate 10 are disposed opposite each other at a distance, and a liquid crystal layer 50 is disposed between the array substrate 10 and the cell substrate 20. The array substrate 10 and the cell substrate 20 together define a plurality of sub-pixel regions. A reflective layer 30 is disposed on the side of the array substrate 10 facing the cell substrate 20, and the reflective layer 30 includes a reflective region S22 corresponding to the sub-pixel region. A first prism structure layer 40 is disposed on the side of the cell substrate 20 facing the array substrate 10. The first prism structure layer 40 is used to refract a first light ray X1 incident from the cell substrate 20 in a direction toward the reflective region S22, and the first prism structure layer 40 is also used to refract the first light ray X1 after being reflected by the reflective region S22 in a direction toward the cell substrate 20.

[0058] When the first ray X1 is incident from the cell substrate 20 onto the liquid crystal layer 50, the angle between the first ray X1 and the normal of the cell substrate 20 is α. Without the first prism structure layer 40, when the angle between the first ray X1 and the normal of the cell substrate 20 is greater than or equal to α, the first ray X1 undergoes total internal reflection at the interface between the cell substrate 20 and the liquid crystal layer 50. When the angle between the first ray X1 and the normal of the cell substrate 20 is less than α, the first ray X1 can be refracted in the direction toward the reflective region S22.

[0059] like Figure 4 The display panel shown features a first prism structure layer 40 on the side of the cell substrate 20 facing the array substrate 10. The angle between the first ray X1 and the normal of the interface between the first prism structure layer 40 and the liquid crystal layer 50 is less than α. The first prism structure layer 40 disrupts the total internal reflection condition when the first ray X1 is incident from the cell substrate 20 onto the liquid crystal layer 50. The first ray X1 is refracted along the direction towards the reflective area S22 at the interface between the first prism structure layer 40 and the liquid crystal layer 50, increasing the amount of light entering the first ray X1 incident at a large angle. This fully utilizes the incident first ray X1 and improves the display brightness of the display panel in reflective mode. After reflection by the reflective area, the first ray X1 is refracted by the liquid crystal layer 50 and the first prism structure layer 40 towards the cell substrate 20, thereby achieving image display on the display panel. Furthermore, the first prism structure layer 40 can converge the light reflected from the reflective area towards the normal direction of the cell substrate 20, thereby reducing the exit angle of the first ray X1 and improving the brightness of the display panel at the viewing angle.

[0060] The display panel of this embodiment has a first prism structure layer 40 disposed on the side of the cell substrate 20 facing the liquid crystal layer 50. With this structure, the first prism structure layer 40 can disrupt the total internal reflection condition when a large-angle incident first ray X1 is incident from the cell substrate 20 to the liquid crystal layer 50. When the display panel is in reflection mode, the large-angle incident first ray is refracted towards the reflection area S22 after passing through the first prism structure layer 40, thereby increasing the amount of light entering the large-angle incident ambient light and improving the transmittance of the outgoing light, thus improving the brightness of the display panel in reflection mode and improving the display effect of the display panel.

[0061] For example, the array substrate 10 of the display panel may only include a reflective area, that is, the display panel may be a reflective display panel. Alternatively, the array substrate 10 of the display panel may include a reflective area and a transmissive area, and the display panel may be a transflective display panel.

[0062] For example, the first prism structure layer 40 is disposed on the side of the cell substrate 20 facing the array substrate 10. The first prism structure layer 40 is used to disrupt the total internal reflection condition of the first light ray X1. The orthographic projection of the first prism structure layer 40 on the cell substrate 20 coincides with the plane of the cell substrate 20, that is, the side of the cell substrate 20 facing the liquid crystal layer 50 is completely covered by the first prism structure layer 40. The size of the first prism structure layer 40 can also be partially covered. The specific size of the first prism structure layer 40 can be set according to actual use needs and is not limited here.

[0063] In one embodiment, such as Figure 4 As shown, the surface of the first prism structure layer 40 on the side away from the substrate 20 includes a plurality of first microprism structures 41. The first microprism structures 41 protrude in a direction away from the substrate 20, and the protruding surface of the first microprism structure 41 is curved. The refractive index of the first microprism structure layer 40 is greater than the refractive index of the substrate 20.

[0064] For example, the cell substrate 20 can be considered as an optically denser medium, the side of the cell substrate 20 facing away from the liquid crystal layer 50 (which is external air) can be considered as an optically less dense medium, and the vacuum environment between the cell substrate 20 and the array substrate 10 can be considered as an optically less dense medium. Light incident from the outside undergoes total internal reflection at the interface between the cell substrate 20 and the liquid crystal layer 50. The first prism structure layer 40 can be used to change the propagation path of the first light ray. The refractive index of the first microprism structure layer 40 is greater than that of the cell substrate 20. The first prism structure layer 40 can act as an optically denser medium, and the cell substrate 20 can act as an optically less dense medium. When the first light ray is incident from the cell substrate 20 onto the first prism structure layer 40, the first prism structure layer 40 can prevent total internal reflection. The convex surface of the first prism structure layer 40 is curved, which can effectively reduce the incident angle of the first light ray X1 incident from the first microprism structure layer 40 into the liquid crystal layer 50, thereby preventing total internal reflection of the first light ray X1.

[0065] It should be noted that the refractive index of the first prism structure layer 40 is greater than that of the substrate 20. The refractive index of the first prism structure layer 40 can be set according to actual usage requirements, and is not limited here.

[0066] For example, the number of first microprism structures 41 can be one, and the first microprism structure 41 corresponds to a sub-pixel region. The orthographic projection of the first microprism structure 41 on the array substrate 10 coincides with the orthographic projection of the sub-pixel region on the array substrate 10, or the orthographic projection of the first microprism structure 41 on the array substrate 10 is located within the orthographic projection of the sub-pixel region on the array substrate. The first microprism structure 41 can be formed by a single patterning process.

[0067] For example, the number of first microprism structures 41 can be two or more. Multiple first microprism structures 41 are connected to form a first prism structure layer 40. A sub-pixel region can correspond to multiple first microprism structures 41. Each first microprism structure 41 can be formed by a patterning process. The specific number of first microprism structures 41 can be set according to actual usage requirements and is not limited here.

[0068] In one embodiment, the distance between the raised surface of the first microprism structure 41 and the substrate 20 gradually increases from the edge to the center. This allows the first light ray X1 to be refracted toward the reflective region S22 at the junction of the raised surface of the first microprism structure 41 and the liquid crystal layer 50. The raised surface of the first microprism structure 41 can modulate the light, thereby breaking the condition for total internal reflection of the first light ray X1.

[0069] For example, the cross-section of the protruding surface of the first microprism structure 41 can be an elliptical arc surface or a circular arc surface. When the first prism structure layer 40 has two or more first microprism structures 41, the surface of the first prism structure layer 40 facing away from the substrate 20 is generally a wavy curved surface.

[0070] In one embodiment, the center-to-center spacing of adjacent first microprism structures 41 located in the same sub-pixel region is 500–600 nm. Exemplarily, the center-to-center spacing of adjacent first microprism structures 41 located in the same sub-pixel region can be 500 nm, 520 nm, 540 nm, 560 nm, 580 nm, or 600 nm. The center-to-center spacing of adjacent first microprism structures 41 located in the same sub-pixel region can be set according to actual usage requirements and is not limited herein.

[0071] In one embodiment, the size of the first microprism structure 41 in the first direction Y is 300-400 nm, where Y is perpendicular to the array substrate 10. The size of the first microprism structure 41 in the first direction Y is 300 nm, 320 nm, 340 nm, 360 nm, 380 nm, or 400 nm. The size of the first microprism structure 41 in the first direction Y can be set according to actual application requirements and is not limited here.

[0072] In one embodiment, the center-to-center spacing of adjacent first microprism structures 41 located in the same sub-pixel region is 500–600 nm. The dimension of the first microprism structure 41 in the first direction Y is 300–400 nm, where the first direction Y is perpendicular to the array substrate.

[0073] Figure 5 This is a cross-sectional schematic diagram of a display panel according to an embodiment of this disclosure. (Refer to...) Figure 5 In one embodiment, the display panel further includes a transmissive layer 60 disposed on the side of the array substrate facing the cell substrate. Figure 6 This is a plan view of the display panel according to an embodiment of the present disclosure, as shown below. Figure 6 As shown, the transmissive layer 60 includes a transmissive region S21 corresponding to the sub-pixel region, and a reflective region S22 is disposed around the transmissive region S21. The array substrate 10 includes a backlight module 13, and the second light X2 emitted from the backlight module 13 passes through the transmissive region S21 and is then modulated and emitted by the first prism structure layer 40.

[0074] The display panel of this embodiment is a transflective display panel. In reflection mode, the backlight module 13 does not emit light. Ambient light is refracted towards the reflective area through the first prism structure layer 40 via the substrate 20, and after reflection in the reflective area, the reflected light is received by the first prism structure layer 40 and refracted out through the first prism structure layer 40. In transflective mode, the backlight module 13 emits light, the reflective area receives ambient light, and the emitted light from the backlight module 13 passes through the transmission area.

[0075] For example, the transmission layer 60 can be made of a transparent conductive material, such as indium tin oxide (ITO), indium zinc oxide (IZO), indium gallium oxide (IGO), gallium zinc oxide (GZO), or carbon nanotubes.

[0076] Figure 7 This is a plan view of the display panel according to an embodiment of the present disclosure. Figure 8 This is a cross-sectional schematic diagram of the display panel according to an embodiment of the present disclosure. Figure 8 It can be Figure 7 A schematic diagram of section AA. (Refer to...) Figure 7 and Figure 8 As shown, in one embodiment, the display panel further includes a second prism structure layer 70. The second prism structure layer 70 is located on the side of the transmission layer 60 facing the substrate 20, and the second prism structure layer 70 is used to refract the second light ray X2 passing through the transmission area in a direction toward the substrate 20, and the refraction angle of the refracted second light ray X2 is greater than the incident angle.

[0077] Figure 9 This is a schematic diagram of the reflection mode of the display panel according to an embodiment of the present disclosure. Figure 10 This is a schematic diagram of a transflective display panel in an embodiment of this disclosure. Figure 9 and Figure 10 As shown, in the display panel of this embodiment, a second prism structure layer 70 is provided on the side of the transmissive layer 60 facing the substrate 20. The second prism structure layer 70 refracts the second light ray X2 passing through the transmissive area in the direction towards the substrate 20, expanding the propagation range of the emitted light from the backlight module 13, so that part of the second light ray X2 passing through the transmissive area enters the reflection area located on the periphery of the transmissive area. After the second light ray emitted from the second prism structure layer 70 reaches the first prism structure layer 40, the light is focused again. The cooperation of the first prism structure layer 40 and the second prism structure layer 70 expands the light emission range, reduces the difference in emitted light between the transmissive area and the reflection area, making the image of the display panel more uniform. In addition, the first prism structure layer 40 can also reduce the emission angle of the emitted light, improve the brightness of the product at the viewing angle, and improve the display effect of the display panel.

[0078] Figure 11 This is a cross-sectional schematic diagram of a display device in the context of related technology. For example... Figure 11 As shown, the display device may include a display panel 1101 having multiple pixel units, each pixel unit including a transmissive area and a reflective area. The display device also includes a backlight module 1102, multiple condensing prisms 1103, and a reflective layer 1104. The backlight module 1102 is disposed on one side of the display panel 1101, and the multiple condensing prisms 1103 are disposed on the side of the backlight module 1102 facing the display panel 1101. The multiple condensing prisms 1103 correspond one-to-one with the multiple pixel units to form a condensing layer that converges the internal light emitted from the backlight module 1102 to the corresponding pixel unit. The reflective layer 1104 is disposed on the side of the condensing layer facing the display panel 1101. The reflective layer 1104 is used to reflect the light illuminating the transmissive area of ​​the pixel unit to the transmissive area of ​​the adjacent pixel unit. The reflective layer 1104 has a mesh through which the internal light converged by each condensing prism passes.

[0079] Figure 11 The display device shown solves the problem of regional brightness difference between the reflective and transmissive areas caused by the large brightness of the reflective area and the small brightness of the transmissive area in strong light environments. The reflective layer 1104 can reflect light, and the condensing prism 1103 can concentrate the light emitted by the backlight module 1102. Figure 11 The display device shown needs to activate the backlight module 1102 in strong light environments to reduce the difference between the reflective and transmissive areas. This results in higher power consumption for the display panel 1101 in strong light conditions. Furthermore, in low light conditions... Figure 11 The display device shown may cause the transmissive area to be too bright and the reflective area to be too dark. Furthermore, Figure 11 The condenser prism 1103 of the display device shown is applied to each pixel unit. The size of the condenser prism is approximately between several hundred nanometers and tens of micrometers. The condenser prism 1103 and the reflective layer 1104 are disposed between the array substrate and the backlight module 1102. They are only protected by a polarizer, which makes them prone to scratches, resulting in white spots on the display screen and affecting the yield.

[0080] This disclosure embodiment Figure 9 and Figure 10 The display panel shown is relative to Figure 11 The display device shown, Figure 9 and Figure 10 The display panel shown can solve the problem of high brightness in the transmissive area and low brightness in the reflective area under certain conditions. Furthermore, the second prism structure layer can diffuse the light in the transmissive area, thereby improving the brightness uniformity of the transmissive and reflective areas. Figure 9 and Figure 10The display panel shown can have a first prism structure layer 40 disposed on the side of the cell substrate 20 facing the liquid crystal layer, and a second prism structure layer 70 disposed on the side of the array substrate 10 facing the liquid crystal layer. The first prism structure layer 40 and the second prism structure layer 70 are sealed and protected by a sealing glue, which can effectively prevent external damage, avoid scratches caused by the polarizer and damage caused by the compression of the backlight film, reduce the defect rate of the display image, and improve the display effect of the display panel.

[0081] Figure 12 This is a cross-sectional schematic diagram of another display panel in the related technology. For example... Figure 12 As shown, the display panel includes an array substrate 1201 and a cell substrate 1202 formed by cell assembly, and a liquid crystal layer 1203 sandwiched between the array substrate 1201 and the cell substrate 1202. The liquid crystal layer 1203 is a blue phase liquid crystal layer. A first polarizer 1204 is located outside the array substrate 1201, and a second polarizer 1205 is located outside the cell substrate 1202. The display panel also includes pixel electrodes 1206 arranged in an array on the inner side of the array substrate 1201, a common electrode 1207 located on the inner side of the cell substrate 1202, a first prism structure layer 1208 located between the liquid crystal layer 1203 and the first polarizer 1204, and a second prism structure layer 1209 located between the liquid crystal layer 1203 and the second polarizer 1205.

[0082] like Figure 12 As shown, the pixel area where each pixel electrode 1206 is located is divided into a transmission area and a reflection area. The portion of the first prism structure layer 1208 located in the transmission area is used to deflect the light incident through the first polarizer 1204. The portion of the second prism structure layer 1209 located in the reflection area is used to deflect the light incident and emitted through the second polarizer 1205. The angle of refraction of the incident light perpendicular to the substrate after passing through the portion of the first prism structure layer 1208 located in the transmission area and the portion of the second prism structure layer 1209 located in the reflection area is large, so that the optical path difference generated by the light in the transmission area and the reflection area after passing through the liquid crystal layer 1203 is the same.

[0083] Figure 12 The display panel shown has the first prism structure layer 1208 and the second prism structure layer 1209 disposed outside the liquid crystal cell. This makes the display panel structure susceptible to scratches and crush damage. Figure 12 The display panel shown has different structural settings for the second prism structure layer 1209 in the transmission and reflection areas. The second prism structure layer 1209 is also set on the second polarizer 1205. The alignment accuracy of the polarizer is generally poor, making it difficult to ensure that the second prism structure layer 1209 in the reflection and transmission areas is misaligned. As a result, the simulated optical path cannot achieve the expected effect. Figure 12The blue phase liquid crystal layer of the display panel shown is isotropic, while ordinary liquid crystal layers are generally anisotropic. Figure 12 The second prism structure layer 1209 of the display panel shown can work with the first prism structure layer 1208 to refract incident light, thereby controlling the light output through the deflection of the blue phase liquid crystal layer. Figure 12 The second prism structure layer 1209 shown is disposed on the surface of the cell substrate 20 facing away from the liquid crystal layer. The second prism structure layer 1209 cannot solve the problem of total internal reflection of the cross section of the cell substrate 20 facing the liquid crystal layer in the related art. Figure 12 The array substrate and the cell substrate 20 of the display panel shown have almost the same spacing in the reflective and transmissive areas, that is, the cell thickness of the reflective and transmissive areas is almost the same. The light in the transmissive area passes through the cell thickness liquid crystal once, and the light in the reflective area passes through the cell thickness liquid crystal twice. The first prism structure layer 1208 and the second prism structure layer 1209 do not change the difference in light efficiency. As a result, the light in the transmissive area and the light in the reflective area have different light efficiency due to the different optical path difference, which affects the display effect of the display panel.

[0084] This disclosure embodiment Figure 9 and Figure 10 The display panel shown is relative to Figure 12 The display panel shown in this embodiment of the present disclosure uses a sealing adhesive to seal and protect the first prism structure layer 40 and the second prism structure layer 70, which can effectively prevent external damage, avoid scratches caused by the polarizer and compression damage to the backlight film, and reduce the defect rate of the displayed image. Moreover, the alignment accuracy of the cell substrate and the array substrate is higher than that of the polarizer, reducing the risk of misalignment.

[0085] Figure 13 This is a plan view of a display panel according to an embodiment of this disclosure. Figure 13 As shown, in one embodiment, the orthogonal projection of the emitting region S1 corresponding to the refracted second ray X2 onto the array substrate in the second direction Z is smaller than the size of the sub-pixel region S2 in the second direction, where the second direction Z is the arrangement direction of sub-pixel regions of different colors.

[0086] The display panel of this embodiment can be provided with a second prism structure layer 70 to diffuse light from the transmissive area to the reflective area. However, the diffusion of light from the transmissive area may cause color cross-contamination between adjacent sub-pixel areas. For example, the sub-pixel areas include red sub-pixel areas, green sub-pixel areas, and blue sub-pixel areas arranged along the second direction Z. When the second prism structure layer 70 of the red sub-pixel area diffuses light into the green sub-pixel area, it will cause color cross-contamination between adjacent sub-pixel areas, affecting the display effect of the display panel.

[0087] For example, the alignment accuracy of the array substrate 10 and the cell substrate 20 can be controlled to improve color mixing between adjacent pixels. For instance, the alignment accuracy of the array substrate 10 and the cell substrate 20 can be controlled to be approximately 2 micrometers, but this requires a high level of alignment accuracy between the array substrate 10 and the cell substrate 20.

[0088] For example, the red, green, and blue sub-pixel regions each have corresponding transmissive areas S21 and reflective areas S22. The reflective areas S22 are arranged around the transmissive areas S21. The area of ​​the transmissive areas S21 can be much smaller than the area of ​​the reflective areas S22. The spacing between the transmissive areas S21 of adjacent sub-pixel regions S2 is relatively large, thereby reducing the risk of color crosstalk caused by light diffusion in the transmissive areas. The size of the transmissive areas can be adjusted according to the actual display effect and is not limited here.

[0089] Figure 14 This is a schematic diagram showing the relationship between the microprism structure and the optical path in an embodiment of this disclosure. Figure 6 , Figure 13 As shown in Figure 14, the dimensions of the second microprism structure 71 determine the light diffusion angle and diffusion area. The side length of the transmission region is a, the side length of the emission region S1 after the light diffuses through the second microprism structure 71 is b, the distance between the cell substrate and the array substrate is c (the thickness of the liquid crystal cell), the radius of the second microprism structure 71 is r, the incident angle of the second light is α, the refraction angle of the second light is β, and the refractive index of the second microprism structure 71 is n.

[0090] According to the following formula:

[0091]

[0092]

[0093] When α is the critical angle and β is 90°, the limiting value of the exit region of the second ray is:

[0094] According to the above formula, the emission region of the second light diffusion is related to parameters such as the side length *a* of the transmission region, the radius *r* of the second microprism structure 71, the refractive index *n* of the second microprism structure 71, and the thickness *c* of the liquid crystal cell. In this embodiment, the limit value of the side length *b* of the emission region S1 is set to be less than the size of the sub-pixel region in the second direction, i.e., the width of the sub-pixel region S2. This reduces the risk of color crosstalk between adjacent sub-pixel regions.

[0095] Figure 15 This is a schematic diagram of the optical path without the first prism structure layer and the second prism structure layer in an embodiment of this disclosure. Figure 16 This is a schematic diagram of the optical path with a first prism structure layer and a second prism structure layer according to an embodiment of this disclosure. (Comparison) Figure 15 and Figure 16 The illustrated optical path diagram shows that the exit area S1 of the second light ray after passing through the first and second prism structural layers is larger than the exit area without the first and second prism structural layers. The second prism structural layer can scatter the perpendicularly incident light from the backlight module, allowing some of the second light ray to enter the surrounding reflective area. After the second light ray exiting from the second prism structural layer reaches the first prism structural layer, the light is focused. The cooperation of the first and second prism structural layers expands the exit range of the second light ray, reduces the light difference between the transmission and reflection areas, makes the display panel image more uniform, and reduces the exit angle of the scattered light, increasing the brightness at the viewing angle and effectively improving the display effect.

[0096] like Figure 9 and Figure 10 As shown, in one embodiment, the surface of the second prism structure layer 70 on the side away from the array substrate 10 includes at least one second microprism structure 71, the second microprism structure 71 protruding in a direction away from the array substrate 10, and the protruding surface of the second microprism structure 71 is curved.

[0097] In one embodiment, the distance between the raised surface of the second microprism structure 71 and the array substrate gradually increases from the edge to the center. This allows the second light ray X2 to be deflected and diffused toward the reflective region S22 at the junction of the raised surface of the second microprism structure 71 and the liquid crystal layer 50. The raised surface of the second microprism structure 71 can modulate the light, thereby diffusing the light from the transmission region to the reflective region.

[0098] For example, the cross-section of the protruding surface of the second microprism structure 71 can be an elliptical arc surface or a circular arc surface. When the second prism structure layer 70 has two or more second microprism structures 71, the surface of the second prism structure layer 70 facing away from the array substrate 10 is generally a wavy curved surface.

[0099] like Figure 9 and Figure 10 As shown, in one embodiment, the first prism structure layer 40 includes a first part and a second part. The orthographic projection of the first part on the array substrate 10 coincides with the transmission area, and the orthographic projection of the second part on the array substrate 10 coincides with the reflection area. The first microprism structure 41 of the first part and the first microprism structure 41 of the second part are the same.

[0100] Since there is a certain deviation in the alignment of the cell substrate 20 and the array substrate 10, the embodiments of this disclosure set the first microprism structure of the first part and the first microprism structure of the second part to be the same. This can reduce the influence of the first microprism structure of the transmission area and the reflection area on the optical path and improve the display effect of the display panel.

[0101] In one embodiment, the second microprism structure 71 is identical to the first microprism structure 41. With this structure, the second light rays emitted from the second microprism structure are converged by the first microprism structure 41, allowing the second light rays to be emitted perpendicularly from the substrate 20. This combination of the second and first microprism structures expands the emission range of the second light rays, reduces the difference in emitted light between the transmission and reflection areas, makes the display image on the display panel more uniform, and simultaneously reduces the emission angle of scattered light, improving the brightness of the display panel at the viewing angle.

[0102] In one embodiment, the center-to-center spacing of adjacent second microprism structures 71 located in the same sub-pixel region is 500–600 nm. Exemplarily, the center-to-center spacing of adjacent second microprism structures 71 located in the same sub-pixel region can be 500 nm, 520 nm, 540 nm, 560 nm, 580 nm, or 600 nm. The center-to-center spacing of adjacent second microprism structures 71 located in the same sub-pixel region can be set according to actual usage requirements and is not limited herein.

[0103] In one embodiment, the second microprism structure 71 has a dimension of 300-400 nm in a first direction, which is perpendicular to the array substrate. The dimension of the second microprism structure 71 in the first direction Y is 300 nm, 320 nm, 340 nm, 360 nm, 380 nm, or 400 nm. The dimension of the second microprism structure 71 in the first direction Y can be set according to actual application requirements and is not limited here.

[0104] In one embodiment, the center-to-center spacing of adjacent second microprism structures 71 located in the same sub-pixel region is 500-600 nm, and the size of the second microprism structure 71 in a first direction is 300-400 nm, the first direction being perpendicular to the array substrate.

[0105] Figure 17 This is a schematic diagram illustrating the specific structure of the first and second microprism structures according to embodiments of this disclosure. (Refer to...) Figure 17 As shown, in one embodiment, the first microprism structure 41 and the second microprism structure 71 are both distributed Bragg reflection microprisms. The first microprism structure 41 and the second microprism structure 71 each include multiple stacked arc-shaped film layers, and the refractive indices of adjacent arc-shaped film layers are different.

[0106] Distributed Bragg reflector microprisms are formed by stacking thin film layers with different refractive indices. When light passes through these thin films with different refractive indices, it undergoes continuous emission and refraction. When the number of thin film layers constituting the Bragg reflector microprism is N (where N is a positive integer greater than or equal to 2), and the differences in the refractive indices of the thin film layers (n1, n2, n3...) are small, the light travels as if in a single medium, resulting in a low reflection coefficient. The multiple interferences of the light result in a very significant interference effect. Therefore, distributed Bragg reflector microprisms have high sensitivity to wavelength selection. Distributed Bragg reflector microprisms can be applied to SLR camera lenses. Ideally, light can pass completely through the lens. By using distributed Bragg reflector microprisms, reflections can be reduced within a certain wavelength range, thereby increasing the light flux.

[0107] Figure 18 This is a schematic diagram of the distributed Bragg reflectance microprism spectroscopy testing method according to an embodiment of this disclosure. Figure 19 This is a schematic diagram simulating the spectral narrowing of a distributed Bragg reflection microprism according to an embodiment of this disclosure. Figure 18 As shown, a standard backlight module can be selected, with a brightness of approximately 4000 nits. The light from the backlight module passes through both ordinary glass and glass with a Bragg reflective film. A rapid spectral analyzer captures the wavelength and transmittance, allowing for the simulation of the wavelength-transmittance relationship curve. The curve is shown in the figure. Figure 19 As shown, by comparing the two curves, it can be concluded that the spectrum narrows after passing through the distributed Bragg reflection microprism.

[0108] It should be noted that the distributed Bragg reflection microprism is a one-dimensional photonic crystal. The distributed Bragg reflection microprism combines a reflector and a microprism, which can improve the optical path effect and narrow the spectrum, effectively increasing the transmittance of visible light wavelengths, thereby improving the color gamut and color saturation of display products.

[0109] The first microprism structure 41 and the second microprism structure 71 of the display panel in this embodiment adopt distributed Bragg reflection microprisms. The light in the reflective mode of the display panel passes through the first microprism structure twice, and the light in the semi-transparent and semi-reflective mode of the display panel passes through the first microprism structure once and the second microprism structure once. In this way, the light in both the reflective and semi-transparent and semi-reflective modes of the display panel passes through the distributed Bragg reflection microprism twice, resulting in a consistent spectral narrowing effect. This leads to consistent color enhancement in both modes, improving the consistency of the color gamut and color saturation of the display panel in both reflective and semi-transparent and semi-reflective modes.

[0110] Distributed Bragg reflection microprisms can function as filters. Bragg reflection microprisms are composed of two materials with different refractive indices stacked alternately and fabricated by vacuum evaporation or epitaxial growth. The first and second microprism structures in the embodiments of this disclosure include multiple stacked arc-shaped film layers with different refractive indices, thereby narrowing the spectrum and filtering the light. At the same time, the first and second microprism structures can also change the optical path.

[0111] For example, the thickness of the arc-shaped film can be one-quarter of the incident light wavelength, and the thickness can be between tens and hundreds of nanometers; the specific value of the arc-shaped film thickness is not limited here. The material of the arc-shaped film can be titanium dioxide (TiO2) and silicon dioxide (SiO2), or it can also be aluminum arsenide (AlAs) and aluminum gallium arsenide (AlGaAs), or it can be silicon dioxide (SiO2) and silicon nitride (Si3N4). Different combinations of materials in the arc-shaped film result in different filtering effects, which can be adjusted according to the actual application.

[0112] It should be noted that the material, thickness, and number of arc-shaped films can be adjusted according to the effect of spectral narrowing, and are not limited here.

[0113] Reference Figure 9 and Figure 10 In one embodiment, the spacing between the cell substrate 20 and the transmissive layer 70 in the first direction Y is 4 to 6 μm, and the spacing between the cell substrate 20 and the reflective layer 40 in the first direction Y is half of the spacing between the cell substrate 20 and the transmissive layer 70 in the first direction Y, wherein the first direction Y is perpendicular to the array substrate 10.

[0114] like Figure 9 and Figure 10 As shown, by way of example, the array substrate 10 also includes a pad layer located in the region where the reflective layer is located. The pad layer can reduce the spacing between the cell substrate 20 and the reflective layer 40 in the first direction Y. For example, the pad layer can be an inorganic insulating material.

[0115] For example, the first light beam passes through the cell substrate 20 and is incident on the liquid crystal layer, then is reflected by the reflective area and exits from the liquid crystal layer. The first light beam passes through the liquid crystal layer twice. The second light beam is transmitted through the transmissive layer and then exits from the liquid crystal layer. The second light beam passes through the liquid crystal layer only once. Thus, there is an optical path difference between the first and second light beams. In this embodiment, the distance between the cell substrate 20 and the reflective layer 40 in the first direction Y is half the distance between the cell substrate 20 and the transmissive layer 70 in the first direction Y, thereby reducing the optical path difference between the first and second light beams and improving the display effect of the display panel.

[0116] For example, the spacing between the substrate 20 and the transmissive layer 70 in the first direction Y can be 4μm, 4.5μm, 5μm, 5.5μm, or 6μm.

[0117] Reference Figure 9 and Figure 10 As shown, in one disclosed embodiment, the array substrate 10 includes a first substrate 11, a first polarizer 12, and a backlight module 13. The first polarizer 12 is located between the backlight module 13 and the first substrate 11, and the backlight module 13 is located on the side of the first substrate 11 facing away from the liquid crystal layer 50. A second prism structure layer 70 is located on the side of the first substrate 11 closest to the liquid crystal layer 50.

[0118] For example, the cell substrate 20 includes a second substrate 21 and a second polarizer 22, the second polarizer 22 being located on the side of the second substrate 21 away from the liquid crystal layer 50, and the first prism structure layer 40 being located on the side of the second substrate 21 close to the liquid crystal layer 50.

[0119] For example, the cell substrate 20 may further include a common electrode layer 23 located on the side of the second substrate 21 facing the liquid crystal layer 50, and a first prism structure layer 40 located on the side of the common electrode layer 23 facing the liquid crystal layer 50. It should be noted that the vacuum relative to the liquid crystal layer side of the common electrode layer 23, the second substrate 21, and the first prism structure layer 40 are all optically dense media. Although the materials are different, the refractive index and critical angle of the common electrode layer 23, the second substrate 21, and the first prism structure layer are somewhat different, but the difference is small and can be ignored in optical path simulation.

[0120] Light passes through the first polarizer 12 and the second polarizer to form polarized light, and is then inverted by the liquid crystal layer 50 to achieve display control. Exemplarily, the reflective layer 30 may include multiple reflective blocks corresponding to each sub-pixel region, forming a reflective area S22. The reflective layer 30 can also be used as a pixel electrode layer, with the reflective blocks serving as pixel electrodes for each sub-pixel region. The array substrate may also include multiple data lines and gate lines, which surround and form sub-pixel regions. The array substrate may also include thin-film transistors 14, with a thin-film transistor 14 disposed in each sub-pixel region. The thin-film transistor 14 includes a gate electrode, a source electrode, a drain electrode, and an active layer. The gate electrode is connected to the gate line, the source electrode is connected to the data line, the drain electrode is connected to the reflective block, and the active layer is formed between the source / drain electrode and the gate electrode. The reflective block can both reflect light and serve as a pixel electrode. Exemplarily, the reflective layer 30 may be made of an opaque metallic material.

[0121] For example, the first substrate 21 and the second substrate 22 can be made of glass, which can achieve better support. Alternatively, the first substrate 21 and the second substrate 22 can be made of organic materials, such as polyimide (PI), polyethylene terephthalate (PET), etc.

[0122] In this embodiment of the display panel, the first prism structure layer 40 is located on the side of the first substrate facing the liquid crystal layer, the first polarizer is located on the side of the first substrate away from the liquid crystal layer, the second prism structure layer 70 is located on the side of the second substrate facing the liquid crystal layer, and the second polarizer is located on the side of the second substrate away from the liquid crystal layer. This structure, relative to... Figure 12 The related technology, which places the prism structure layer on the polarizer, can reduce the risk of damage to the first prism structure layer 40 and the second prism structure layer 70. Moreover, compared to... Figure 12 The alignment accuracy of the first and second substrates in the display panel shown is higher than that of the polarizer, resulting in a lower risk of error.

[0123] Figure 20 This is a cross-sectional schematic diagram of a display panel according to an embodiment of the present disclosure. In one embodiment, referring to... Figure 20 As shown, the display panel also includes a sealing adhesive 80, which is located between the cell substrate 20 and the array substrate 10, and surrounds the first prism structure layer 40. The sealing adhesive 80, the cell substrate 20, and the array substrate 10 enclose a sealed space, within which the first prism structure layer 40 and the second prism structure layer 70 are located. This effectively prevents external damage, such as scratches caused by the polarizer and compression damage to the backlight film, thereby reducing the defect rate.

[0124] Another embodiment of this disclosure provides a display device including the display panel described in any embodiment of this disclosure. The display device employing the display panel of this disclosure can disrupt the total internal reflection condition of the first light ray X1 when it enters the liquid crystal layer 50 from the cell substrate 20 via a first prism structure layer 40. The first prism structure layer 40 refracts the first light ray X1 incident from the cell substrate 20 along a direction toward the reflective region S22, increasing the amount of light entering the first light ray X1 incident at a large angle. This allows for full utilization of ambient light, improving the display brightness of the display device in reflective mode, enhancing the display effect of the display device, and increasing product competitiveness.

[0125] The display device using the display panel of the present disclosure embodiment can scatter the second light rays incident vertically from the backlight module through the second prism structure layer disposed in the transmission area, so that part of the second light rays enter the reflection area on the periphery of the transmission area. The light rays emitted from the second prism structure layer are focused after reaching the first prism structure layer. The cooperation of the first prism structure layer and the second prism structure layer expands the light emission range, reduces the difference in emitted light rays between the transmission area and the reflection area, making the picture more uniform. At the same time, it can also reduce the emission angle of the scattered light rays, improve the brightness of the display device at the viewing angle, and achieve spectral narrowing, thereby improving the color gamut and color saturation of the display device.

[0126] For example, the display device provided in this disclosure embodiment may be any product or component with display and touch functions, such as a smartphone, wearable smartwatch, smart glasses, tablet computer, television, monitor, laptop computer, digital photo frame, navigator, in-vehicle display, e-book, biometric device such as smart skin device, soft robot and biomedical device.

[0127] The display panel and other components of the display device in the above embodiments can adopt various technical solutions that are now and will be known to those skilled in the art, and will not be described in detail here.

[0128] In the description of this specification, it should be understood that the terms "center," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this disclosure and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this disclosure.

[0129] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this disclosure, "multiple" means two or more, unless otherwise explicitly specified.

[0130] In this disclosure, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a communication connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this disclosure according to the specific circumstances.

[0131] In this disclosure, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0132] The foregoing disclosure provides many different implementations or examples for carrying out different structures of this disclosure. To simplify this disclosure, the components and arrangements of specific examples are described above. Of course, these are merely examples and are not intended to limit this disclosure. Furthermore, reference numerals and / or reference letters may be repeated in different examples; such repetition is for simplification and clarity and does not in itself indicate a relationship between the various implementations and / or arrangements discussed.

[0133] The above are merely specific embodiments of this disclosure, but the scope of protection of this disclosure is not limited thereto. Any person skilled in the art can easily conceive of various variations or substitutions within the technical scope disclosed in this disclosure, and these should all be included within the scope of protection of this disclosure. Therefore, the scope of protection of this disclosure should be determined by the scope of the claims.

Claims

1. A display panel, characterized in that, include: Array substrate; A cell substrate is disposed opposite to the array substrate, and a liquid crystal layer is disposed between the array substrate and the cell substrate. The array substrate and the cell substrate together define a plurality of sub-pixel regions. A reflective layer is disposed on the side of the array substrate facing the cell substrate, and the reflective layer includes a reflective area corresponding to the sub-pixel area; A transmissive layer is disposed on the side of the array substrate facing the cell substrate, the transmissive layer includes a transmissive region corresponding to the sub-pixel region, and a reflective region is disposed around the transmissive region; A first prism structure layer is disposed on the side of the cell substrate facing the array substrate. Light incident on the cell substrate includes a first ray with an incident angle greater than a preset angle. The first prism structure layer is used to refract the first ray incident on the cell substrate along a direction toward the reflective area, and to refract the first ray reflected by the reflective area along a direction toward the cell substrate. The first prism structure layer is disposed on the side of the cell substrate facing the liquid crystal layer. The surface of the first prism structure layer away from the cell substrate includes a plurality of first microprism structures. The first microprism structures protrude along a direction away from the cell substrate, and the protruding surfaces of the first microprism structures are curved. The refractive index of the first microprism structure layer is greater than the refractive index of the cell substrate. A second prism structure layer is located on the side of the transmission layer facing the cell substrate. The second prism structure layer is used to refract the second light rays passing through the transmission area in the direction towards the cell substrate, and the refraction angle of the refracted second light rays is greater than the incident angle. The orthographic projection of the exiting area corresponding to the refracted second light rays on the array substrate in the second direction is smaller than the size of the sub-pixel area in the second direction, where the second direction is the arrangement direction of sub-pixel areas of different colors. The second prism structure layer is located on the side of the first substrate closer to the liquid crystal layer. The preset angle is the angle at which the first light ray undergoes total internal reflection at the interface between the cell substrate and the liquid crystal layer when there is no first prism structure layer.

2. The display panel according to claim 1, characterized in that, The distance between the protruding surface of the first microprism structure and the substrate of the box gradually increases from the edge to the center.

3. The display panel according to claim 1, characterized in that, The center-to-center spacing of adjacent first microprism structures located in the same sub-pixel region is 500~600nm; and / or, the size of the first microprism structure in a first direction is 300~400nm, the first direction being perpendicular to the array substrate.

4. The display panel according to claim 1, characterized in that, The array substrate includes a backlight module, and the second light emitted from the backlight module passes through the transmission area and is then modulated by the first prism structure layer before being emitted.

5. The display panel according to claim 4, characterized in that, The surface of the second prism structure layer on the side away from the array substrate includes a plurality of second microprism structures, the second microprism structures protruding in a direction away from the array substrate, and the protruding surface of the second microprism structure is curved.

6. The display panel according to claim 5, characterized in that, The distance between the protruding surface of the second microprism structure and the array substrate gradually increases from the edge to the center.

7. The display panel according to claim 5, characterized in that, The first prism structure layer includes a first part and a second part. The orthographic projection of the first part on the array substrate coincides with the transmission region, and the orthographic projection of the second part on the array substrate coincides with the reflection region. The first microprism structure of the first part and the first microprism structure of the second part are the same; and / or, the second microprism structure of the second prism structure layer is the same as the first microprism structure of the first prism structure layer.

8. The display panel according to claim 5, characterized in that, The center-to-center spacing of adjacent second microprism structures located in the same sub-pixel region is 500~600nm; and / or, the size of the second microprism structure in a first direction is 300~400nm, the first direction being perpendicular to the array substrate.

9. The display panel according to claim 5, characterized in that, Both the first prism structure layer and the second prism structure layer are distributed Bragg reflection microprisms. The first prism structure layer and the second prism structure layer each include multiple stacked arc-shaped film layers, and the refractive indices of adjacent arc-shaped film layers are different.

10. The display panel according to claim 4, characterized in that, The distance between the cell substrate and the transmissive layer in the first direction is 4~6μm, and the distance between the cell substrate and the reflective layer in the first direction is half the distance between the cell substrate and the transmissive layer in the first direction. The first direction is perpendicular to the array substrate.

11. The display panel according to claim 4, characterized in that, The array substrate further includes a first substrate and a first polarizer, the first polarizer being located between the backlight module and the first substrate, the backlight module being located on the side of the first substrate away from the liquid crystal layer; the cell substrate includes a second substrate and a second polarizer, the second polarizer being located on the side of the second substrate away from the liquid crystal layer, and the first prism structure layer being located on the side of the second substrate close to the liquid crystal layer.

12. The display panel according to claim 1, characterized in that, It also includes a sealing adhesive, which is located between the pair substrate and the array substrate and is disposed around the first prism structure layer.

13. A display device, characterized in that, The display panel includes any one of claims 1-12.

Images