Semi-transmission semi-reflection spatial light modulator and manufacturing method thereof

Abstract

The present invention relates to a semi-transmission semi-reflective spatial light modulator for enhancing the visual properties of a display device to make it paper-like with high resolution and high brightness. The modulator comprises a front surface configured to receive light from a primary light source and modulate the light into visual information for display, a back surface opposite the front surface, and a stack of layers between the two surfaces. The stack of layers can include a polarizing layer, an anisotropic diffusion film, a liquid crystal layer, thin film transistor elements, and a micro-reflective structure electrode layer. The thin film transistor elements can apply an electric to the liquid crystal layer to enable addressable spatial light modulation to address the inherent problems of the semi-transmission semi-reflective spatial light modulator. The combination of these elements results in a semi-transmission semi-reflective spatial light modulator that is paper-like with high resolution and high brightness. The present invention also provides a method of manufacturing a semi-transmission semi-reflective spatial light modulator.

Description

[0001] This application is a divisional application of Chinese Patent Application No. 202411904532.8, filed on December 23, 2024, entitled "Semi-transmissive and semi-reflective spatial light modulator with enhanced light diffusion and method thereof". Technical Field

[0002] This disclosure relates generally to display technology, and more specifically to the design and manufacture of a transmissive, transflective spatial light modulator for enhancing light diffusion in a display device. Background Technology

[0003] Reflective displays are a type of display technology that uses ambient light to illuminate the screen, reducing power consumption and improving visibility in bright environments. However, traditional reflective displays face challenges in achieving paper-like quality, high resolution, and high brightness. The reflective nature of these displays often results in a metallic appearance, which is undesirable for applications requiring a paper-like display, such as e-readers. Furthermore, achieving high resolution and brightness is a challenge due to the inherent limitations of reflective display technology. Summary of the Invention

[0004] This subject matter discloses a combination of a microreflective structure (“MRS”) electrode layer and a diffusion film within a semi-transmissive, semi-reflective spatial light modulator for enhanced display brightness and light diffusion. Inherent problems with reflective displays may limit their commercial viability and applications. The metallic appearance of these displays may be detrimental to a paper-like reading experience, which is a critical requirement for devices such as e-readers. Furthermore, achieving high resolution and brightness in reflective displays can be a significant challenge. These limitations may hinder the widespread adoption of reflective displays in commercial products, despite their potential advantages in terms of power consumption and visibility in bright environments.

[0005] The embodiments described herein address the aforementioned and other drawbacks by integrating and commercializing several advances in materials science to enhance the properties of reflective liquid crystal displays (RLCDs). Some embodiments may involve a combination of MRS and a diffusion film to produce a paper-like display with high resolution and / or high brightness. For example, the combination of MRS and a diffusion film in a display may result in a synergistic effect of improved paper-like appearance of the display, facilitate viewing the display from an improved viewing angle, and / or have other effects. With a partial increase in the off-axis viewing angle and / or a wider viewing angle, the display can appear brighter. As a non-limiting example, the viewing angle of the display may be defined by a maximum angle relative to the display at which a user of the display can view the display with acceptable quality. The display may be able to capture, reflect, and / or be illuminated by light from a wider range of angles relative to the display. The combination of these components that diffuse light at different points in a semi-transmissive, semi-reflective spatial light modulator can provide a synergistic effect, resulting in a display superior to each component alone.

[0006] Some implementations may include methods for quantifying improvements in display quality through video analysis and / or other methods using luminance values. As a non-limiting example, a goniometer and integrating sphere can be used to quantify the improvements to measure the luminance distribution at different illumination source angles. This innovative approach to improving reflective LCDs may have the potential to overcome existing limitations and make these displays commercially viable.

[0007] One aspect of this disclosure relates to a transmissive spatial light modulator. The transmissive spatial light modulator may include a front surface, a rear surface, a layer stack, and / or other components. The front surface may be configured to receive light from a main light source for modulation, and light that has been reflected and modulated into visual information for display passes through the front surface on its way to the display surface. The main light source may be ambient light and / or another light source. The rear surface may be opposite the front surface. The layer stack may be located between the front surface and the rear surface. The layer stack may include a polarizing layer. The layer stack may include an anisotropic diffusion film disposed between the polarizing layer and the rear surface. The layer stack may include a liquid crystal layer disposed between the anisotropic diffusion film and the rear surface. The layer stack may include a thin-film transistor element disposed between the liquid crystal layer and the rear surface. The thin-film transistor element may be configured to apply electricity to the liquid crystal layer to achieve addressable spatial light modulation through the liquid crystal layer. The layer stack may include a microreflective structure electrode layer disposed between the thin-film transistor element and the back surface. In some embodiments, the microreflective structure electrode may be etched onto the back surface. In some embodiments, the back surface may be the final layer and / or the bottom layer of the RLCD.

[0008] According to some implementations, the thin-film transistor element may be adjacent to the liquid crystal layer.

[0009] According to some implementations, the microreflective structure electrode layer may be adjacent to the thin-film transistor element.

[0010] According to some embodiments, the microreflective structure electrode can have a random and / or quasi-random shape. For example, the random shape can be generated, determined, and / or selected using an entropy source. For example, the quasi-random shape can be generated using a non-random algorithm (e.g., using a seed and / or another method). In some embodiments, the determination of the quasi-random shape can appear to be random.

[0011] According to some implementation schemes, the size of the microreflective structure electrode can be between about 5 micrometers and about 7 micrometers, between about 4 micrometers and about 10 micrometers, and / or in other ranges less than about 50 micrometers.

[0012] In some embodiments, the back surface may include a polarizer. According to some specific embodiments, the layer stack may further include a diffused optically transparent adhesive layer located between the anisotropic diffusion film and the polarizing layer. According to some embodiments, the polarizer may be an achromatic polarizer.

[0013] According to some implementations, the layer stack may include an anti-glare matte surface film forming the front surface.

[0014] Another aspect of this disclosure relates to a display device. The display device may include a display surface, a transmissive spatial light modulator, and / or other components. The transmissive spatial light modulator may include a front surface, a rear surface, a layer stack, and / or other components. The front surface may be configured to receive light from a main light source for modulation, and light that has been reflected and modulated into visual information for display passes through the front surface on its way to the display surface. The main light source may be ambient light. The rear surface may be opposite the front surface. The layer stack may be located between the front surface and the rear surface. The layer stack may include a polarizing layer. The layer stack may include an anisotropic diffusion film disposed between the polarizing layer and the rear surface. The layer stack may include a liquid crystal layer disposed between the anisotropic diffusion film and the rear surface. The layer stack may include a thin-film transistor element disposed between the liquid crystal layer and the rear surface. The thin-film transistor element may be configured to apply electricity to the liquid crystal layer to achieve addressable spatial light modulation through the liquid crystal layer. The layer stack may include a microreflective electrode layer disposed between the thin-film transistor element and the rear surface. A transmissive spatial light modulator may be disposed in the display device to receive light from the light source, modulate this light to generate visual information, and reflect the visual information toward the display surface for display.

[0015] Another aspect of this disclosure relates to a method for manufacturing a transmissive, transflective spatial light modulator. The method may include preparing a front surface configured to receive light from a main light source for modulation, and light that has been reflected and modulated into visual information for display passes through the front surface on its way to a display surface. The main light source may be ambient light. The method may include preparing a rear surface opposite the front surface. The method may include assembling a layer stack between the front and rear surfaces. Assembling the layer stack may include placing a polarizing layer; disposing an anisotropic diffusion film between the polarizing layer and the rear surface; disposing a liquid crystal layer between the anisotropic diffusion film and the rear surface; disposing a thin-film transistor element between the liquid crystal layer and the rear surface; and disposing a microreflective structure electrode layer between the thin-film transistor element and the rear surface. The thin-film transistor element may be configured to apply electricity to the liquid crystal layer to achieve addressable spatial light modulation through the liquid crystal layer. The method may include sealing the assembled layer stack between the front and rear surfaces.

[0016] These and other features and characteristics of the invention, as well as the combination of the functionality of the methods of operation and related structural elements, and the economy of components and manufacture, will become more apparent when considered in conjunction with the accompanying drawings, all of which form part of this specification, wherein the same reference numerals denote corresponding components in the various figures. However, it should be clearly understood that the drawings are for illustrative and descriptive purposes only and are not intended to be construed as limiting the invention. As used in the specification and claims, unless the context clearly indicates otherwise, the singular forms “a,” “an,” and “described” include plural indicators. Attached Figure Description

[0017] Figure 1 An exemplary layer stack for forming a transmissive, transflective spatial light modulator according to some implementation schemes is shown.

[0018] Figure 2 An exemplary display device is shown that implements a semi-transmissive and semi-reflective spatial light modulator according to some embodiments.

[0019] Figure 3 A method for manufacturing a transmissive, transflective spatial light modulator according to some implementation schemes is demonstrated. Detailed Implementation

[0020] Some implementations can address certain inherent problems of reflective liquid crystal displays (LCDs), thereby transforming them into high-resolution, high-brightness, and paper-like displays. Inherent problems of reflective LCDs can include issues such as parallax, insufficient brightness, and low resolution. By addressing these problems, LCDs can be transformed into high-resolution and high-brightness displays. The goal is to make the reflective LCD mimic the appearance of paper, which can make it more attractive, more user-friendly, and / or more comfortable to read. This may involve making the LCD white enough and sufficiently paper-like to be more appealing to the eyes. By mimicking the appearance of paper, LCDs can become more user-friendly and more comfortable to read.

[0021] Some implementations are valuable due to their unique characteristics that distinguish them from other reflective display technologies. For example, another reflective display technology, electronic ink, is known to have a slow refresh rate. For instance, electronic ink may be slower at refreshing a display compared to some reflective LCD implementations. In contrast, some reflective LCD implementations can offer faster refresh rates and may be a more efficient alternative. Unique characteristics of some implementations may include their high resolution and brightness, which can differentiate them from other reflective display technologies.

[0022] Some implementations may involve making specific modifications to reflective LCDs to address their inherent problems. These modifications can be made one at a time, each contributing to an overall improvement in the LCD. Specific modifications may include changing the structure or composition of the LCD to improve its brightness and resolution. This approach ensures that each problem is thoroughly addressed, thus contributing to an overall improvement in the LCD. In some implementations, OLED displays can be used to replace LCDs. OLEDs are known for their high contrast and wide viewing angles, which can potentially enhance the brightness of the display system.

[0023] In some implementations, different backlight technologies can be used to enhance the brightness of the display system. For example, Full Array Local Dimming (FALD) can be used to control the backlight in different areas of the display, thereby enhancing contrast and brightness. In some implementations, High Dynamic Range (HDR) technology can be used to enhance the brightness and contrast of the display system. HDR can provide a higher level of contrast between bright and dark images on the screen, resulting in more realistic images. In other implementations, different types of diffusion films can be used in combination with the display to enhance brightness. For example, microlens array films can be used to direct more light toward the viewer, thereby enhancing perceived brightness. Finally, in some implementations, software solutions can be used to enhance brightness. For example, image processing algorithms can be used to adjust the brightness and contrast of the display in real time.

[0024] Some implementations may involve combinations of various components to achieve the desired effect. For example, the combination of MRS and a diffusion film can be a key aspect of some implementations. This combination can produce a synergistic effect, making the transmissive spatial light modulator perform better than if it included only one of these components. When deployed individually and / or in other combinations of components, the improvement can be greater than the sum of the individual components. The various components can include different materials or technologies that enhance the performance of the spatial light modulator when combined. This means that the combined effect of these components can be greater than the sum of their individual effects, resulting in an improvement in the performance of the spatial light modulator.

[0025] Some implementations may also involve quantifying improvements made to the transmissive spatial light modulator. This can be done through video analysis, using a goniometer and integrating sphere, and / or other methods. As a non-limiting example, video analysis can be performed to compare the luminance values ​​of the transmissive spatial light modulator before and after modification. This comparison can provide a clear indication of the improvements made to the transmissive spatial light modulator. Video analysis can be used as a tool for this measurement, thus providing a visual comparison of the transmissive spatial light modulator before and after modification. By comparing the luminance values ​​before and after modification, the project team can clearly see the improvements made. The process of quantifying the improvements may involve measuring certain parameters of the transmissive spatial light modulator, such as its luminance or resolution. As a non-limiting example, a goniometer and integrating sphere can be used to measure the distribution at different illumination source angles.

[0026] Figure 1 An exemplary layer stack 100 forming a transmissive spatial light modulator according to some embodiments is shown. The term "transmissive" can refer to the modulator's ability to transmit and reflect light, a feature that enhances the brightness and viewing angle of a display. Figure 1 As shown, the layer stack 100 may include one or more of the following: a front surface 102, a rear surface 104, an anisotropic diffusion film 106, a polarizing layer 108, a liquid crystal layer 110, a thin-film transistor element 112, and a microreflective structure electrode layer 114 and / or other components. The specific arrangement of these layers can be designed to optimize light modulation and the quality of the resulting display.

[0027] The front surface 102 can be configured to receive light from a main light source for modulation. This main light source can be ambient light or some other light source directed onto the front surface 102. Light from this source can be directed toward the front surface 102, where it begins its journey through the stacked layers. After being reflected and modulated into visual information for display, the light can travel through the front surface 102 on its way to the display surface. The display surface can be any surface suitable for displaying visual information, such as a screen or projection surface. The modulated light can carry the visual information to this display surface, thereby creating the final image.

[0028] Opposite to the front surface 102 is the rear surface 104. The rear surface 104 can be made of a durable material to provide structural stability for the stack. The rear surface 104 serves as the base for other layers stacked on top of it. This arrangement ensures that the layers are properly aligned and secured. Proper alignment of the layers allows the modulator to function correctly, as misalignment can lead to distortion or loss of visual information.

[0029] A polarizing layer 108 can be disposed between the front surface 102 and the rear surface 104. The positioning of the polarizing layer 108 immediately following the front surface 102 ensures that diffused light is immediately polarized, thereby optimizing the modulation process. The polarizing layer 108 can be used to polarize light passing through it, ensuring that only light with the correct polarization can pass through to the next layer. This selective passage of polarized light enables the modulator to create detailed and high-quality visual information.

[0030] An anisotropic diffusion film 106 can be positioned between the polarizing layer 108 and the back surface 104. The term "anisotropic" can refer to a direction-dependent characteristic, meaning that the anisotropic diffusion film 106 can scatter light in a specific direction. This controlled light scattering can enhance the brightness and viewing angle of the display. The direction of light scattering can be controlled by adjusting the characteristics of the anisotropic diffusion film 106. This controlled light diffusion can ensure that visual information is displayed with high definition and brightness, regardless of the viewing angle. As a non-limiting example, the anisotropic diffusion film 106 can be adhered to the bottom of the polarizing layer 108. As a non-limiting example, the anisotropic diffusion film 106 can be protected by the polarizing layer 108.

[0031] A liquid crystal layer 110 may be disposed between the anisotropic diffusion film 106 and the rear surface 104. The liquid crystal layer 110 may be the site where actual light modulation occurs. The liquid crystal in this layer can be manipulated by applying an electric field to change the polarization of light passing through it. In some embodiments, the liquid crystal layer 110 may include a color filter glass, a polarizer, a polarizing film, liquid crystal, and / or other components. In some embodiments, the color filter glass may be thinned to minimize the distance from the anisotropic diffusion film to the microreflective structure electrode layer 114 and / or the rear surface 104. As a non-limiting example, the polarizing layer may include a highly polarized conversion film (APCF). As a non-limiting example, reducing the distance from the anisotropic diffusion film to the microreflective structure electrode layer 114 and / or the rear surface 104 can reduce blurring.

[0032] A thin-film transistor (TFT) element 112, which can be disposed between the liquid crystal layer 110 and the rear surface 104, can apply electricity to the liquid crystal layer 110 to achieve addressable spatial light modulation through the liquid crystal layer 110. The TFT element 112 can control the application of electricity to the liquid crystal layer 110. By controlling the electric field, the TFT element 112 can control the modulation of light through the liquid crystal layer 110, thereby creating the desired visual information.

[0033] A microreflective electrode layer 114 can be disposed between the thin-film transistor element 112 and the rear surface 104. The microreflective electrode layer 114 can be composed of tiny reflective electrodes that reflect modulated light back to the front surface 102. This reflection enhances the brightness and viewing angle of the display because it ensures that the modulated light is guided toward the display surface, thereby creating the final image. The microreflective electrode layer 114 can diffuse the light reaching it. The combination of the anisotropic diffusion film 106 and the microreflective electrode layer 114 can produce a synergistic effect, resulting in a high-quality, bright, and wide-viewing-angle display.

[0034] Figure 2 An exemplary display device 200 is shown, which implements a transmissive spatial light modulator according to some embodiments. Figure 2 As shown, the display device 200 may include one or more of the following: a screen 202, a light source 204, a modulator 206, a controller 208, a power supply 210, a housing 212, and / or other components. The display device 200 may be a device such as a television, computer monitor, smartphone, or tablet computer. The display device 200 can be used in various environments, such as in homes, offices, schools, or public places.

[0035] The screen 202 of the display device 200 can be a flat panel display, such as a liquid crystal display (LCD), an organic light-emitting diode (OLED) display, or any other type of display capable of displaying images. The screen 202 can be a component that visually presents information to a user. The screen 202 can be capable of displaying color or black-and-white images. The screen 202 can be capable of displaying images at various resolutions. The screen 202 can be capable of displaying images with a high level of detail, such as high-definition or ultra-high-definition images. The screen 202 can be touch-sensitive, allowing a user to interact with the display device 200 by touching the screen 202. The screen 202 can detect the user's touch and translate it into commands or inputs for the display device 200.

[0036] The light source 204 of the display device 200 can be any type of light source capable of illuminating the screen 202. The light source 204 can be ambient light and / or any other component providing light to the screen 202. In some embodiments, the display device 200 may include a backlight 205. The backlight 205 can be the backlight of the modulator 206. The backlight 205 may be positioned behind the screen 202.

[0037] The modulator 206 of the display device 200 may be a spatial light modulator that modulates light from the light source 204 to form an image on the screen 202. The modulator 206 may be a component that controls the light from the light source 204 to create an image. The modulator 206 may include a layer stack 100 forming a transmissive, transflective spatial light modulator, such as... Figure 1 As described. Modulator 206 may be addressable to selectively reflect light from light source 204 back to screen 202 across an array of individual locations.

[0038] The controller 208 of the display device 200 can be a microcontroller, a microprocessor, or any other type of controller capable of controlling the operation of the display device 200. The controller 208 can be a component that manages the operation of the display device 200. The controller 208 can be capable of controlling the light source 204, the modulator 206, and other components of the display device 200. The controller 208 can be capable of sending commands to the backlight 205, the modulator 206, and / or other components to control the display of images on the screen 202. The controller 208 can be capable of receiving input from a user, a computer, or other devices, and can be capable of outputting signals to control the operation of the display device 200. The controller 208 can be capable of processing input from a user or a computer and converting it into commands for the display device 200.

[0039] The power supply 210 of the display device 200 can be a battery, a power adapter, or any other type of power source capable of supplying power to the display device 200. The power supply 210 can be a component that provides power to the display device 200. The power supply 210 can be capable of supplying power at various voltages and currents. The power supply 210 can be capable of supplying power continuously and / or intermittently. The power supply 210 can be capable of providing a stable power supply to the display device 200, or it can be capable of providing power in bursts or pulses.

[0040] The housing 212 of the display device 200 can be a shell encapsulating other components of the display device 200. The housing 212 can be a component that protects other components of the display device 200 from damage. The housing 212 can be made of plastic, metal, or any other material capable of protecting the components of the display device 200. The housing 212 can be a robust and durable component that can withstand impacts and other forms of physical stress. The housing 212 can be designed to allow access to the screen 202 and can include openings for connectors, switches, and other components of the display device 200. The housing 212 can be designed to allow easy access to the screen 202 for viewing and interaction, while also providing openings for connecting cables, operating switches, and using other components.

[0041] Figure 3 A method 300 for manufacturing a transmissive spatial light modulator according to some embodiments is shown. This transmissive spatial light modulator may include a combination of... Figure 1 The layer stack is described as 100. For illustrative purposes, the steps of example method 300 are described herein as occurring sequentially or linearly. However, multiple instances of example method 300 can occur in parallel.

[0042] At step 302, a front surface may be prepared. This front surface may be the initial point of contact for light from the main light source. In some embodiments, preparing the front surface may include thinning the glass sheet. In some embodiments, preparing the front surface may include applying an anti-glare film to the glass sheet using an adhesive. Preparing the front surface may involve cleaning and smoothing processes to ensure optimal light transmission. The main light source can be any light source, such as an LED or a laser.

[0043] At step 304, a rear surface may be prepared. This rear surface may be the final point of contact for the modulated light before it is reflected back to the front surface. Preparing the rear surface may involve a process similar to that used in preparing the front surface. In some embodiments, preparing the rear surface may include depositing a metal vapor phase onto a thin-film transistor (TFT). This rear surface may be positioned relative to the front surface. Positioning of the rear surface relative to the front surface allows for efficient reflection and modulation of light.

[0044] At step 306, a layer stack can be assembled between the front and rear surfaces. Assembling the layer stack can involve placing each layer in a specific order. The specific order of the layers can be determined by the desired characteristics of the modulated light. This layer stack may include a polarizing layer, an anisotropic diffusion film, a liquid crystal layer, a thin-film transistor element, and a microreflective structure electrode layer. Each of these layers can contribute to the modulation of light.

[0045] At step 308, a polarizing layer can be placed as the first layer in the stack. The polarizing layer is responsible for polarizing the light. Polarizing light can involve aligning the light wave in a specific direction. This layer is responsible for polarizing the light passing through it. The polarized light can then pass through subsequent layers in the stack. This polarizing layer can be positioned closest to the front surface. Positioning the polarizing layer closest to the front surface allows it to interact with light from the main light source before any other layers.

[0046] At step 310, an anisotropic diffusion film can be disposed between the polarizing layer and the back surface. The anisotropic diffusion film is responsible for diffusing light from the main light source. Light diffusion can involve spreading light over a larger area.

[0047] At step 312, a liquid crystal layer may be disposed between the anisotropic diffusion film and the rear surface. The liquid crystal layer is responsible for modulating polarized light. Modulation of polarized light can involve altering its characteristics, such as its intensity or direction. This layer is responsible for modulating the polarized light.

[0048] At step 314, a thin-film transistor (TFT) element can be disposed between the liquid crystal layer and the rear surface. The TFT element is responsible for applying electricity to the liquid crystal layer. Applying electricity to the liquid crystal layer alters its properties, thereby modulating light. This element can be configured to apply electricity to the liquid crystal layer to achieve addressable spatial light modulation through the liquid crystal layer.

[0049] At step 316, a microreflective electrode layer may be disposed between the thin-film transistor element and the rear surface. The microreflective electrode layer may be responsible for reflecting modulated light back to the front surface. The reflection of the modulated light may involve changing its direction so that it travels back to the front surface. In some embodiments, step 316 may include etching the microreflective electrode onto the rear surface.

[0050] At step 318, the encapsulated layer stack can be sealed between the front and rear surfaces to complete the fabrication of the transflective spatial light modulator 300. Sealing the layer stack may involve encapsulating layers to protect it from external factors. The completion of the fabrication of the transflective spatial light modulator may involve final inspection and quality control processes.

[0051] These implementation schemes can also be applied to other problems where enhanced brightness is desired, such as automotive displays, outdoor signage, or any other display systems where visibility may be impaired due to external lighting conditions.

[0052] Although the invention has been described in detail based on embodiments currently considered to be the most practical and preferred for illustrative purposes, it should be understood that such details are for that purpose only, and the technology is not limited to the disclosed embodiments, but rather is intended to cover modifications and equivalent arrangements within the spirit and scope of the appended claims. For example, it should be understood that the invention contemplates that one or more features of any embodiment can be combined with one or more features of any other embodiment to the extent possible.

Claims

1. A transmissive spatial light modulator, the transmissive spatial light modulator comprising: A front surface, which is configured to receive light from a main light source for modulation, and light that has been reflected and modulated into visual information for display passes through the front surface on its way to the display surface; The rear surface opposite to the front surface; as well as A layer stack located between the front surface and the rear surface, wherein the layer stack comprises: Liquid crystal layer; A thin-film transistor element disposed between the liquid crystal layer and the rear surface, wherein the thin-film transistor element is configured to apply electricity to the liquid crystal layer to achieve addressable spatial light modulation through the liquid crystal layer; and A microreflective electrode layer is disposed between the thin-film transistor element and the rear surface.

2. The semi-transmissive, semi-reflective spatial light modulator according to claim 1, wherein, The layer stack also includes a polarizing layer disposed between the front surface and the liquid crystal layer.

3. The semi-transmissive, semi-reflective spatial light modulator according to claim 2, wherein, The polarization layer is an achromatic polarizer.

4. The semi-transmissive, semi-reflective spatial light modulator according to claim 1, wherein, The layer stack also includes an anisotropic diffusion film disposed between the front surface and the liquid crystal layer.

5. The semi-transmissive, semi-reflective spatial light modulator according to claim 4, wherein, The anisotropic diffusion film can scatter light in a specific direction, wherein the scattering of light can enhance the brightness and viewing angle of the information displayed on the display surface.

6. The semi-transmissive, semi-reflective spatial light modulator according to claim 1, wherein, The microreflective structure electrode layer is adjacent to the thin-film transistor element.

7. The semi-transmissive, semi-reflective spatial light modulator according to claim 1, wherein, The microreflective structure electrode layer has a random and / or quasi-random shape.

8. The semi-transmissive and semi-reflective spatial light modulator according to claim 1, wherein the size of the micro-reflective structure electrode is between about 5 micrometers and about 7 micrometers.

9. The semi-transparent, semi-reflective spatial light modulator of claim 1, wherein the layer stack further comprises an anti-glare matte surface film forming the front surface.

10. The transmissive spatial light modulator of claim 1, wherein the thin-film transistor element is adjacent to the liquid crystal layer.

11. A method for manufacturing a transmissive, transflective spatial light modulator, the method comprising: Prepare a front surface, which is configured to receive light from the main light source for modulation, and light that has been reflected and modulated into visual information for display passes through the front surface on its way to the display surface; Prepare a rear surface, which is opposite to the front surface; as well as Assembling a layer stack between the front surface and the rear surface, wherein assembling the layer stack includes: Place the liquid crystal layer; A thin-film transistor element is placed between the liquid crystal layer and the rear surface, wherein the thin-film transistor element is configured to apply electricity to the liquid crystal layer to achieve addressable spatial light modulation through the liquid crystal layer; and The micro-reflective structure electrode layer is placed between the thin-film transistor element and the rear surface.

12. The method according to claim 11, wherein, The method further includes: The polarizing layer is placed between the front surface and the liquid crystal layer.

13. The method according to claim 12, wherein, The polarization layer is an achromatic polarizer.

14. The method according to claim 11, wherein, The method further includes: An anisotropic diffusion film is placed between the front surface and the liquid crystal layer.

15. The method according to claim 14, wherein, The anisotropic diffusion film can scatter light in a specific direction, wherein the scattering of light can enhance the brightness and viewing angle of the information displayed on the display surface.

16. The method according to claim 11, wherein, The microreflective structure electrode layer is adjacent to the thin-film transistor element.

17. The method according to claim 11, wherein, The microreflective structure electrode layer has a random and / or quasi-random shape.

18. The method of claim 11, wherein the size of the microreflective structure electrode is between about 5 micrometers and about 7 micrometers.

19. The method of claim 11, wherein the layer stack further comprises an anti-glare matte surface film forming the front surface.

20. The method of claim 11, wherein the thin-film transistor element is adjacent to the liquid crystal layer.

Images