Transflective spatial light modulator with enhanced diffusion of light and method of manufacture of the same

Abstract

To provide a transflective spatial light modulator for enhancing visual characteristics of a display device, making them paper-like, high-resolution and high-brightness.SOLUTION: The modulator includes a front surface configured to receive light from a primary source and modulate it into visual information for display. The modulator includes a rear surface opposite the front surface and a stack of layers between the two surfaces. The stack of layers may include a polarizing layer, an anisotropic diffuser film, a liquid crystal layer, a thin film transistor element, and a layer of micro-reflective structure electrodes. The thin film transistor element applies electricity to the liquid crystal layer to effectuate addressable spatial light modulation.EFFECT: The combination of these elements results in a transflective spatial light modulator that is paper-like and has high resolution and high brightness.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present disclosure generally relates to display technology, and more specifically, to the design and manufacture of a transflective spatial light modulator for enhancing light diffusion in a display device.

Background Art

[0002] A reflective display is a type of display technology that uses ambient light to illuminate the display, reducing power consumption and improving visibility in bright environments. However, conventional reflective displays have faced challenges in achieving paper-like quality, high resolution, and high brightness. The reflective nature of these displays often results in a metallic-like appearance, which is not ideal for applications that require a paper-like display, such as electronic reading devices. Additionally, achieving high resolution and high brightness is a significant challenge due to the inherent limitations of reflective display technology.

Summary of the Invention

[0003] The disclosure of the present subject matter provides a combination of a layer of micro-reflection structure ("MRS") electrodes and a diffuser film within a transflective spatial light modulator to enhance the brightness and light diffusion of a display. The inherent problems of reflective displays can limit their commercial viability and applications. The metallic-like appearance of these displays may not promote a paper-like reading experience, which can be an important requirement for devices such as electronic reading devices. Additionally, achieving high resolution and high brightness in a reflective display can be a significant challenge. These limitations can prevent the widespread adoption of reflective displays in commercial products, despite their potential advantages in terms of power consumption and visibility in bright environments.

[0004] The embodiments described herein address the aforementioned drawbacks and other drawbacks by providing the integration and commercialization of several materials science advancements to enhance the characteristics of reflective liquid crystal displays (RLCDs). Some embodiments may involve a combination of MRS and diffuser films to create a paper-like, high-resolution, and / or high-brightness display. For example, the combination of MRS and diffuser films in a display can result in a synergistic effect that improves the paper-like appearance of the display, facilitates viewing of the display from improved viewing angles, and / or has other effects. The display can appear brighter in off-axis viewing angles and / or increased portions of wider viewing angles. As a non-limiting example, the viewing angle of a display can be defined by the maximum angle with respect to the display at which a user of the display can view the display with acceptable quality. The display can be capable of capturing light from a wider range of angles with respect to the display, reflecting light, and / or being illuminated by light. The combination of these components that diffuse light at different points within a transflective spatial light modulator can provide a synergistic effect, resulting in a display that is superior to each component alone.

[0005] Some embodiments may include methods for quantifying improvements in display quality through video analysis of luminance values and / or other methods. As a non-limiting example, the improvements can be quantified using a goniometer and an integrating sphere to measure luminance distributions at different angles of different light sources. Such innovative approaches to improving reflective LCDs have the potential to overcome existing limitations and make these displays commercially viable.

[0006] One aspect of the present disclosure relates to a transflective spatial light modulator. The transflective spatial light modulator may include a front surface, a rear surface, a stack of layers, and / or other components. The front surface may be configured to receive light from a primary light source for modulation and reflect the light so that the modulated light for visual information for display passes through on its way to the display surface. The primary light source may be ambient light and / or another supply source. The rear surface may be on the opposite side of the front surface. The stack of layers may be between the front surface and the rear surface. The stack of layers may include a polarization layer. The stack of layers may include an anisotropic diffusion film disposed between the polarization layer and the rear surface. The stack of layers may include a liquid crystal layer disposed between the anisotropic diffusion film and the rear surface. The stack of layers 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 by the liquid crystal layer. The stack of layers may include a layer of micro-reflective structure electrodes disposed between the thin film transistor element and the rear surface. In some embodiments, the micro-reflective structure electrodes may be etched on the rear surface. In some embodiments, the rear surface may be the final layer and / or the bottom layer of the RLCD.

[0007] According to some embodiments, the thin film transistor element may be adjacent to the liquid crystal layer.

[0008] According to some embodiments, the layer of micro-reflective structure electrodes may be adjacent to the thin film transistor element.

[0009] According to some embodiments, the micro-reflective structure electrodes may have a random shape and / or a pseudo-random shape. For example, the random shape may be generated, determined, and / or selected using a source of entropy. For example, the pseudo-random shape may be generated using a non-random algorithm (e.g., using a seed and / or another method). In some embodiments, the determination of the pseudo-random shape may appear to be random.

[0010] According to some embodiments, the micro-reflective structure electrode may have a size within other ranges of about 5 micrometers to about 7 micrometers, about 4 micrometers to about 10 micrometers, and / or less than about 50 micrometers.

[0011] In some embodiments, the rear surface may include a polarizer. According to some embodiments, the stack of layers may further include a diffusive and optically transparent adhesive layer between the anisotropic diffusion film and the polarizer. According to some embodiments, the polarizer may be an achromatic polarizer.

[0012] According to some embodiments, the stack of layers may include an anti-glare or matte film that forms the front surface.

[0013] Another aspect of the present disclosure relates to a display device. The display device may include a display surface, a transflective spatial light modulator, and / or other components. The transflective spatial light modulator may include a front surface, a rear surface, a stack of layers, and / or other components. The front surface may be configured to receive light from a primary light source for modulation and reflect the modulated light towards the display surface as visual information for display to pass through on the way. The primary light source may be ambient light. The rear surface may be on the opposite side of the front surface. The stack of layers may be between the front surface and the rear surface. The stack of layers may include a polarizing layer. The stack of layers may include an anisotropic diffusion film disposed between the polarizing layer and the rear surface. The stack of layers may include a liquid crystal layer disposed between the anisotropic diffusion film and the rear surface. The stack of layers 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 by the liquid crystal layer. The stack of layers may include a layer of micro-reflective structure electrodes disposed between the thin film transistor element and the rear surface. The transflective spatial light modulator may be disposed within the display device to receive light from a light source, modulate such light to generate visual information, and reflect the visual information towards the display surface for display.

[0014] Yet another aspect of the present disclosure relates to a method for manufacturing a transflective spatial light modulator. The method may include fabricating a front surface configured to receive light from a primary light source at the front surface for modulation and reflect the light such that the modulated light, which is visual information for display, passes through on its way toward the display surface. The primary light source may be ambient light. The method may include fabricating a rear surface opposite the front surface. The method may include assembling a stack of layers between the front surface and the rear surface. Assembling the stack of layers may include installing 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 layer of microreflective structure electrodes 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 by the liquid crystal layer. The method may include sealing the assembled stack of layers between the front surface and the rear surface.

[0015] These and other features and characteristics of the present technology, as well as the operating methods and functions of the related elements of the structure, and the combination of components and the economics of manufacture, will become more apparent upon consideration of the following description and the appended claims with reference to the accompanying drawings, all of which form a part of this specification, and like reference numerals designate corresponding parts in the various drawings. However, it should be expressly understood that the drawings are for the purpose of illustration and description only and are not intended to define the limits of the present invention. As used in this specification and the appended claims, the singular forms “a,” “an,” and “the” include plural referents unless the context clearly dictates otherwise. BRIEF DESCRIPTION OF THE DRAWINGS

[0016]

Figure 1

Figure 2

Figure 3

DETAILED DESCRIPTION OF THE INVENTION

[0017] Some embodiments can address certain problems inherent in reflective liquid crystal displays (LCDs) and convert them to high resolution, high brightness, and paper-like displays. Problems inherent in reflective LCDs can include problems such as parallax, insufficient brightness, and low resolution. By addressing these problems, the LCD can be converted to a high resolution and high brightness display. The goal is to mimic the appearance of paper on the reflective LCD, which can make it more attractive, easier to use, and / or easier to read. This may involve making the LCD white enough and paper-like enough to be more visually appealing. By mimicking the appearance of paper, the LCD can become easier to use and read.

[0018] Some embodiments may have significant value 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 example, electronic ink may have a slower display refresh compared to the reflective LCDs of some embodiments. In contrast, the reflective LCDs of some embodiments can exhibit a faster refresh rate and can be a more efficient alternative. The unique characteristics of some embodiments can include their high resolution and high brightness, which can distinguish them from other reflective display technologies.

[0019] Some embodiments may involve making specific modifications to a reflective LCD to address their particular problems. These modifications can be added one at a time, each contributing to the overall improvement of the LCD. Specific modifications may include changes to the structure or configuration of the LCD to improve its brightness and resolution. This approach can ensure that each problem is thoroughly addressed and contribute to the overall improvement of the LCD. In some embodiments, an OLED display may be used instead of an LCD. OLEDs are known for their high contrast ratio and wide viewing angle and may increase the brightness of the display system.

[0020] In some embodiments, different backlight technologies can be used to increase the brightness of the display system. For example, full-array local dimming (FALD) can be used to control the backlight in different zones of the display, increasing contrast and brightness. In some embodiments, high-dynamic range (HDR) technology may be used to increase the brightness and contrast of the display system. HDR can provide a higher level of contrast between light and dark images on the screen, resulting in a more realistic image. In other embodiments, different types of diffuser films can be used in combination with the display to increase brightness. For example, a microlens array film can be used to direct more light towards the viewer, increasing the perceived brightness. Finally, software solutions can be used in some embodiments to increase brightness. For example, image processing algorithms can be used to adjust the brightness and contrast of the display in real time.

[0021] Some embodiments may involve combinations of various components to achieve a desired effect. For example, the combination of an MRS and a diffusion film may be an important aspect of some embodiments. This combination can result in a synergistic effect, causing the transmissive spatial light modulator to function better than when it includes only one of these components. The improvement can be greater than the sum of each of these components when deployed individually and / or in other combinations of components. The various components may include different materials or technologies that, when combined, enhance the performance of the spatial light modulator. This means that the combined effect of these components can be greater than the sum of their individual effects, resulting in improved performance of the spatial light modulator.

[0022] Some embodiments may also involve quantifying the improvements made to a transmissive spatial light modulator. This can be done through video analysis, using a goniometer and an integrating sphere, and / or through 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. Such a comparison may provide a clear indicator of the improvement made to the transmissive spatial light modulator. Video analysis can be used as a tool for such measurements, 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 may be able to clearly recognize the improvement made. The process of quantifying the improvement may involve measuring a specific parameter such as the luminance or resolution of the transmissive spatial light modulator. As a non-limiting example, a goniometer and an integrating sphere may be used to measure the distribution at different angles of different illumination sources.

[0023] FIG. 1 illustrates an exemplary stack 100 of layers forming a transflective spatial light modulator according to some embodiments. The term "transflective" may refer to the ability of the modulator to transmit and reflect light, which is a feature that enhances the brightness and viewing angle of the display. As shown in FIG. 1, the stack 100 of layers may include one or more of a front face 102, a rear face 104, an anisotropic diffuser film 106, a polarizer layer 108, a liquid crystal layer 110, thin film transistor elements 112, and a layer 114 of microreflective structures electrodes, and / or other components. The particular arrangement of these layers may be designed to optimize light modulation and the resulting display quality.

[0024] The front face 102 may be configured to receive light from a primary light source for modulation. This primary light source may be ambient light or some other source directed onto the front face 102. The light from this source may be directed towards the front face 102 and initiate a journey through the stack of layers. This light may be reflected and modulated into visual information for display and then pass through the front face 102 on its way towards the display surface. The display surface may be any surface suitable for displaying visual information such as a screen or a projection surface. The modulated light can convey visual information to this display surface and create a final image.

[0025] On the opposite side of the front face 102 is the rear face 104. The rear face 104 may be made of a durable material to provide structural stability to the stack. The rear face 104 functions as a base on which the other layers are stacked. Such an arrangement may ensure that the layers are properly aligned and fixed. Since misalignment can lead to distortion or loss of visual information, proper alignment of the layers can result in the modulator functioning correctly.

[0026] The polarizing layer 108 may be disposed between the front surface 102 and the rear surface 104. By positioning the polarizing layer 108 immediately behind the front surface 102, it is ensured that the diffused light is immediately polarized, and the modulation process can be optimized. The polarizing layer 108 can help polarize the passing light and ensure that only the light with the correct polarization can pass through to the next layer. Such selective passage of light based on polarization can enable the modulator to create detailed and high-quality visual information.

[0027] The anisotropic diffusion film 106 may be positioned between the polarizing layer 108 and the rear surface 104. The term "anisotropic" can refer to a property that is direction-dependent, meaning that the anisotropic diffusion film 106 can scatter light in a specific direction. Such controlled light scattering can enhance the brightness and viewing angle of the display. The direction in which the light is scattered can be controlled by adjusting the properties of the anisotropic diffusion film 106. Such controlled light diffusion can ensure that visual information is displayed with high clarity and brightness regardless of the viewing angle. As a non-limiting example, the anisotropic diffusion film 106 may be adhered to the bottom of the polarizing layer 108. As a non-limiting example, the anisotropic diffusion film 106 may be protected by the polarizing layer 108.

[0028] The 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 location where the actual modulation of light occurs. The liquid crystals in this layer can be operated by applying an electric field and changing the polarization of the light passing through the liquid crystals. In some embodiments, the liquid crystal layer 110 may include color filter glass, polarizers, polarizing films, liquid crystals, and / or other components. In some embodiments, the color filter glass can be made thinner to minimize the distance from the anisotropic diffusion film to the layer of the micro-reflective structure electrode 114 and / or the layer of 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, blurring can be reduced by shortening the distance from the anisotropic diffusion film to the layer of the micro-reflective structure electrode 114 and / or the rear surface 104.

[0029] The thin-film transistor 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 in order to achieve addressable spatial light modulation by the liquid crystal layer 110. The thin-film transistor element 112 can control the application of electricity to the liquid crystal layer 110. By controlling the electric field, the thin-film transistor element 112 can control the modulation of light by the liquid crystal layer 110 and create desired visual information.

[0030] The layer 114 of micro-reflective structure electrodes can be disposed between the thin-film transistor element 112 and the rear surface 104. The layer 114 of micro-reflective structure electrodes can be composed of small reflective electrodes that reflect the modulated light back toward the front surface 102. This reflection can enhance the brightness and viewing angle of the display because it ensures that the modulated light is directed toward the display surface and creates the final image. The layer 114 of micro-reflective structure electrodes can diffuse the light reaching itself. The combination of the anisotropic diffusion film 106 and the layer 114 of micro-reflective structure electrodes can create a synergistic effect and result in a high-quality, bright, wide-viewing-angle display.

[0031] FIG. 2 illustrates an exemplary display device 200 implementing a transflective spatial light modulator according to some embodiments. As shown in FIG. 2, the display device 200 can include one or more of a screen 202, a light source 204, a modulator 206, a controller 208, a power supply 210, a casing 212, and / or other components. The display device 200 can be a device such as a television, a computer monitor, a smartphone, or a tablet. The display device 200 can be used in various settings such as at home, in the office, at school, or in public places.

[0032] The screen 202 of the display device 200 may 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 an image. The screen 202 can be a component that visually presents information to the user. The screen 202 may be capable of displaying an image in color or black and white. The screen 202 may be capable of displaying an image at various resolutions. The screen 202 may be capable of displaying a high-level detailed image, such as a high definition or ultra-high definition image. The screen 202 may be touch-enabled, and touching the screen 202 enables the user to interact with the display device 200. The screen 202 may be capable of detecting the user's touch and converting it into a command or input for the display device 200.

[0033] The light source 204 of the display device 200 may be any type of light source capable of illuminating the screen 202. The light source 204 may be ambient light and / or any other component that provides light to the screen 202. In some embodiments, the display device 200 may include a backlight source 205. The backlight source 205 may be the backlight of the modulator 206. The backlight source 205 may be located behind the screen 202.

[0034] The modulator 206 of the display device 200 may be a spatial light modulator that modulates the 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 stack 100 of layers that forms a transmissive spatial light modulator, as described in FIG. 1. The modulator 206 may be addressable to selectively reflect the light from the light source 204 back towards the screen 202 across an array of discrete locations.

[0035] The controller 208 of the display device 200 may be a microcontroller, a microprocessor, or any other type of controller capable of controlling the operation of the display device 200. The controller 208 may be a component that manages the operation of the display device 200. The controller 208 may be capable of controlling the light source 204, the modulator 206, and other components of the display device 200. The controller 208 may be able to send commands to the backlight source 205, the modulator 206, and / or other components to control the display of an image on the screen 202. The controller 208 may be able to receive inputs from a user, a computer, or another device and may be able to output signals to control the operation of the display device 200. The controller 208 may be able to process inputs from a user or a computer and convert them into commands for the display device 200.

[0036] The power supply 210 of the display device 200 may be a battery, a power adapter, or any other type of power supply capable of supplying power to the display device 200. The power supply 210 may be a component that supplies power to the display device 200. The power supply 210 may be able to supply power at various voltages and currents. The power supply 210 may be able to supply power continuously and / or intermittently. The power supply 210 may be able to provide a stable supply of power to the display device 200 or may be able to provide power in bursts or pulses.

[0037] The casing 212 of the display device 200 may be a housing that surrounds other components of the display device 200. The casing 212 may be a component that protects other components of the display device 200 from damage. The casing 212 may be made of plastic, metal, or any other material capable of protecting the components of the display device 200. The casing 212 may be a robust and durable component that can withstand impacts and other forms of physical stress. The casing 212 may be designed to allow access to the screen 202 and may include openings for connectors, switches, and other components of the display device 200. The casing 212 may be designed to allow easy access to the screen 202 for viewing and interaction while also providing openings for cable connection, switch operation, and use of other components.

[0038] Figure 3 illustrates a method 300 for manufacturing a transflective spatial light modulator according to some embodiments. This transflective spatial light modulator may include the stack 100 of layers described in connection with FIG. 1. For the sake of explanation, the steps of the exemplary method 300 are described herein as occurring continuously or linearly. However, multiple instances of the exemplary method 300 may occur in parallel.

[0039] In step 302, a front surface may be fabricated. This front surface may be the first point of contact for light from the primary light source. In some embodiments, fabricating the front surface may include thinning a glass piece. In some embodiments, fabricating the front surface may include applying an anti-glare film to the glass piece using an adhesive. Fabricating the front surface may involve a cleaning and smoothing process to ensure optimal light transmission. The primary light source may be any source of light, such as an LED or a laser.

[0040] In step 304, a rear surface can be fabricated. This rear surface may be the final contact point of the modulated light before it is reflected back towards the front surface. Fabricating the rear surface may involve a process similar to that used for fabricating the front surface. In some embodiments, fabricating the rear surface may include depositing metal onto a thin film transistor (TFT). This rear surface can be positioned on the opposite side of the front surface. Positioning the rear surface on the opposite side of the front surface can enable efficient reflection and modulation of light.

[0041] In step 306, the stack of layers may be assembled between the front surface and the rear surface. Assembling the stack of layers may 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 stack of layers can include a polarization layer, an anisotropic diffusion film, a liquid crystal layer, a thin film transistor element, and a layer of micro-reflective structure electrodes. Each of these layers can contribute to the modulation of light.

[0042] In step 308, the polarization layer can be installed as the first layer in the stack. The polarization layer can be responsible for polarizing light. Polarizing light can involve aligning light waves in a specific direction. This layer can be responsible for polarizing the light passing through it. The polarization can then pass through subsequent layers in the stack. This polarization layer can be positioned closest to the front surface. Positioning the polarization layer closest to the front surface can enable the polarization layer to interact with light from the primary light source before any other layer.

[0043] In step 310, the anisotropic diffusion film can be disposed between the polarization layer and the rear surface. The anisotropic diffusion film can be responsible for diffusing light from the primary light source. Diffusing light can involve spreading the light over a larger area.

[0044] In step 312, the liquid crystal layer can be disposed between the anisotropic diffusion film and the rear surface. The liquid crystal layer can be responsible for modulating polarization. Modulating polarization can involve changing its characteristics such as its intensity or direction. This layer can be responsible for modulating the polarization.

[0045] In step 314, the thin-film transistor element may be disposed between the liquid crystal layer and the rear surface. The thin-film transistor element may be responsible for applying electricity to the liquid crystal layer. By applying electricity to the liquid crystal layer, its characteristics can be changed, thereby modulating light. This element may be configured to apply electricity to the liquid crystal layer in order to achieve addressable spatial light modulation by the liquid crystal layer.

[0046] In step 316, the layer of micro-reflective structure electrodes may be disposed between the thin-film transistor element and the rear surface. The layer of micro-reflective structure electrodes may be responsible for reflecting the modulated light back toward the front surface. The reflection of the modulated light may involve changing its direction so that it travels back toward the front surface. In some embodiments, step 316 may include etching the micro-reflective structure electrodes onto the rear surface.

[0047]

[0046] In step 318, the stack of assembled layers may be sealed between the front surface and the rear surface in order to complete the manufacture of the transflective spatial light modulator 300. Sealing the stack of layers may involve surrounding the layers in order to protect them from external factors. Completion of the manufacture of the transflective spatial light modulator may involve final inspection and quality control processes.

[0048] These embodiments may also be applicable to other problems where it is desirable to increase brightness, such as in automotive displays, outdoor billboards, or any other display system where visibility may be impaired due to external lighting conditions.

[0049] Although the present technology has been described in detail for purposes of illustration based on what is currently considered to be the most practical and preferred embodiment, such details are for that purpose only, and it is to be understood that the present technology is not limited to the disclosed embodiments, but on the contrary, is intended to cover modifications and equivalent configurations within the spirit and scope of the appended claims. For example, it is to be understood that the present technology contemplates that, to the extent possible, one or more features of any embodiment may be combined with one or more features of any other embodiment.

Claims

1. A transflective spatial light modulator, wherein the transflective spatial light modulator A front surface configured to receive light from a primary light source for modulation, reflect the light, and allow the light modulated into visual information for display to pass through on its way to the display surface; A rear surface opposite the front surface; A stack of layers between the front surface and the rear surface, the stack of layers including A polarization layer; An anisotropic diffusion film disposed between the polarization layer and the rear surface; A liquid crystal layer disposed between the anisotropic diffusion film and the rear surface; A thin film transistor element disposed between the liquid crystal layer and the rear surface, the thin film transistor element being configured to apply electricity to the liquid crystal layer in order to achieve addressable spatial light modulation by the liquid crystal layer; A layer of micro reflective structure electrodes disposed between the thin film transistor element and the rear surface.

2. The transflective spatial light modulator according to claim 1, wherein the thin film transistor element is adjacent to the liquid crystal layer.

3. The transflective spatial light modulator according to claim 1, wherein the layer of micro reflective structure electrodes is adjacent to the thin film transistor element.

4. The transflective spatial light modulator according to claim 3, wherein the micro reflective structure electrodes have a random shape and / or a pseudo-random shape.

5. The transflective spatial light modulator according to claim 3, wherein the micro reflective structure electrodes have a size of about 5 micrometers to about 7 micrometers.

6. The transflective spatial light modulator according to claim 1, wherein the stack of layers further includes a diffusible and optically transparent adhesive layer between the anisotropic diffusion film and the polarization layer.

7. The transflective spatial light modulator according to claim 1, wherein the polarization layer is an achromatic polarizer.

8. The transflective spatial light modulator according to claim 1, wherein the stack of layers includes an anti-glare or matte film forming the front surface.

9. A method for manufacturing a transflective spatial light modulator, the method including Fabricating a front surface configured to receive light from a primary light source for modulation, reflect the light, and allow the light modulated into visual information for display to pass through on its way to the display surface; Fabricating a rear surface opposite the front surface; Assembling a stack of layers between the front surface and the rear surface, including Installing a polarization 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, the thin film transistor element being configured to apply electricity to the liquid crystal layer in order to achieve addressable spatial light modulation by the liquid crystal layer; Disposing a layer of micro-reflective structure electrodes between the thin film transistor element and the rear surface, including assembling; Sealing the stack of the assembled layers between the front surface and the rear surface, including a method.

10. The method according to claim 9, wherein the thin film transistor element is adjacent to the liquid crystal layer.

11. The method according to claim 9, wherein the layer of micro-reflective structure electrodes is adjacent to the thin film transistor element.

12. The method according to claim 11, wherein the micro-reflective structure electrodes have a random shape and / or a pseudo-random shape.

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