CN220232174U - Display device and display system - Google Patents

Abstract

The application discloses a display device and a display system. The display device includes: the display module is used for carrying out luminous display; the liquid crystal box is positioned at the light-emitting side of the display module and comprises a first structural layer, a second structural layer and liquid crystal molecules positioned between the first structural layer and the second structural layer, wherein a first electrode layer is arranged on the first structural layer, and a second electrode layer is arranged on the second structural layer; the power supply module provides voltage to form an electric field between the first structural layer and the second structural layer so as to change the arrangement direction of liquid crystal molecules; the liquid crystal molecules are cholesteric liquid crystal molecules, and the liquid crystal molecules are in a focal conic state, a nematic state or a plane texture state in an electric field, so that the display device respectively and correspondingly works in a wide-view angle mode, a narrow-view angle mode or a reflection mode. The display device is provided with the liquid crystal box at the light emitting side of the display module, and the working mode is conveniently switched by changing the arrangement direction of liquid crystal molecules, so that the display device can be well adapted to various application scenes.

Description

Display device and display system

Technical Field

The present utility model relates to the field of display technologies, and in particular, to a display device and a display system.

Background

In recent years, with the continuous progress and development of technology, display technologies such as liquid crystal display, organic electroluminescence display, laser display, and reflection display are becoming mature, and in combination with big data and artificial intelligence technologies, the display technologies are currently developed towards the direction of intelligence and diversification.

However, the current operation mode of the display device is too single, which makes it difficult to consider different usage scenarios.

Disclosure of Invention

In view of the foregoing, an object of the present utility model is to provide a display device and a display system.

According to an aspect of the present utility model, there is provided a display device including: the display module is used for performing luminous display; the liquid crystal box is positioned on the light emitting side of the display module and comprises a first structural layer, a second structural layer and liquid crystal molecules positioned between the first structural layer and the second structural layer, wherein a first electrode layer is arranged on the first structural layer, and a second electrode layer is arranged on the second structural layer; and a power supply module connected to the liquid crystal cell for supplying a voltage applied to the first electrode layer and the second electrode layer to form an electric field between the first structural layer and the second structural layer, changing an arrangement direction of the liquid crystal molecules; the display device is characterized in that the liquid crystal molecules are cholesteric liquid crystal molecules, when the liquid crystal molecules are in a focal conic state in the electric field, the display device works in a wide viewing angle mode, when the liquid crystal molecules are in a nematic state in the electric field, the display device works in a narrow viewing angle mode, and when the liquid crystal molecules are in a plane texture state in the electric field, the display device works in a reflection mode.

Optionally, the first structural layer further includes a first substrate, and the second structural layer further includes a second substrate, where the first substrate, the first electrode layer, the liquid crystal molecules, the second electrode layer, and the second substrate are sequentially arranged.

Optionally, the second substrate is an array substrate including a plurality of sub-pixels, each sub-pixel is provided with a pixel electrode and a thin film transistor, and the second electrode layer is used as the pixel electrode.

Optionally, the liquid crystal molecules are divided into a plurality of sub-pixels with different pitches, so that different sub-pixels reflect light with different wavelengths, wherein the plurality of sub-pixels include one or more of a sub-pixel reflecting red light, a sub-pixel emitting green light, and a sub-pixel reflecting blue light, so that the display device realizes red reflection, green reflection, blue reflection, or color reflection in the reflection mode.

Optionally, the display device includes a plurality of the liquid crystal cells, the plurality of liquid crystal cells form a liquid crystal combination, each of the liquid crystal cells includes a first structural layer, a second structural layer, and liquid crystal molecules located between the first structural layer and the second structural layer, wherein colors of the liquid crystal molecules in the liquid crystal cells are different, so that the display device realizes color reflection in the reflection mode.

Optionally, the display module is a liquid crystal display module (Liquid Crystal Module, LCM) or a Self-luminous display module (Self-illumination Display Module), and the Self-luminous display module is an Organic Light-Emitting Diode (OLED) display module, a Micro Light-Emitting Diode (Micro LED) display module, or a sub-millimeter Light-Emitting Diode (Mini LED) display module.

Optionally, the display module sequentially includes: the backlight module comprises a backlight module, a shutter film, a third substrate, liquid crystal molecules, a light filter layer and a fourth substrate.

Optionally, the display module further comprises an atomization layer positioned at one side or two sides of the shutter film; and/or each pixel in the liquid crystal box and each pixel in the display module are distributed in different pixel units.

Optionally, each gate line and each data line in the display module are straight lines parallel to each other, and each gate line and each data line in the liquid crystal box are broken lines.

According to a second aspect of the present utility model, there is provided a display system comprising: a display device as described above; and a driving chip connected to the display device.

The display device and the display system provided by the utility model are designed with a display framework of the display module and the liquid crystal box, and the working modes of the display device are controlled by utilizing different arrangement states of liquid crystal molecules, so that the working modes can be switched simply and conveniently, and the display device and the display system are used for various working scenes.

Furthermore, the display device and the display system realize reflective display and even full-color reflective display by designing the thin film transistor array on the liquid crystal box, and have the advantages of ultralow power consumption, low cost, light weight, low power consumption, good legibility in sunlight and the like.

Furthermore, the display device and the display system can avoid the light interference phenomenon in the narrow view angle mode by designing the atomization layer and the pixel multi-domain arrangement in the display module, thereby being beneficial to improving the display effect.

Drawings

The above and other objects, features and advantages of the present utility model will become more apparent from the following description of embodiments of the present utility model with reference to the accompanying drawings, in which:

FIG. 1 shows a liquid crystal molecular variation diagram of a liquid crystal cell in different modes according to an embodiment of the utility model;

fig. 2a and 2b show cross-sectional views of a display device according to a first embodiment of the present utility model in a narrow viewing angle mode and in a wide viewing angle mode, respectively;

fig. 3a, 3b and 3c show cross-sectional views of a display device according to a second embodiment of the present utility model in a reflective mode, a narrow viewing angle mode and a wide viewing angle mode, respectively;

fig. 4 shows a pixel layout of a display module and a liquid crystal cell in a display device according to a second embodiment of the present utility model;

fig. 5 shows a cross-sectional view of a display device according to a third embodiment of the present utility model;

fig. 6 shows a cross-sectional view of a display device according to a fourth embodiment of the present utility model;

fig. 7 shows a cross-sectional view of a display device according to a fifth embodiment of the present utility model;

fig. 8 shows a schematic diagram of a display system according to an embodiment of the utility model.

Detailed Description

The utility model will be described in more detail below with reference to the accompanying drawings. Like elements are denoted by like reference numerals throughout the various figures. For clarity, the various features of the drawings are not drawn to scale. Furthermore, some well-known portions may not be shown in the drawings.

Numerous specific details of the utility model, such as device structures, materials, dimensions, processing techniques and technologies, are set forth in the following description in order to provide a thorough understanding of the utility model. However, as will be understood by those skilled in the art, the present utility model may be practiced without these specific details.

It should be understood that a and B in the embodiments of the present application are connected/coupled, which means that a and B may be connected in series or parallel, or that a and B pass through other devices, which embodiments of the present application do not limit.

Embodiments of a display device and a display system provided in the present application will be described below with reference to the accompanying drawings.

Fig. 1 shows a liquid crystal molecular change diagram of a liquid crystal cell according to an embodiment of the present utility model in different modes.

As shown in fig. 1, the liquid crystal cell 110 includes a first structural layer 111, a second structural layer 112, and liquid crystal molecules 113 between the first structural layer 111 and the second structural layer 112, specifically, a first electrode layer 1112 is disposed on the first structural layer 111, a second electrode layer 1114 is disposed on the second structural layer 112, and when a voltage is applied to the first electrode layer 1112 on the first structural layer 111 and the second electrode layer 1114 on the second structural layer 112, an electric field is formed between the first structural layer 111 and the second structural layer 112 to change an arrangement direction of the liquid crystal molecules 113.

In this embodiment, the liquid crystal molecules 113 are, for example, cholesteric liquid crystal molecules or chiral liquid crystal molecules, and the chiral liquid crystal should exhibit cholesteric phase. Taking cholesteric liquid crystal molecules as an example, one of the most prominent features of the cholesteric liquid crystal phase change effect is bistable nature between 5V and 17V, and when no polarizer is used for observation, the liquid crystal cell 110 may be in a nematic transparent state, a cholesteric focal conic texture state, or a planar texture state in this region. Cholesteric liquid crystal molecules can exhibit both bistable states, focal conic texture and planar texture, with the range in which the two bistable states exist being the bistable range of non-zero electric fields.

Optionally, the first electrode layer 1112 disposed on the first structural layer 111 is located between the first substrate 1111 and the liquid crystal molecules 113, and the second electrode layer 1114 disposed on the second structural layer 112 is located between the second substrate 1113 and the liquid crystal molecules 113. A backlight module is further disposed below the liquid crystal cell 110, the first structural layer 111 is disposed away from the backlight module, and the second structural layer 112 is disposed close to the backlight module. The first substrate 1111 and the second substrate 1113 are insulating layers, for example, the first substrate 1111 and the second substrate 1113 may be made of transparent substrates such as glass, acrylic, and polycarbonate, and the first electrode layer 1112 and the second electrode layer 1114 are transparent Indium Tin Oxide (ITO) conductive films, for example.

Optionally, a peripheral trace is disposed on the periphery of the liquid crystal cell 110, and can be connected to a power supply module through a conductive pad to provide a power supply for the liquid crystal cell 110, wherein one end of the power supply is connected to the first electrode layer 1112 of the liquid crystal cell 110, and the other end is connected to the second electrode layer 1114, so as to form an electric field between the first structural layer 111 and the second structural layer 112 for the liquid crystal molecules to rotate to present different states.

When the liquid crystal cell 110 is in the initial state, the initial voltage is 0V, and the liquid crystal molecules 113 are in a stable P-plane texture state, so that the transmittance of the liquid crystal cell 110 is increased, a part of light entering the display device is reflected, and another part of light passes through the display device, and the light path can be seen in the arrow a direction in fig. 1.

When the voltage is switched from 0V to the pulse voltage, the liquid crystal molecules 113 are in a stable focal conic state, the incident light is diffusely scattered, and the display device is switched to a wide viewing angle mode. After the display device is switched to the wide viewing angle mode, if the voltage is turned off from the pulse voltage to 0V, the liquid crystal molecules 113 remain in the focal conic state, so that the display device remains in the wide viewing angle mode, and the optical path of the display device in the wide viewing angle mode can be seen in the direction of arrow b in fig. 1.

When the voltage is switched from the pulse voltage to a first level (for example, about 20V) or the voltage is directly increased from the initial voltage 0V to a second level (for example, 30V or less), the spiral structure is broken up, and the liquid crystal molecules 113 are all oriented in the electric field direction, that is, the liquid crystal molecules 113 are in a nematic state, so that the liquid crystal cell 110 becomes transparent, at this time, the light transmittance of the liquid crystal cell 110 in the wide viewing angle direction is reduced, the display device is switched to the narrow viewing angle mode, and the optical path of the display device in the narrow viewing angle mode can be seen in the arrow c direction in fig. 1.

In this embodiment, after the display device is switched to the narrow viewing angle mode, if the voltage is rapidly turned off from the second level to 0V, the liquid crystal molecules 113 are restored to the P-plane texture state, and the display device is switched from the narrow viewing angle mode to the reflective mode; if the voltage is slowly powered down from the first level to 0V, the liquid crystal molecules 113 return to the focal conic state, and the display device is switched from the narrow viewing angle mode to the wide viewing angle mode; if the voltage continues to increase and exceeds the predetermined value, the liquid crystal molecules 113 return to the focal conic state, and the display device switches from the narrow viewing angle mode to the wide viewing angle mode.

Fig. 2a and 2b show cross-sectional views of a display device according to a first embodiment of the present utility model in a narrow viewing angle mode and in a wide viewing angle mode, respectively.

As shown in fig. 2a and 2b, the display device 100 of this embodiment includes a liquid crystal cell 110, a display module 120, and a power supply module 130.

In this embodiment, the liquid crystal cell 110 includes a first structural layer 111, a second structural layer 112, and liquid crystal molecules 113 between the first structural layer 111 and the second structural layer 112, a first electrode layer 1112 disposed on the first structural layer 111 is disposed between the first substrate 1111 and the liquid crystal molecules 113, and a second electrode layer 1114 disposed on the second structural layer is disposed between the second substrate 1113 and the liquid crystal molecules 113, and when a voltage is applied to the first electrode layer 1112 and the second electrode layer 1114, an electric field is formed between the first structural layer 111 and the second structural layer 112 to change the arrangement direction of the liquid crystal molecules 113.

In this embodiment, the display module 120 includes a backlight module 121, a louver film 122, an array substrate 123, liquid crystal molecules, a filter layer 124, and a fourth substrate 125.

The light emitting effect of the backlight source of the backlight module 121 is closely related to the light emitting effect of the display device 100, and is a basis for enabling the display device to perform light emitting display. The backlight source of the backlight module 121 is a direct type backlight source or a side-in type backlight source, and the backlight module 121 may be a lamp panel structure with Micro-leds, which is not limited in sequence. The louver film 122 may also be a metal wire grid, and the louver film 122 is disposed on the light emitting side of the backlight, for receiving light from the backlight to provide a collimated light source. The array substrate 123, the liquid crystal molecules, the filter layer 124, and the fourth substrate 125 are sequentially arranged on the light emitting side of the louver film 122 for performing screen display.

The array substrate 123 is provided with a plurality of gate lines and data lines, the gate lines and the data lines are mutually insulated and crossed to define a plurality of sub-pixels, each sub-pixel is internally provided with a pixel electrode and a thin film transistor, and the pixel electrode is electrically connected with the gate lines and the data lines of the adjacent thin film transistors through the thin film transistors. The thin film transistor comprises a grid electrode, an active layer, a drain electrode and a source electrode, wherein the grid electrode and the grid electrode line are positioned on the same layer and are electrically connected, the grid electrode is isolated from the active layer through a grid insulating layer, the source electrode is electrically connected with the data line, and the drain electrode is electrically connected with the pixel electrode.

The filter layer 124 includes a plurality of color resists and a black matrix disposed between adjacent color resists, which may be red, green, and blue, and the black matrix is disposed between adjacent color resists for shading and preventing color mixing.

The power supply module 130 is connected to the liquid crystal cell 120, specifically, to the first electrode layer 1112 and the second electrode layer 1114 in the liquid crystal cell 120 and supplies a voltage to form an electric field between the first electrode layer 1112 and the second electrode layer 1114, thereby changing the arrangement direction of the liquid crystal molecules 113. The power supply module 130 may, for example, provide a dc voltage within a predetermined range, and a voltage between the voltage provided by the power supply module 130 and the arrangement direction of the liquid crystal molecules 113 may refer to fig. 1, which is not described herein.

As shown in fig. 2a, when the display device 100 is in the narrow viewing angle mode, the spiral structure of the liquid crystal molecules 113 is disassembled, the liquid crystal molecules 113 face the electric field direction, i.e., the liquid crystal molecules 113 are in a nematic state, and the display module 120 displays normally, so that the liquid crystal cell 110 becomes transparent, and at this time, the transmittance of the liquid crystal cell 110 in the wide viewing angle direction decreases, i.e., the display effect is best when viewed from the direction facing the display device 100, and the display effect is poor or even difficult to see when viewed from both sides of the display device 100.

As shown in fig. 2b, when the display device 100 is in the wide viewing angle mode, the liquid crystal molecules 113 are in a stable focal conic state, and the incident light is diffusely scattered, and at this time, a good display effect is obtained, whether it is viewed from a direction facing the display device 100 or from both sides of the display device 100.

Fig. 3a, 3b and 3c show cross-sectional views of a display device according to a second embodiment of the present utility model in a reflective mode, a narrow viewing angle mode and a wide viewing angle mode, respectively. Fig. 4 shows a pixel layout of a display module and a liquid crystal cell in a display device according to a second embodiment of the utility model.

As shown in fig. 3a, 3b and 3c, in this embodiment, the display device 200 includes a liquid crystal cell 210 and a display module 220. The liquid crystal cell 210 includes a first structural layer 211, a second structural layer 212, and liquid crystal molecules 213 between the first structural layer 211 and the second structural layer 212. The display module 220 includes a backlight module 221, a louver film 222, an array substrate 223, liquid crystal molecules, a filter layer 224, and a fourth substrate 225. The display device 200 of this embodiment has the same basic structure as the display device 100 shown in fig. 2a and 2b, and the same points will not be described here.

In this embodiment, the first structural layer 211 includes a first substrate 2111 and a first electrode layer 2112 between the first substrate 2111 and the liquid crystal molecules 213, and the second structural layer 212 includes a second substrate 2113 and a second electrode layer 2114 between the second substrate 2113 and the liquid crystal molecules 213.

In this embodiment, the second substrate 2113 is an array substrate, and the second electrode layer 2114 is a stripe electrode, which is correspondingly disposed in each sub-pixel. Specifically, the second substrate 2113 is provided with a plurality of gate lines and data lines, where the gate lines and the data lines are insulated from each other and cross each other to define a plurality of sub-pixels, and each sub-pixel is provided with a pixel electrode and a thin film transistor, and the pixel electrode is electrically connected to the gate lines and the data lines of the adjacent thin film transistors through the thin film transistor. The thin film transistor comprises a grid electrode, an active layer, a drain electrode and a source electrode, wherein the grid electrode and the grid electrode line are positioned on the same layer and are electrically connected, the grid electrode is isolated from the active layer through a grid insulating layer, the source electrode is electrically connected with the data line, and the drain electrode is electrically connected with the pixel electrode. The second electrode layer 2114 here is a pixel electrode.

As shown in fig. 3a, in the reflective mode of the display device 200, the liquid crystal molecules 213 are in a stable P-plane texture, no voltage is applied to the first electrode layer 2112 and the second electrode layer 2113, or the same voltage is applied to drive the liquid crystal cell 210, and after the voltage is applied, the partial voltage needs to be rapidly removed, so that the liquid crystal molecules 213 can be in a stable P-plane texture, and the incident light can be reflected on the P-plane texture of the liquid crystal molecules 213, thereby realizing reflective display. In the reflective mode, the display module 220 is turned off to save power consumption.

In this embodiment, the cholesteric liquid crystal may reflect monochromatic light of a corresponding wavelength, such as red, green, or blue light. The cholesteric liquid crystal may be set to sub-pixels with different pitches, so that the different sub-pixels reflect light with different wavelengths, and the sub-pixels with different pitches may include a sub-pixel that reflects red light, a sub-pixel that emits green light, and a sub-pixel that reflects blue light, so that color reflective display may be realized.

As shown in fig. 3b, when the display device 200 is in the narrow viewing angle mode, voltages are applied to the first electrode layer 2112 and the second electrode layer 2114, respectively, without interruption, and when the voltage difference between the first electrode layer 2112 and the second electrode layer 2114 is 20V to 30V, the helical structure of the liquid crystal molecules 213 is broken, and the liquid crystal molecules 213 are all oriented in the electric field direction, that is, the liquid crystal molecules 213 are in a nematic state, so that the liquid crystal cell 210 becomes transparent, and at this time, the light transmittance of the liquid crystal cell 210 in the wide viewing angle direction is reduced.

As shown in fig. 3c, when the display device 200 is in the wide viewing angle mode, voltages are applied to the first electrode layer 2112 and the second electrode layer 2114, respectively, and when the voltage difference between the first electrode layer 2112 and the second electrode layer 2114 is a pulse voltage less than 20V, the liquid crystal molecules 213 are in a stable focal conic state, and the incident light is diffusely scattered.

As shown in fig. 4, in order to avoid the light interference phenomenon between the liquid crystal cell 210 and the display module 220 in the transmissive mode, each pixel in the liquid crystal cell 210 and each pixel in the display module 220 are arranged to have different pixel unit distributions. For example, each gate line and each data line in the display module 220 are straight lines parallel to each other, and each gate line and each data line in the liquid crystal cell 210 are broken lines. In addition, each pixel in the liquid crystal cell 210 and each pixel in the display module 220 are designed to be multi-domain distribution. Specifically, one pixel in the liquid crystal cell 210 may correspond to a plurality of pixels (e.g., three pixels, i.e., R pixel, G pixel, B pixel) in the display module 220, so as to further improve the light interference phenomenon.

Fig. 5 shows a cross-sectional view of a display device according to a third embodiment of the utility model.

As shown in fig. 5, in this embodiment, the display device 300 includes a liquid crystal cell 310 and a display module 320. The liquid crystal cell 310 includes a first structural layer 311, a second structural layer 312, and liquid crystal molecules 313 between the first structural layer 311 and the second structural layer 312. The display module 320 includes a backlight module 321, a louver film 322, a third substrate 323, a liquid crystal molecule and filter layer 324, and a fourth substrate 325, wherein the third substrate 323 is an array substrate. The display device 300 of this embodiment has the same basic structure as the display device 200 shown in fig. 3a, 3b and 3c, and the same points will not be described here.

In this embodiment, in order to avoid the light interference phenomenon of the display module in the transmissive mode, the louver film 322 is disposed between the liquid crystal molecules and the filter layer 324 and the liquid crystal cell 310, and the first and second atomization layers 3221 and 3222 are respectively disposed at both sides of the louver film 322. Alternatively, the atomization layer may be disposed on one side of the louver film 322, or may be disposed at another location, for example, on the back side of the second structural layer 312. Note that the first atomization layer 3221 and the second atomization layer 3222 provided here prevent the louver film 322 from adsorbing the adsorbed watermark that appears on the liquid crystal cell or the display module 320.

Fig. 6 shows a cross-sectional view of a display device according to a fourth embodiment of the utility model.

As shown in fig. 6, in this embodiment, the display device 400 includes a liquid crystal cell set and a display module 420. The liquid crystal cell group includes a plurality of liquid crystal cells 410, and each liquid crystal cell 410 includes a first structural layer 411, a second structural layer 412, and liquid crystal molecules 413 between the first structural layer 411 and the second structural layer 412. The display module 420 includes a backlight module 421, a louver film 422, an array substrate 423, a liquid crystal molecule and filter layer 424, and a fourth substrate 425. The display device 400 of this embodiment has the same basic structure as the display device 200 shown in fig. 3a, 3b and 3c, and the same points will not be described here.

In this embodiment, the liquid crystal cell group includes a plurality of liquid crystal cells 410, and the color of the liquid crystal molecules 413 in each liquid crystal cell 410 is different. For example, the liquid crystal molecules 413 in the first layer liquid crystal cell 410 are red, the liquid crystal molecules 413 in the first layer liquid crystal cell 410 are green, and the liquid crystal molecules 413 in the first layer liquid crystal cell 410 are blue. The display device 400 of this embodiment can realize full-color reflection.

In this embodiment, the display device 400 further includes a power supply module 430, where the power supply module 430 includes, for example, a plurality of independent voltage output terminals, and may output a plurality of identical or different voltages, and each of the liquid crystal cells 410 is respectively connected to a corresponding voltage output terminal in the power supply module 430, so as to implement separate control for each of the liquid crystal cells 410. In other embodiments, the power supply module 430 provides a stable voltage, and the plurality of liquid crystal cells 410 are connected to the power supply module 430 in parallel to achieve synchronous control of the plurality of liquid crystal cells 410.

Fig. 7 shows a cross-sectional view of a display device according to a fifth embodiment of the present utility model.

As shown in fig. 7, in this embodiment, the display device 500 includes a liquid crystal cell set and a display module 520. The liquid crystal cell group includes a plurality of liquid crystal cells 510, and each liquid crystal cell 510 includes a first structural layer 511, a second structural layer 512, and liquid crystal molecules 513 between the first structural layer 511 and the second structural layer 512. In this embodiment, the louver film is disposed between the display module 520 and the liquid crystal cell group. The liquid crystal cell 510 of this embodiment has the same basic structure as the liquid crystal cell 410 shown in fig. 6, and the same points are not repeated here.

In this embodiment, the display module 520 is a self-luminous display, for example, the display module 520 is a light emitting diode display device, an organic light emitting diode display device, or a micro light emitting diode display device.

Taking an organic light emitting diode display device as an example, the organic light emitting diode display device includes a plurality of organic light emitting diodes 521 and a substrate 522 located at two sides of the organic light emitting diodes, wherein the plurality of organic light emitting diodes 521 are integrated in a chip, for example, and the plurality of organic light emitting diodes 521 are arranged in an array. The size of each organic light emitting diode 521 is several tens to several hundreds micrometers, and the colors of the organic light emitting diodes 521 are, for example, red, green, and blue.

Some examples of the display device of the embodiment of the present utility model are described above, however, the embodiment of the present utility model is not limited thereto, and other manners of expansion and modification are also possible.

For example, in fig. 2 a-7, there is a gap between the liquid crystal cell and the display module, and in practice, the liquid crystal cell and the display module may be adjacent to each other, or may be separated by other structural layers.

Also for example, in fig. 2 a-7, each structural layer contained in the liquid crystal cell, display module, may be configured as a flexible layer to implement a flexible display device.

Also, those of ordinary skill in the art will recognize that structures and methods of examples described in connection with the embodiments disclosed herein may be implemented using different configurations or adaptations of each structure or reasonable variations of that structure to achieve the described functionality, but such implementations should not be construed as outside the scope of the present application. Also, it should be understood that the connection relationship between the respective components of the amplifier of the foregoing drawings in the embodiments of the present application is illustrative and not limiting in any way.

Fig. 8 shows a schematic diagram of a display system according to an embodiment of the utility model.

As shown in fig. 8, the display system 10 according to the embodiment of the present utility model includes a display device 1 and a driving chip 2, where the structure of the display device 1 can refer to any one of the display devices shown in fig. 2a to 7, and the driving chip 2 is used for driving a plurality of micro light emitting diodes in the display device 1 to perform light emitting display. The driving chip 2 is integrated on, for example, a flexible printed circuit board to realize a flexible transparent display system.

In summary, the embodiment of the utility model provides a display device and a display system, which designs a display architecture of a display module and a liquid crystal box, and controls the working mode of the display device by using different arrangement states of liquid crystal molecules, so that the working mode can be simply switched, and the display device can be used in various working scenes.

In an alternative embodiment, by designing a thin film transistor array on a liquid crystal box, reflective display is realized, even full-color reflective display can be realized, and the display has the advantages of ultralow power consumption, low cost, light weight, low power consumption, good legibility in sunlight and the like.

In an alternative embodiment, by designing the atomizing layer in the display module and designing the pixel multi-domain arrangement, the optical interference phenomenon occurring in the transmission mode of the liquid crystal box and the display module can be avoided, which is beneficial to improving the display effect.

It should be noted that in this document relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.

Embodiments in accordance with the present utility model, as described above, are not intended to be exhaustive or to limit the utility model to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the utility model and the practical application, to thereby enable others skilled in the art to best utilize the utility model and various modifications as are suited to the particular use contemplated. The utility model is limited only by the claims and the full scope and equivalents thereof.

Claims (10)

1. A display device, comprising:

the display module is used for performing luminous display;

the liquid crystal box is positioned on the light emitting side of the display module and comprises a first structural layer, a second structural layer and liquid crystal molecules positioned between the first structural layer and the second structural layer, wherein a first electrode layer is arranged on the first structural layer, and a second electrode layer is arranged on the second structural layer; and

a power supply module connected to the liquid crystal cell for supplying a voltage applied to the first electrode layer and the second electrode layer to form an electric field between the first structural layer and the second structural layer, and changing an arrangement direction of the liquid crystal molecules;

the display device is characterized in that the liquid crystal molecules are cholesteric liquid crystal molecules, when the liquid crystal molecules are in a focal conic state in the electric field, the display device works in a wide viewing angle mode, when the liquid crystal molecules are in a nematic state in the electric field, the display device works in a narrow viewing angle mode, and when the liquid crystal molecules are in a plane texture state in the electric field, the display device works in a reflection mode.

2. The display device according to claim 1, wherein the first structural layer further comprises a first substrate, and the second structural layer further comprises a second substrate, and wherein the first substrate, the first electrode layer, the liquid crystal molecules, the second electrode layer, and the second substrate are sequentially arranged.

3. The display device according to claim 2, wherein the second substrate is an array substrate including a plurality of sub-pixels each having a pixel electrode and a thin film transistor provided therein, and the second electrode layer is the pixel electrode.

4. The display device of claim 1, wherein the liquid crystal molecules are divided into a plurality of sub-pixels of different pitches such that different ones of the sub-pixels reflect light of different wavelengths,

wherein the plurality of sub-pixels includes one or more of a red-reflecting sub-pixel, a green-emitting sub-pixel, and a blue-reflecting sub-pixel, such that the display device implements red reflection, green reflection, blue reflection, or color reflection in the reflection mode.

5. The display device of claim 4, wherein the display device comprises a plurality of the liquid crystal cells, the plurality of liquid crystal cells forming a group of liquid crystal cells, each of the liquid crystal cells comprising a first structural layer, a second structural layer, and liquid crystal molecules between the first structural layer and the second structural layer,

wherein the color of the liquid crystal molecules in each liquid crystal cell is different, so that the display device realizes color reflection in the reflection mode.

6. The display device of claim 1, wherein the display module is a liquid crystal display module or a self-luminous display module, and the self-luminous display module is an organic light emitting diode display module, a micro light emitting diode display module, or a sub-millimeter light emitting diode display module.

7. The display device of claim 1, wherein the display module comprises, in order: the backlight module comprises a backlight module, a shutter film, a third substrate, liquid crystal molecules, a light filter layer and a fourth substrate.

8. The display device of claim 7, wherein the display module further comprises an atomization layer on one or both sides of the louver film; and/or

And each pixel in the liquid crystal box and each pixel in the display module are distributed in different pixel units.

9. The display device according to claim 8, wherein each of the gate lines and the data lines in the display module are straight lines parallel to each other, and each of the gate lines and the data lines in the liquid crystal cell is a folding line.

10. A display system, comprising:

the display device according to any one of claims 1 to 9; and

and the driving chip is connected to the display device.