Display device and image system

Abstract

The utility model relates to the technical field of display, and provides a display device and an image system. The display device comprises a display image source, a polarization adjusting device and an electric control system. The polarization adjusting device comprises a first transparent substrate, an adjusting liquid crystal layer and a second transparent substrate. The polarization adjusting device has a closed state and an open state. In the closed state, the first linearly polarized light penetrating through the polarization adjusting device is changed into second linearly polarized light. In the on state, the polarization direction of the first linearly polarized light penetrating through the polarization adjusting device is kept unchanged. The electronic control system is used for controlling the display image source to emit initial image light and controlling the polarization adjusting device to be switched between an opening state and a closing state so as to output a first image formed by the first linearly polarized light and a second image formed by the second linearly polarized light, and the first image and the second image can be synthesized into a three-dimensional image. The display device has the beneficial effect that the display device can be conveniently switched into 2D display and 3D display.

Description

Technical Field

[0001] This application relates to the field of display technology, and more specifically, to display devices and imaging systems. Background Technology

[0002] Compared to ordinary 2D displays, 3D display technology can make images more three-dimensional and realistic. Existing 3D display technologies mainly include passive polarized 3D display technology, active shutter 3D display technology, and lenticular lens technology.

[0003] However, passive polarized 3D display technology requires at least two independent image sources to produce display light with different polarization states; active shutter 3D display technology requires simultaneous control of the left and right lenses of the shutter 3D glasses via an infrared signal transmitter so that the left and right eyes can see the corresponding image at the correct time; in lenticular lens technology, the high-precision positioning and alignment of the micron-level array lenticular lens with the display pixels is difficult, and after the lenticular lens is installed, it can only be used for 3D display, and the display resolution is halved.

[0004] All of the above-mentioned 3D display technologies suffer from the problem of difficulty in easily switching between 2D and 3D displays, making them inconvenient to use. Utility Model Content

[0005] This application provides a display device and an image system to solve the problem that known 3D display technologies cannot easily switch between 2D and 3D displays.

[0006] In a first aspect, embodiments of this application provide a display device, including a display image source, a polarization adjustment device, and an electronic control system. The display image source emits initial image light, which is first linearly polarized light. The polarization adjustment device is disposed on the light-emitting side of the display image source. The polarization adjustment device includes a first transparent substrate, a modulating liquid crystal layer, and a second transparent substrate arranged sequentially. The first transparent substrate, the modulating liquid crystal layer, and the second transparent substrate are arranged sequentially along the light-emitting direction of the display image source. The long axis direction of the liquid crystal layer near the first transparent substrate is consistent with the polarization direction of the first linearly polarized light. The polarization adjustment device has a closed state and an open state. In the closed state, the first linearly polarized light passing through the polarization adjustment device becomes second linearly polarized light. In the open state, the polarization direction of the first linearly polarized light passing through the polarization adjustment device remains unchanged. The polarization directions of the first linearly polarized light and the second linearly polarized light are perpendicular to each other. The electronic control system controls the display image source to emit the initial image light, and controls the polarization adjustment device to switch between the open and closed states to output a first image composed of the first linearly polarized light and a second image composed of the second linearly polarized light, wherein the first image and the second image can be synthesized into a stereoscopic image.

[0007] In this embodiment, the display device controls its polarization adjustment device through an electronic control system, enabling the display device to output linearly polarized light with mutually perpendicular polarization directions according to spatial or temporal distribution, thereby achieving 3D display. When 2D display is required, it is only necessary to keep the polarization adjustment device in either the on or off state. At this time, the polarization direction of the emitted light from the display device is consistent and will not change over time, thereby achieving 2D display.

[0008] Thus, the display device of this embodiment can easily switch between 2D and 3D display.

[0009] In one possible implementation, the electronic control system includes a timing control system, a first electronic control system, and a second electronic control system. The timing control system is communicatively connected to the first and second electronic control systems to achieve timing synchronization between them.

[0010] In one possible implementation, the display device further includes an adhesive layer. The polarization adjustment device is bonded to the light-emitting side of the display image source via the adhesive layer.

[0011] In one possible implementation, the image source includes a display panel, and the emitted light from the display panel is first linearly polarized light. The display panel includes a backlight system, a first polarizer, a third transparent substrate, a liquid crystal layer, a color resist layer, a fourth transparent substrate, and a second polarizer, which are stacked sequentially. A polarization adjustment device is bonded to the light-emitting side of the second polarizer via an adhesive layer.

[0012] In one possible implementation, the image source includes a display panel and a quarter-wave plate, with the emitted light from the display panel being circularly polarized light. The display panel includes a third transparent substrate, a color resist layer, a fourth transparent substrate, and a circular polarizer stacked sequentially. The quarter-wave plate is stacked on the light-emitting side of the circular polarizer, and the polarization adjustment device is bonded to the light-emitting side of the quarter-wave plate via an adhesive layer.

[0013] In one possible implementation, the image source includes a display panel and a linear polarizer; the emitted light from the display panel is unpolarized light. The display panel includes a third transparent substrate, a color resist layer, and a fourth transparent substrate disposed sequentially. The linear polarizer is connected to the light-emitting side of the fourth transparent substrate, and the polarization adjustment device is bonded to the light-emitting side of the linear polarizer via an adhesive layer.

[0014] In one possible implementation, the display image source is a microdisplay image source. The display device also includes a projection lens, which is located on the light-emitting side of the polarization adjustment device. The initial image light emitted by the microdisplay image source is adjusted by the polarization adjustment device and then projected and displayed by the projection lens.

[0015] In one possible implementation, the microdisplay image source includes a self-emissive silicon-based OLED chip that emits circularly polarized light and a quarter-wave plate; the quarter-wave plate is stacked on the light-emitting side of the silicon-based OLED chip. The silicon-based OLED chip includes a silicon substrate, a color resist layer, a fourth transparent substrate, and a circular polarizer stacked sequentially. The quarter-wave plate is stacked on the light-emitting side of the circular polarizer, and the quarter-wave plate and the polarization adjustment device are bonded together by an adhesive layer.

[0016] In one possible implementation, the microdisplay image source includes a red light-emitting diode (LED), a green LED, a blue LED, a beam combining system, a light homogenizing system, a deflection system, and an LCoS chip. The light emitted by the red, green, and blue LEDs sequentially passes through the beam combining system, the light homogenizing system, and the deflection system before being incident on the LCoS chip. After being emitted on the surface of the LCoS chip, the light passes through the deflection system again to generate the initial image light.

[0017] In one possible implementation, the microdisplay image source includes a red light-emitting diode (LED), a green LED, a blue LED, a beam combining system, a light homogenizing system, a deflection system, a DMD chip, and a linear polarizer. The linear polarizer is superimposed on the light-incident side of the polarization adjustment device. The light emitted by the red, green, and blue LEDs sequentially passes through the beam combining system, the light homogenizing system, and the deflection system before being incident on the DMD chip. After being emitted on the surface of the DMD chip, the light passes through the deflection system again and is then polarized by the linear polarizer to generate the initial image light.

[0018] Secondly, embodiments of this application provide an imaging system including 3D glasses and the aforementioned display device. The 3D glasses include a first lens and a second lens. The polarization direction of the first lens is parallel to that of first linearly polarized light, and the polarization direction of the second lens is parallel to that of second linearly polarized light. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings in the embodiments will be briefly described below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the structure of a first display device according to an embodiment of this application.

[0021] Figure 2 for Figure 1 A schematic diagram of the display device in the spatial distribution mode.

[0022] Figure 3A schematic diagram showing the pixel distribution of the image source.

[0023] Figure 4 This is a schematic diagram showing the polarization direction distribution of the emitted image after the image source has been adjusted by a polarization adjustment device in a spatial distribution mode.

[0024] Figure 5 This is a schematic diagram showing the distribution of another polarization direction of the emitted image after the image source is adjusted by the polarization adjustment device in the spatial distribution mode.

[0025] Figure 6 This is a schematic diagram of the image source at time t1 in the time-domain distribution mode.

[0026] Figure 7 This is a schematic diagram showing the polarization direction distribution of the emitted image from the image source at time t1 after being adjusted by the polarization adjustment device, in a time-domain distribution mode.

[0027] Figure 8 This is a schematic diagram of the image source at time t2 in the time-domain distribution mode.

[0028] Figure 9 This is a schematic diagram showing the polarization direction distribution of the emitted image from the image source at time t2 after being adjusted by the polarization adjustment device, in the time-domain distribution mode.

[0029] Figure 10 This is a schematic diagram of the structure of a second type of display device according to an embodiment of this application.

[0030] Figure 11 This is a schematic diagram of the structure of a third type of display device according to an embodiment of this application.

[0031] Figure 12 This is a schematic diagram of the structure of a fourth display device according to an embodiment of this application.

[0032] Figure 13 This is a schematic diagram of the structure of a fifth type of display device according to an embodiment of this application.

[0033] Figure 14 This is a schematic diagram of the structure of a sixth display device according to an embodiment of this application.

[0034] Figure 15 This is a schematic diagram of the imaging system according to an embodiment of this application.

[0035] Key component symbols: 100-Display device; 20-Polarization adjustment device; 21-First transparent substrate; 22-Controlled liquid crystal layer; 23-Second transparent substrate; 30-Electronic control system; 31-Timing control system; 32-First electronic control system; 33-Second electronic control system; 40-Adhesive layer; 10-Display image source; 11-Display panel; 11a-Backlight system; 11b-First polarizer; 11c-Third transparent substrate; 11d-Display liquid crystal layer; 11e-Color resist layer; 11f-Fourth transparent substrate; 11g-Second polarizer; 10a-Display image source; 12-Display panel; 12a-Third transparent substrate; 12b-Color resist layer; 12c-Fourth transparent substrate; 12d-Circular polarizer; 12e-Quarter-wave plate; 10b-Display image source; 13-Display panel; 13a-Third transparent substrate; 13b-Color resist layer; 13c-First transparent substrate; 10a-Display image source; 11b-Color resist layer; 11c-Second transparent substrate; 11d-Circular polarizer; 11e-Quarter-wave plate; 11f-Display image source; 11g-Display panel; 11a-Third transparent substrate ...Second transparent Four transparent substrates; 13d - linear polarizer; 10c - micro-display image source; 14 - silicon-based OLED chip; 14a - silicon substrate; 14b - color resist layer; 14c - fourth transparent substrate; 14d - circular polarizer; 14e - quarter-wave plate; 10d - micro-display image source; 15a - red light-emitting diode; 15b - green light-emitting diode; 15c - blue light-emitting diode; 15d - beam combining system; 15e - light homogenizing system; 15f - deflection system; 15g - LCoS chip; 10e - micro-display image source; 16a - red light-emitting diode; 16b - green light-emitting diode; 16c - blue light-emitting diode; 16d - beam combining system; 16e - light homogenizing system; 16f - deflection system; 16g - DMD chip; 16h - linear polarizer; 200 - imaging system; 300 - 3D glasses; 310 - first lens; 320 - second lens. Detailed Implementation

[0036] The technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments.

[0037] It should be noted that when a component is said to be "fixed to" another component, it can be directly on the other component or there may be an intervening component. When a component is said to be "connected to" another component, it can be directly connected to the other component or there may be an intervening component. When a component is said to be "set on" another component, it can be directly set on the other component or there may be an intervening component. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0038] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0039] Some embodiments of this application are described in detail. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0040] Example

[0041] See Figure 1 This embodiment provides a display device 100, including a display image source 10, a polarization adjustment device 20, and an electronic control system 30.

[0042] The display image source 10 is used to emit initial image light, which is first linearly polarized light.

[0043] The polarization adjustment device 20 is located on the light-emitting side of the display image source 10. The polarization adjustment device 20 has a closed state and an open state; in the closed state, the first linearly polarized light passing through the polarization adjustment device 20 is converted into second linearly polarized light; in the open state, the polarization direction of the first linearly polarized light passing through the polarization adjustment device 20 remains unchanged.

[0044] The polarization directions of the first linearly polarized light and the second linearly polarized light are perpendicular to each other.

[0045] The electronic control system 30 includes a timing control system 31, a first electronic control system 32, and a second electronic control system 33. The timing control system 31 is communicatively connected to the first electronic control system 32 and the second electronic control system 33 to achieve timing synchronization between the first electronic control system 32 and the second electronic control system 33.

[0046] The display image source 10 emits initial image light under the control of the first electronic control system 32. The second electronic control system 33 controls the polarization adjustment device 20 to switch between an on state and an off state to output a first image P1 composed of first linearly polarized light and a second image P2 composed of second linearly polarized light. The first image P1 and the second image P2 can be combined to form a stereoscopic image.

[0047] When 3D display and viewing are required, users can wear 3D glasses 300. The 3D glasses 300 have a first lens 310 and a second lens 320. The polarization direction of the first lens 310 is parallel to the first linearly polarized light, and the polarization direction of the second lens 320 is parallel to the second linearly polarized light.

[0048] Thus, the first image P1 can enter one of the user's eyes (such as the left eye) through the first lens 310, and the second image P2 can enter the user's other eye (such as the right eye) through the second lens 320, thereby enabling the user to obtain a 3D viewing experience.

[0049] In this embodiment, the polarization adjustment device 20 can be a TN (Twist Nematic) liquid crystal cell, which includes a first transparent substrate 21, a control liquid crystal layer 22, and a second transparent substrate 23 arranged sequentially. The first transparent substrate 21, the control liquid crystal layer 22, and the second transparent substrate 23 are arranged sequentially along the light emission direction of the display image source 10. Pixelated electrodes are present on the first transparent substrate 21. The long axis direction of the liquid crystal on the side of the control liquid crystal layer 22 closest to the first transparent substrate 21 is consistent with the polarization direction of the first linearly polarized light.

[0050] The second electronic control system 33 is electrically connected between the first transparent substrate 21 and the second transparent substrate 23, and can control the polarization adjustment device 20 to switch between an on and off state by controlling the voltage applied between the first transparent substrate 21 and the second transparent substrate 23. For example, when the voltage applied between the first transparent substrate 21 and the second transparent substrate 23 is low, the polarization adjustment device 20 is in the off state; when the voltage is high, the polarization adjustment device 20 is in the on state.

[0051] The display image source 10 in this embodiment can be of various types, and several of them will be described exemplarily below.

[0052] Figure 1 In the illustrated embodiment, the display image source 10 includes a display panel 11, and the emitted light from the display panel 11 is first linearly polarized light. For example, the display panel 11 is a TFT-LCD display panel 11 capable of emitting first linearly polarized light.

[0053] The display panel 11 includes a backlight system 11a, a first polarizer 11b, a third transparent substrate 11c, a liquid crystal layer 11d, a color resist layer 11e, a fourth transparent substrate 11f, and a second polarizer 11g, which are stacked sequentially. Pixelated electrodes are present on the third transparent substrate 11c. The first polarizer 11b and the second polarizer 11g are linear polarizers. The polarization transmission directions of the first polarizer 11b and the second polarizer 11g are perpendicular to each other. Furthermore, the polarization transmission direction of the second polarizer 11g is aligned with the long axis direction of the liquid crystal on the side of the control liquid crystal layer 22 of the polarization adjustment device 20 closest to the first transparent substrate 21.

[0054] The first transparent substrate 21 of the polarization adjustment device 20 is bonded to the light-emitting side of the second polarizer 11g via an adhesive layer 40. The adhesive layer 40 may be composed of optically clear adhesive (OCA), optical clear resin (OCR), or other types of optical adhesive.

[0055] The display device 100 in this embodiment can implement a 3D display mode, which can be either a spatial distribution mode or a temporal distribution mode, and will be described separately below.

[0056] Based on the display device 100 of this embodiment, when spatially distributed 3D display is required, the signals of the two display images can be input to the display image source 10 via the first electronic control system 32. At this time, the voltage control of adjacent pixels in the display image source 10 belongs to the two images respectively. Meanwhile, see also Figure 2 Under the control of the timing control system 31, the second electronic control system 33 controls the switching states of adjacent pixel electrodes of the first transparent substrate 21 of the polarization adjustment device 20 to be opposite. Therefore, the polarization directions of the light rays emitted from the second transparent substrate 23 to adjacent pixels are perpendicular to each other (see...). Figures 3-5 Users can view 3D images by wearing the aforementioned 3D glasses 300.

[0057] Figure 3 The image shows the pixel distribution of the image source 10, as shown below. Figure 3 The pixel colors in the image are arranged in a cyclical order from left to right: R (Red), G (Green), and B (Blue).

[0058] Figure 4 This illustrates the polarization direction distribution of the emitted image after the image displayed by image source 10 has been adjusted by polarization adjustment device 20, in a spatial distribution mode. For example... Figure 4 The pixels in the image are distributed alternately from left to right in a manner that combines vertical polarization (represented by vertical double-headed arrows in the image) and horizontal polarization (represented by horizontal double-headed arrows in the image).

[0059] Figure 5 This illustrates another polarization direction distribution of the emitted image after the image displayed by image source 10 has been adjusted by polarization adjustment device 20, in a spatial distribution mode. For example... Figure 5 The polarization state of each pixel is distributed in a pattern of alternating vertical and horizontal polarization in each row and column of the image.

[0060] Figure 4 or Figure 5In this image, all vertically polarized pixels constitute the first image P1, and all horizontally polarized pixels constitute the second image P2. Thus, by wearing 3D glasses, one of the user's eyes can receive the first image P1, and the other eye can receive the second image P2, thereby creating 3D vision.

[0061] For the aforementioned spatially distributed 3D display, the driving electrical signal frequency for both images can be the same as the conventional display frequency. Optionally, to ensure display quality, this frequency should be 60Hz or higher.

[0062] When the display device 100 based on this embodiment needs to perform time-domain distributed 3D display, the implementation method is as follows.

[0063] At time t1, the first electronic control system 32 controls the display device 100 to output light from the first image P1 by applying a first voltage (V1) to the image source 10. Simultaneously, under the control of the timing control system 31 and the second voltage (V2), the liquid crystal layer 22 in the polarization adjustment device 20 is in a first polarization state (e.g., vertical polarization). The state of the display device 100 and the polarization distribution of the image emitted from the polarization adjustment device 20 at this time can be seen in… Figure 6 and Figure 7 ;

[0064] At time t2, the first electronic control system 32 controls the light output of the second image P2 by the display system through the first voltage (V1) applied to the display image source 10. Simultaneously, under the control of the timing control system 31 and the second voltage (V2), the liquid crystal layer 22 in the polarization adjustment device 20 is in a second polarization state (e.g., horizontal deflection). For example, at time t1, the second voltage (V2) is low, and the polarization adjustment device 20 is in the off state. The state of the display device 100 and the polarization distribution of the image emitted by the display device 100 through the polarization adjustment device 20 can be seen respectively in… Figure 8 and Figure 9 .

[0065] Optionally, at time t1, the second voltage (V2) is low, and the polarization adjustment device 20 is in the off state; at time t2, the second voltage (V2) is high, and the polarization adjustment device 20 is in the on state. In this way, the polarization directions of the light rays at time t1 and time t2 are made perpendicular to each other.

[0066] Thus, by having the drive signals for two adjacent frames originate from two separate images, the polarization direction of light across the entire display screen is consistent at time t1. However, when switching to the next frame at time t2, the polarization direction of light across the entire screen rotates by 90°. By ensuring that the frame rate is less than the human eye's reaction time, users can view 3D images using the aforementioned 3D glasses 300 without any loss of display resolution.

[0067] Optionally, to ensure display quality, the frequency at which the display image source 10 and the polarization adjustment device 20 switch is not less than 120Hz.

[0068] In this embodiment, the display device 100 can realize 2D display in addition to 3D display.

[0069] When 2D display is required, regardless of how the first voltage (V1) applied to the display image source 10 by the first electronic control system 32 switches, it is only necessary to keep the polarization adjustment device 20 either on or off. In this state, the polarization direction of the emitted light from the display device 100 is consistent and does not change over time, thus enabling 2D display. Optionally, the polarization adjustment device 20 can be kept off to reduce power consumption.

[0070] Figure 10 The display device 100 shown uses a different display image source 10a.

[0071] See Figure 10 The display image source 10a of the display device 100 includes a display panel 12 and a quarter-wave plate 12e, and the light emitted from the display panel 12 is circularly polarized light. For example, the display panel 12 is an OLED display panel capable of emitting circularly polarized light.

[0072] The display panel 12 includes a third transparent substrate 12a, a color resist layer 12b, a fourth transparent substrate 12c, and a circular polarizer 12d stacked sequentially. A quarter-wave plate 12e is stacked on the light-emitting side of the circular polarizer 12d, and the polarization adjustment device 20 is bonded to the light-emitting side of the quarter-wave plate 12e by an adhesive layer 40.

[0073] The circularly polarized light output from the display panel 12 via the circular polarizer 12d is then passed through the quarter-wave plate 12e to form the initial image light in the first polarization state.

[0074] The display device 100 can also be used for the aforementioned spatial distributed 3D display, temporal distributed 3D display, or 2D display, which will not be elaborated here.

[0075] Figure 11 The display device 100 shown uses a different display image source 10b.

[0076] See Figure 11 The display image source 10b of the display device 100 includes a display panel 13 and a linear polarizer 13d. The light emitted from the display panel 13 is unpolarized light. For example, the display panel 13 is a MicroLED display panel or a MiniLED display panel capable of emitting unpolarized light.

[0077] The display panel 13 includes a third transparent substrate 13a, a color resist layer 13b, and a fourth transparent substrate 13c arranged sequentially. A linear polarizer 13d is connected to the light-emitting side of the fourth transparent substrate 13c, and a polarization adjustment device 20 is bonded to the light-emitting side of the linear polarizer 13d via an adhesive layer 40.

[0078] The unpolarized light output by the display panel 13 is then passed through the linear polarizer 13d to form the initial image light in the first polarization state.

[0079] The display device 100 can also be used for the aforementioned spatial distributed 3D display, temporal distributed 3D display, or 2D display, which will not be elaborated here.

[0080] The foregoing Figure 1 , Figure 10 and Figure 11 The three display image sources 10, 10a, and 10b shown are all based on display panels with macroscopic dimensions (e.g., >1 inch), allowing the human eye to directly observe the displayed image. In this case, the polarization adjustment device 20 can be bonded to the light-emitting side of the display image sources 10, 10a, and 10b via the adhesive layer 40, thereby forming an integrated display device 100.

[0081] With the development of technology, microdisplays (or microdisplay chips) have advantages such as small size and high resolution due to the support of CMOS technology, and can be used as display image sources in conjunction with projection lenses.

[0082] Figures 12-14 Some display image sources based on microdisplay chips are introduced, which can also be called microdisplay image sources. At this time, the light emitted by the microdisplay image source, after passing through the polarization adjustment device 20, can be projected onto a screen through a projection lens 50 (for example, projected onto a screen).

[0083] See Figure 12 The microdisplay image source 10c includes a self-emissive silicon-based OLED chip 14 (such as a MicroOLED chip, OLEDoS chip, etc.) that emits circularly polarized light and a quarter-wave plate 14e, with the quarter-wave plate 14e stacked on the light-emitting side of the silicon-based OLED chip 14.

[0084] The silicon-based OLED chip 14 includes a silicon substrate 14a, a color resist layer 14b, a fourth transparent substrate 14c, and a circular polarizer 14d stacked sequentially. A quarter-wave plate 14e is stacked on the light-emitting side of the circular polarizer 14d, and the quarter-wave plate 14e and the polarization adjustment device 20 are bonded together by an adhesive layer 40.

[0085] Thus, the light emitted by the silicon-based OLED chip 14 forms the initial image light in the first polarization state after passing through the quarter-wave plate 14e.

[0086] The display device 100 using the micro-display image source 10c can also perform the aforementioned spatial distributed 3D display, temporal distributed 3D display, or 2D display, which will not be elaborated here.

[0087] See Figure 13 The microdisplay image source 10d includes a red light-emitting diode (R_LED) 15a, a green light-emitting diode (G_LED) 15b, a blue light-emitting diode (B_LED) 15c, a beam combining system 15d, a light homogenizing system 15e, a bending system 15f, and an LCoS chip 15g.

[0088] The light emitted by the red LED 15a, green LED 15a, and blue LED 15c passes sequentially through the beam combining system 15d, the homogenizing system 15e, and the deflection system 15f before being incident on the LCoS chip 15g. After being emitted on the surface of the LCoS chip 15g, the light passes through the deflection system 15f again to generate the initial image light.

[0089] The display device 100 using the micro-display image source 10d can also perform the aforementioned spatial distributed 3D display, temporal distributed 3D display, or 2D display, which will not be elaborated here.

[0090] See Figure 14 The microdisplay image source 10e includes a red light-emitting diode 16a, a green light-emitting diode 16b, a blue light-emitting diode 16c, a beam combining system 16d, a light homogenizing system 16e, a bending system 16f, a DMD chip 16g, and a linear polarizer 16h.

[0091] A linear polarizer 16h is superimposed on the incident light side of the polarization adjustment device 20. Light emitted from the red LED 16a, green LED 16b, and blue LED 16c passes sequentially through the beam combining system 16d, the homogenizing system 16e, and the deflection system 16f before being incident on the DMD chip 16g. After being emitted on the surface of the DMD chip 16g, the light passes through the deflection system 16f again and is then polarized by the linear polarizer 16h to generate the initial image light.

[0092] The display device 100 using the micro-display image source 10e can also perform the aforementioned spatial distributed 3D display, temporal distributed 3D display, or 2D display, which will not be elaborated here.

[0093] In summary, the display device 100 of this application embodiment can easily switch between 3D and 2D displays to meet different display needs. Furthermore, in the spatially distributed 3D display mode, the driving electrical signal frequencies for the two images only need to be consistent with the conventional display frequency. In the temporally distributed 3D display, the display resolution of the images is not lost. Users can select the desired display mode according to their actual needs.

[0094] See Figure 15 This embodiment also provides an imaging system 200, which includes 3D glasses 300 and any of the aforementioned display devices 100. The 3D glasses 300 includes a first lens 310 and a second lens 320. The polarization direction of the first lens 310 is parallel to the first linearly polarized light, and the polarization direction of the second lens 320 is parallel to the second linearly polarized light.

[0095] The above embodiments are only used to illustrate the technical solutions of this application and are not intended to limit it. Although this application has been described in detail with reference to the above preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions to the technical solutions of this application should not depart from the spirit and scope of the technical solutions of this application.

Claims

1. A display device, characterized by comprising: include: Display image source for emitting initial image light, the initial image light being first linearly polarized light; A polarization adjustment device is disposed on the light-emitting side of the display image source; the polarization adjustment device includes a first transparent substrate, a modulating liquid crystal layer, and a second transparent substrate arranged sequentially; the first transparent substrate, the modulating liquid crystal layer, and the second transparent substrate are arranged sequentially along the light-emitting direction of the display image source; the long axis direction of the liquid crystal layer near the first transparent substrate is consistent with the polarization direction of the first linearly polarized light; the polarization adjustment device has a closed state and an open state; in the closed state, the first linearly polarized light passing through the polarization adjustment device becomes second linearly polarized light; in the open state, the polarization direction of the first linearly polarized light passing through the polarization adjustment device remains unchanged; wherein, the polarization directions of the first linearly polarized light and the second linearly polarized light are perpendicular to each other; and, An electronic control system is provided to control the display image source to emit the initial image light, and to control the polarization adjustment device to switch between an on state and an off state to output a first image composed of first linearly polarized light and a second image composed of second linearly polarized light, wherein the first image and the second image can be synthesized into a stereoscopic image.

2. The display device according to claim 1, characterized in that: The electronic control system includes a timing control system, a first electronic control system, and a second electronic control system. The timing control system is communicatively connected to the first electronic control system and the second electronic control system to achieve timing synchronization between the first electronic control system and the second electronic control system.

3. The display device according to claim 1 or 2, characterized in that: The display device also includes an adhesive layer; The polarization adjustment device is bonded to the light-emitting side of the display image source via the adhesive layer.

4. The display device according to claim 3, characterized in that: The display image source includes a display panel and a quarter-wave plate, and the light emitted from the display panel is circularly polarized light; The display panel includes a third transparent substrate, a color resist layer, a fourth transparent substrate, and a circular polarizer stacked in sequence. The quarter-wave plate is stacked on the light-emitting side of the circular polarizer, and the polarization adjustment device is bonded to the light-emitting side of the quarter-wave plate through the adhesive layer.

5. The display device according to claim 3, characterized in that: The display image source includes a display panel and a linear polarizer; the light emitted from the display panel is unpolarized light. The display panel includes a third transparent substrate, a color resist layer, and a fourth transparent substrate arranged sequentially. The linear polarizer is connected to the light-emitting side of the fourth transparent substrate, and the polarization adjustment device is bonded to the light-emitting side of the linear polarizer through the adhesive layer.

6. The display device according to claim 1 or 2, characterized in that: The display image source is a micro-display image source; The display device further includes a projection lens, which is disposed on the light-emitting side of the polarization adjustment device; The initial image light emitted by the microdisplay image source is adjusted by the polarization adjustment device and then projected and displayed by the projection lens.

7. The display device according to claim 6, characterized in that: The micro-display image source includes a self-emissive silicon-based OLED chip that emits circularly polarized light and a quarter-wave plate; the quarter-wave plate is stacked on the light-emitting side of the silicon-based OLED chip; The silicon-based OLED chip includes a silicon substrate, a color resist layer, a fourth transparent substrate, and a circular polarizer stacked sequentially. The quarter-wave plate is stacked on the light-emitting side of the circular polarizer, and the quarter-wave plate and the polarization adjustment device are bonded together by an adhesive layer.

8. The display device according to claim 6, characterized in that: The microdisplay image source includes a red light-emitting diode, a green light-emitting diode, a blue light-emitting diode, a beam combining system, a light homogenizing system, a bending system, and an LCoS chip; The light emitted by the red, green, and blue LEDs passes sequentially through the beam combining system, the light homogenizing system, and the deflection system before being incident on the LCoS chip. After being emitted from the surface of the LCoS chip, the light passes through the deflection system again to generate the initial image light.

9. The display device according to claim 6, characterized in that: The microdisplay image source includes a red light-emitting diode, a green light-emitting diode, a blue light-emitting diode, a beam combining system, a light homogenizing system, a bending system, a DMD chip, and a linear polarizer; The linear polarizer is stacked on the light-incident side of the polarization adjustment device; The light emitted by the red, green, and blue LEDs passes sequentially through the beam combining system, the light homogenizing system, and the deflection system before being incident on the DMD chip. After being emitted from the surface of the DMD chip, the light passes through the deflection system again and is then polarized by the linear polarizer to generate the initial image light.

10. An imaging system, characterized by include: The display device according to any one of claims 1-9; and, 3D glasses, the 3D glasses including a first lens and a second lens; The polarization direction of the first lens is parallel to the first linearly polarized light, and the polarization direction of the second lens is parallel to the second linearly polarized light.

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