Display device and driving method therefor, and display apparatus

Abstract

A display device and a driving method therefor, and a display apparatus. The display device comprises: a light absorption layer (10) and a liquid crystal element layer (20), the liquid crystal element layer (20) comprising at least two stacked liquid crystal elements. Each liquid crystal element comprises: a first substrate (201), a reflective liquid crystal layer (203) and a second substrate (202). When the reflective liquid crystal layer of one liquid crystal element of the adjacent liquid crystal elements is in a reflective state, light reflected by the liquid crystal elements at least comprises left-handed polarized light; and when the reflective liquid crystal layer of the other liquid crystal element of the adjacent liquid crystal elements is in the reflective state, light reflected by the liquid crystal elements at least comprises right-handed polarized light.

Description

Display device, driving method thereof, and display apparatus Technical Field

[0001] The present disclosure relates to, but is not limited to, the field of display technology, and specifically to a display device and a driving method thereof, and a display apparatus. Background Art

[0002] Liquid crystal displays (LCDs) have rapidly developed due to their small size, low power consumption, and zero radiation. An LCD panel consists of a cell-aligned thin-film transistor (TFT) array substrate and a color filter (CF) substrate. Liquid crystal (LC) molecules are positioned between the array and CF substrates. Controlling the common electrode and pixel electrodes creates an electric field that drives the liquid crystal deflection, enabling grayscale display. The LC can be cholesteric. In this case, the LCD panel switches between reflective and focal conic states by driving the LC, and then displays the image in combination with the background color.

[0003] Summary of the Invention

[0004] The following is an overview of the subject matter described in detail in this disclosure. This overview is not intended to limit the scope of the claims.

[0005] In a first aspect, the present disclosure provides a display device comprising: a light absorbing layer and a liquid crystal element layer disposed on the light absorbing layer, the liquid crystal element layer comprising: at least two stacked liquid crystal elements, the liquid crystal element comprising: a first substrate, a reflective liquid crystal layer, and a second substrate, wherein the first substrate is located on a side of the reflective liquid crystal layer close to the light absorbing layer, and the second substrate is located on a side of the reflective liquid crystal layer away from the light absorbing layer;

[0006] The working states of the reflective liquid crystal layer include: a reflective state and a focal conic state;

[0007] When the reflective liquid crystal layer of one of the adjacent liquid crystal elements is in a reflective state, the light reflected by the liquid crystal element includes at least left-handed polarized light, and when the reflective liquid crystal layer of the other of the adjacent liquid crystal elements is in a reflective state, the light reflected by the liquid crystal element includes at least right-handed polarized light.

[0008] In an exemplary embodiment, the first substrate includes: a first base and a first electrode layer, the second substrate includes: a second base and a second electrode layer, the first electrode layer is located on a side of the first substrate close to the reflective liquid crystal layer, and the second electrode layer is located on a side of the second substrate close to the reflective liquid crystal layer, and the first substrate includes: data signal lines and scan signal lines;

[0009] The data signal lines and the scan signal lines intersect to define a plurality of sub-pixels, the first electrode layer includes: first electrodes arranged in an array, the second electrode layer includes: second electrodes, the reflective liquid crystal layer includes: liquid crystal, the sub-pixels include the first electrode, the liquid crystal, and the second electrode, and the first electrode and the second electrode are transparent electrodes;

[0010] An orthographic projection of the first electrode on the first substrate at least partially overlaps with an orthographic projection of the second electrode on the first substrate.

[0011] In an exemplary embodiment, the wavelength L of light reflected by the liquid crystal in the reflective liquid crystal layer and the distance P between the first electrode and the second electrode of the sub-pixel where the liquid crystal is located satisfy the formula: L = n*t*P, where n is the average refractive index of the liquid crystal, and t is the ratio of the pitch of the liquid crystal to the distance between the first electrode and the second electrode of any sub-pixel in the liquid crystal element.

[0012] In an exemplary embodiment, the liquid crystal element reflects light of one color, the liquid crystal is one of a left-handed cholesteric liquid crystal or a right-handed cholesteric liquid crystal, and when the liquid crystal element reflects left-handed polarized light, the liquid crystal is a left-handed cholesteric liquid crystal, and when the liquid crystal element reflects right-handed polarized light, the liquid crystal is a right-handed cholesteric liquid crystal;

[0013] The liquid crystals of all sub-pixels are the same, the surface of the first substrate close to the reflective liquid crystal layer is flat, and the distances between the first electrodes and the second electrodes of any two sub-pixels in all sub-pixels are equal.

[0014] In an exemplary embodiment, the liquid crystal element reflects two colors of light, and the liquid crystal includes: a first liquid crystal and a second liquid crystal, the first liquid crystal and the second liquid crystal are one of a left-handed cholesteric liquid crystal or a right-handed cholesteric liquid crystal, and the first liquid crystal and the second liquid crystal are configured to reflect light of different wavelengths;

[0015] The sub-pixels in the liquid crystal element are arranged in an array along a first direction and a second direction, the first direction and the second direction intersecting; the liquid crystal of one of the two sub-pixels arranged along the first direction is a first liquid crystal, and the liquid crystal of the other of the two sub-pixels arranged along the first direction is a second liquid crystal; the liquid crystal of one of the two sub-pixels arranged along the second direction is a first liquid crystal, and the liquid crystal of the other of the two sub-pixels arranged along the second direction is a second liquid crystal;

[0016] The surface of the first substrate close to the reflective liquid crystal layer is uneven, and the distance between the first electrode and the second electrode of the sub-pixel where the first liquid crystal is located is not equal to the distance between the first electrode and the second electrode of the sub-pixel where the second liquid crystal is located;

[0017] When the liquid crystal element reflects left-handed polarized light, the first liquid crystal and the second liquid crystal are left-handed cholesteric liquid crystals; when the liquid crystal element reflects right-handed polarized light, the first liquid crystal and the second liquid crystal are right-handed cholesteric liquid crystals; when the liquid crystal element reflects left-handed polarized light and right-handed polarized light, one of the first liquid crystal and the second liquid crystal is a left-handed cholesteric liquid crystal, and the other of the first liquid crystal and the second liquid crystal is a right-handed cholesteric liquid crystal.

[0018] In an exemplary embodiment, the at least two liquid crystal elements include: a first liquid crystal element and a second liquid crystal element;

[0019] When the reflective liquid crystal layer of the first liquid crystal element is in a reflective state, the first liquid crystal element reflects light of a first color. When the reflective liquid crystal layer of the second liquid crystal element is in a reflective state, the second liquid crystal element reflects light of a second color.

[0020] In an exemplary embodiment, the first color and the second color are different, and a superimposed color of the first color and the second color is white;

[0021] When the wavelength of the first color is greater than that of the second color, the distance between the first electrode and the second electrode of any subpixel in the first liquid crystal element is greater than the distance between the first electrode and the second electrode of any subpixel in the second liquid crystal element.

[0022] In an exemplary embodiment, the first color is red and the second color is cyan;

[0023] The distance between the first electrode and the second electrode of any sub-pixel in the first liquid crystal element is in a range of 5.8 μm to 6.2 μm;

[0024] The distance between the first electrode and the second electrode of any sub-pixel in any sub-pixel of the second liquid crystal element is in a range of 3.8 μm to 4.2 μm;

[0025] Alternatively, the first color is yellow and the second color is blue;

[0026] The distance between the first electrode and the second electrode of any sub-pixel in the first liquid crystal element is in a range of 4.8 μm to 5.2 μm;

[0027] The distance between the first electrode and the second electrode of any sub-pixel in the second liquid crystal element is in a range of 3.8 micrometers to 4.2 micrometers.

[0028] In an exemplary embodiment, the first color and the second color are the same;

[0029] A distance between the first electrode and the second electrode of any sub-pixel in the first liquid crystal element is the same as a distance between the first electrode and the second electrode of any sub-pixel in the second liquid crystal element.

[0030] In an exemplary embodiment, the at least two liquid crystal elements further include: the third liquid crystal element;

[0031] When the reflective liquid crystal layer of the third liquid crystal element is in a reflective state, the third liquid crystal element reflects light of a third color;

[0032] The first color, the second color, and the third color are different colors, and a superimposed color of the first color, the second color, and the third color is white.

[0033] In an exemplary embodiment, any two of the distance between the first electrode and the second electrode of any sub-pixel in the first liquid crystal element, the distance between the first electrode and the second electrode of any sub-pixel in the second liquid crystal element, and the distance between the first electrode and the second electrode of any sub-pixel in the third liquid crystal element are different.

[0034] In an exemplary embodiment, the first color is red, the second color is green, and the third color is blue;

[0035] The distance between the first electrode and the second electrode of any sub-pixel in the first liquid crystal element is in a range of 5.8 μm to 6.2 μm;

[0036] The distance between the first electrode and the second electrode of any sub-pixel in the second liquid crystal element is in a range of 4.8 μm to 5.2 μm;

[0037] The distance between the first electrode and the second electrode of any sub-pixel in the third liquid crystal element is in a range of 3.8 micrometers to 4.2 micrometers.

[0038] In an exemplary embodiment, the at least two liquid crystal elements include: a first liquid crystal element and a second liquid crystal element;

[0039] The first liquid crystal in the first liquid crystal element and the first liquid crystal in the second liquid crystal element are liquid crystals of a first color, and the second liquid crystal in the first liquid crystal element and the second liquid crystal in the second liquid crystal element are liquid crystals of a second color;

[0040] The first liquid crystal and the second liquid crystal in the first liquid crystal element are L-cholesteric liquid crystals, and the first liquid crystal and the second liquid crystal in the second liquid crystal element are D-cholesteric liquid crystals; or, the first liquid crystal and the second liquid crystal in the first liquid crystal element are D-cholesteric liquid crystals, and the first liquid crystal and the second liquid crystal in the second liquid crystal element are L-cholesteric liquid crystals; or, the first liquid crystal in the first liquid crystal element is L-cholesteric liquid crystal, and the second liquid crystal in the first liquid crystal element is D-cholesteric, and the first liquid crystal in the second liquid crystal element is D-cholesteric, and the second liquid crystal in the second liquid crystal element is L-cholesteric; or, the first liquid crystal in the first liquid crystal element is D-cholesteric liquid crystal, and the second liquid crystal in the first liquid crystal element is L-cholesteric, and the first liquid crystal in the second liquid crystal element is L-cholesteric, and the second liquid crystal in the second liquid crystal element is D-cholesteric;

[0041] The first color liquid crystal and the second color liquid crystal are liquid crystals of different colors, and the superimposed color of the color of the light reflected by the first color liquid crystal and the color of the light reflected by the second color liquid crystal is white.

[0042] In an exemplary embodiment, a distance between a first electrode and a second electrode of a sub-pixel where the first liquid crystal in the first liquid crystal element is located is the same as a distance between a first electrode and a second electrode of a sub-pixel where the first liquid crystal in the second liquid crystal element is located;

[0043] The distance between the first electrode and the second electrode of the sub-pixel where the second liquid crystal in the first liquid crystal element is located is the same as the distance between the first electrode and the second electrode of the sub-pixel where the second liquid crystal in the second liquid crystal element is located.

[0044] In an exemplary embodiment, when the first color liquid crystal and the second color liquid crystal are one of red cholesteric liquid crystal and cyan cholesteric liquid crystal, the distance between the first electrode and the second electrode of the sub-pixel where the liquid crystal reflecting red light is located is greater than the distance between the first electrode and the second electrode of the sub-pixel where the liquid crystal reflecting cyan light is located;

[0045] When the first color liquid crystal and the second color liquid crystal are one of yellow cholesteric liquid crystal and blue cholesteric liquid crystal, the distance between the first electrode and the second electrode of the sub-pixel where the liquid crystal reflecting yellow light is located is greater than the distance between the first electrode and the second electrode of the sub-pixel where the liquid crystal reflecting blue light is located.

[0046] In an exemplary embodiment, an orthographic projection of a subpixel including a first liquid crystal in the first liquid crystal element on the light absorption layer at least partially overlaps with an orthographic projection of a subpixel including the first liquid crystal in the second liquid crystal element on the light absorption layer, and has no overlapping region with an orthographic projection of a subpixel including a second liquid crystal in the second liquid crystal element on the light absorption layer;

[0047] The orthographic projection of the sub-pixel including the second liquid crystal in the first liquid crystal element on the light absorbing layer at least partially overlaps with the orthographic projection of the sub-pixel including the second liquid crystal in the second liquid crystal element on the light absorbing layer, and there is no overlapping area with the orthographic projection of the sub-pixel including the first liquid crystal in the second liquid crystal element on the light absorbing layer.

[0048] In an exemplary embodiment, the at least two liquid crystal elements include: a first liquid crystal element, a second liquid crystal element, and a third liquid crystal element;

[0049] The first liquid crystal in the first liquid crystal element and the first liquid crystal in the second liquid crystal element are liquid crystals of a first color, the second liquid crystal in the first liquid crystal element and the first liquid crystal in the third liquid crystal element are liquid crystals of a second color, and the second liquid crystal in the second liquid crystal element and the second liquid crystal in the third liquid crystal element are liquid crystals of a third color;

[0050] One of the first liquid crystal in the first liquid crystal element and the first liquid crystal in the second liquid crystal element is a levorotatory cholesteric liquid crystal, the other of the first liquid crystal in the first liquid crystal element and the first liquid crystal in the second liquid crystal element is a dextrorotatory cholesteric liquid crystal, the second liquid crystal in the first liquid crystal element and one of the first liquid crystals in the third liquid crystal element are levorotatory cholesteric liquid crystals, the second liquid crystal in the first liquid crystal element and one of the first liquid crystals in the third liquid crystal element are dextrorotatory cholesteric liquid crystals, the second liquid crystal in the second liquid crystal element and one of the second liquid crystals in the third liquid crystal element are levorotatory cholesteric liquid crystals, the second liquid crystal in the second liquid crystal element and the other of the second liquid crystals in the third liquid crystal element are dextrorotatory cholesteric liquid crystals, the first and second liquid crystals in the first liquid crystal element are levorotatory cholesteric liquid crystals or dextrorotatory cholesteric liquid crystals, one of the first and second liquid crystals in the second liquid crystal element is a levorotatory cholesteric liquid crystal, the other of the first and second liquid crystals in the second liquid crystal element is a dextrorotatory cholesteric liquid crystal, and the first and second liquid crystals in the third liquid crystal element are levorotatory cholesteric liquid crystals or dextrorotatory cholesteric liquid crystals;

[0051] The first color liquid crystal, the second color liquid crystal and the third color liquid crystal are liquid crystals of different colors, and the superimposed color of the light reflected by the first color liquid crystal, the light reflected by the second color liquid crystal and the light reflected by the third color liquid crystal is white.

[0052] In an exemplary embodiment, a distance between a first electrode and a second electrode of a sub-pixel where the first liquid crystal in the first liquid crystal element is located is the same as a distance between a first electrode and a second electrode of a sub-pixel where the first liquid crystal in the second liquid crystal element is located;

[0053] The distance between the first electrode and the second electrode of the sub-pixel where the second liquid crystal in the first liquid crystal element is located is the same as the distance between the first electrode and the second electrode of the sub-pixel where the first liquid crystal in the third liquid crystal element is located;

[0054] The distance between the first electrode and the second electrode of the sub-pixel where the second liquid crystal in the second liquid crystal element is located is the same as the distance between the first electrode and the second electrode of the sub-pixel where the second liquid crystal in the third liquid crystal element is located.

[0055] In an exemplary embodiment, the first color liquid crystal, the second color liquid crystal, and the third color liquid crystal are one of red cholesteric liquid crystal, green cholesteric liquid crystal, and blue cholesteric liquid crystal;

[0056] The distance between the first electrode and the second electrode of the sub-pixel where the red cholesteric liquid crystal is located is greater than the distance between the first electrode and the second electrode of the sub-pixel where the green cholesteric liquid crystal is located, and the distance between the first electrode and the second electrode of the sub-pixel where the green cholesteric liquid crystal is located is greater than the distance between the first electrode and the second electrode of the sub-pixel where the blue cholesteric liquid crystal is located.

[0057] In an exemplary embodiment, the distance between the first electrode and the second electrode of the sub-pixel where the red cholesteric liquid crystal is located ranges from 5.8 micrometers to 6.2 micrometers;

[0058] The distance between the first electrode and the second electrode of the sub-pixel where the green cholesteric liquid crystal is located ranges from 4.8 micrometers to 5.2 micrometers;

[0059] The distance between the first electrode and the second electrode of the sub-pixel where the blue cholesteric liquid crystal is located ranges from 3.8 micrometers to 4.2 micrometers.

[0060] In an exemplary embodiment, the liquid crystal element further includes: an isolation structure and a sealant disposed between the first substrate and the second substrate, and the reflective liquid crystal layer is filled in a region enclosed by the sealant, the first substrate, and the second substrate;

[0061] The isolation structure divides the area enclosed by the frame sealing glue, the first substrate and the second substrate into a first area and a second area. The first area and the second area are independent of each other. The frame sealing glue is provided with a first crystal filling port and a second crystal filling port. The first crystal filling port is configured to fill the first liquid crystal into one of the first area and the second area, and the second crystal filling port is configured to fill the second liquid crystal into the other of the first area and the second area. The liquid crystals in the first area are interconnected, and the liquid crystals in the second area are interconnected.

[0062] In an exemplary embodiment, the isolation structure includes: a first connection portion, a second connection portion, N third connection portions, and N-1 fourth connection portions, where N is a positive integer greater than or equal to 2;

[0063] The first connection portion, the second connection portion, and the fourth connection portion extend along a first direction, the third connection portion extends along a second direction, and the first direction and the second direction intersect;

[0064] One end of the first connecting portion is connected to the middle portion of the first inner wall of the frame sealant, the other end of the first connecting portion is connected to the middle portion of the first third connecting portion, one end of the first third connecting portion is connected to one end of the first fourth connecting portion, the other end of the first fourth connecting portion is connected to one end of the second third connecting portion, the other end of the i-th third connecting portion is connected to one end of the i-th fourth connecting portion, the other end of the i-th fourth connecting portion is connected to one end of the i+1-th third connecting portion, one end of the second connecting portion is connected to the middle portion of the second inner wall of the frame sealant, and the other end of the second connecting portion is connected to the middle portion of the N-th third connecting portion; the first inner wall and the second inner wall are arranged opposite to each other, 2≤i≤N-1;

[0065] A length of the third connection portion along the second direction is greater than a length of any one of the first connection portion, the second connection portion, and the fourth connection portion along the first direction.

[0066] In an exemplary embodiment, further comprising: a protective cover;

[0067] The protective cover is located on a side of the liquid crystal element layer away from the light absorbing layer.

[0068] In an exemplary embodiment, the distance between the protective cover and the liquid crystal element layer ranges from 1 mm to 1.5 mm;

[0069] The haze of the protective cover is in a range of 10% to 15%.

[0070] In an exemplary embodiment, liquid crystals of the reflective liquid crystal layer reflecting left-handedly deflected light in a reflective state are doped with a left-handed chiral agent, and liquid crystals of the reflective liquid crystal layer reflecting right-handedly deflected light in a reflective state are doped with a right-handed chiral agent.

[0071] In an exemplary embodiment, the reflective liquid crystal layer further includes an acrylic polymer, wherein the content of the acrylic polymer ranges from 3% to 5%.

[0072] In an exemplary embodiment, the second substrate includes: a black matrix layer, an orthographic projection of the black matrix layer on the first substrate at least partially overlapping with an orthographic projection of the data signal line and the scan signal line on the first substrate;

[0073] The black matrix layer includes: a first black matrix structure and a second black matrix structure, wherein the orthographic projection of the first black matrix structure on the light absorbing layer at least partially overlaps with the orthographic projection of the data signal line on the light absorbing layer, and the orthographic projection of the second black matrix structure on the light absorbing layer at least partially overlaps with the orthographic projection of the scan signal line on the light absorbing layer;

[0074] A first distance is defined as a distance between an orthographic projection of the first black matrix structure on the light absorbing layer and an orthographic projection of the first electrode of any one of two adjacent sub-pixels located on either side of the data signal line. A second distance is defined as a distance between an orthographic projection of the second black matrix structure on the light absorbing layer and an orthographic projection of the first electrode of any one of two adjacent sub-pixels located on either side of the scan signal line. The first distance is greater than the second distance.

[0075] The distance between the orthographic projection of the boundary of one of the two adjacent sub-pixels located on both sides of the data signal line close to the data signal line on the light absorption layer and the orthographic projection of the boundary of the other sub-pixel located on both sides of the data signal line close to the first black matrix structure on the light absorption layer is greater than the alignment deviation of the adjacent liquid crystal elements;

[0076] The distance between the orthographic projection of the boundary of one of the two adjacent sub-pixels located on both sides of the scanning signal line near the scanning signal line on the light absorbing layer and the orthographic projection of the boundary of the other sub-pixel located on both sides of the scanning signal line near the second black matrix structure on the light absorbing layer is greater than the fitting deviation of adjacent liquid crystal elements.

[0077] In an exemplary embodiment, the alignment deviation of adjacent liquid crystal cells is less than or equal to 5 micrometers.

[0078] In an exemplary embodiment, the liquid crystal element further includes: a driver;

[0079] The driver is disposed on the first substrate, and is configured to provide a signal to the first substrate and the second substrate so that the reflective liquid crystal layer switches between a focal conic state and a reflective state;

[0080] An orthographic projection of the second substrate on the first base and an orthographic projection of the driver on the first base do not overlap with each other.

[0081] In a second aspect, the present disclosure further provides a display device, comprising: the above-mentioned display device.

[0082] In a third aspect, the present disclosure further provides a method for driving a display device, configured to drive the above-mentioned display device, the method comprising:

[0083] Signals are provided to the first substrate and the second substrate of the at least two liquid crystal elements so that the reflective liquid crystal layers of the at least two liquid crystal elements are switched between a focal conic state and a reflective state.

[0084] In an exemplary embodiment, the at least two liquid crystal elements include: a first liquid crystal element and a second liquid crystal element, the first liquid crystal element reflects a first color light, the second liquid crystal element reflects a second color light, and the first color and the second color are different;

[0085] The providing signals to the first substrate and the second substrate of the at least two liquid crystal elements so that the reflective liquid crystal layers of the at least two liquid crystal elements switch between the focal conic state and the reflective state comprises:

[0086] providing a signal to the first substrate and the second substrate of the first liquid crystal element so that the reflective liquid crystal layer of the first liquid crystal element is in a focal conic state, and providing a signal to the first substrate and the second substrate of the second liquid crystal element so that the reflective liquid crystal layer of the second liquid crystal element is in a focal conic state, and the display device displays black;

[0087] providing a signal to the first substrate and the second substrate of the first liquid crystal element so that the reflective liquid crystal layer of the first liquid crystal element is in a reflective state, and providing a signal to the first substrate and the second substrate of the second liquid crystal element so that the reflective liquid crystal layer of the second liquid crystal element is in a focal conic state, so that the display device displays a first color;

[0088] providing a signal to the first substrate and the second substrate of the first liquid crystal element so that the reflective liquid crystal layer of the first liquid crystal element is in a focal conic state, and providing a signal to the first substrate and the second substrate of the second liquid crystal element so that the reflective liquid crystal layer of the second liquid crystal element is in a reflective state, so that the display device displays a second color;

[0089] Signals are provided to the first substrate and the second substrate of the first liquid crystal element so that the reflective liquid crystal layer of the first liquid crystal element is in a reflective state, and signals are provided to the first substrate and the second substrate of the second liquid crystal element so that the reflective liquid crystal layer of the second liquid crystal element is in a reflective state, and the display device displays a superimposed color of the first color and the second color.

[0090] In an exemplary embodiment, the at least two liquid crystal elements include: a first liquid crystal element, a second liquid crystal element, and a third liquid crystal element, the first liquid crystal element reflects a first color light, the second liquid crystal element reflects a second color light, and the third liquid crystal element reflects a third color light, and any two of the first color, the second color, and the third color are different;

[0091] The providing signals to the first substrate and the second substrate of the at least two liquid crystal elements so that the reflective liquid crystal layers of the at least two liquid crystal elements switch between the focal conic state and the reflective state comprises:

[0092] providing a signal to the first substrate and the second substrate of the first liquid crystal element so that the reflective liquid crystal layer of the first liquid crystal element is in a focal conic state, providing a signal to the first substrate and the second substrate of the second liquid crystal element so that the reflective liquid crystal layer of the second liquid crystal element is in a focal conic state, providing a signal to the first substrate and the second substrate of the third liquid crystal element so that the reflective liquid crystal layer of the third liquid crystal element is in a focal conic state, and the display device displays black;

[0093] providing a signal to the first substrate and the second substrate of the first liquid crystal element so that the reflective liquid crystal layer of the first liquid crystal element is in a reflective state, providing a signal to the first substrate and the second substrate of the second liquid crystal element so that the reflective liquid crystal layer of the second liquid crystal element is in a focal conic state, and providing a signal to the first substrate and the second substrate of the third liquid crystal element so that the reflective liquid crystal layer of the third liquid crystal element is in a focal conic state, so that the display device displays a first color;

[0094] providing a signal to the first substrate and the second substrate of the first liquid crystal element so that the reflective liquid crystal layer of the first liquid crystal element is in a focal conic state, providing a signal to the first substrate and the second substrate of the second liquid crystal element so that the reflective liquid crystal layer of the second liquid crystal element is in a reflective state, providing a signal to the first substrate and the second substrate of the third liquid crystal element so that the reflective liquid crystal layer of the third liquid crystal element is in a focal conic state, and the display device displays a second color;

[0095] providing a signal to the first substrate and the second substrate of the first liquid crystal element so that the reflective liquid crystal layer of the first liquid crystal element is in a focal conic state, providing a signal to the first substrate and the second substrate of the second liquid crystal element so that the reflective liquid crystal layer of the second liquid crystal element is in a focal conic state, providing a signal to the first substrate and the second substrate of the third liquid crystal element so that the reflective liquid crystal layer of the third liquid crystal element is in a reflective state, and the display device displays a third color;

[0096] providing a signal to the first substrate and the second substrate of the first liquid crystal element so that the reflective liquid crystal layer of the first liquid crystal element is in a reflective state, providing a signal to the first substrate and the second substrate of the second liquid crystal element so that the reflective liquid crystal layer of the second liquid crystal element is in a reflective state, and providing a signal to the first substrate and the second substrate of the third liquid crystal element so that the reflective liquid crystal layer of the third liquid crystal element is in a focal conic state, so that the display device displays a superimposed color of the first color and the second color;

[0097] providing a signal to the first substrate and the second substrate of the first liquid crystal element so that the reflective liquid crystal layer of the first liquid crystal element is in a reflective state, providing a signal to the first substrate and the second substrate of the second liquid crystal element so that the reflective liquid crystal layer of the second liquid crystal element is in a focal conic state, and providing a signal to the first substrate and the second substrate of the third liquid crystal element so that the reflective liquid crystal layer of the third liquid crystal element is in a reflective state, so that the display device displays a superimposed color of the first color and the third color;

[0098] providing a signal to the first substrate and the second substrate of the first liquid crystal element so that the reflective liquid crystal layer of the first liquid crystal element is in a focal conic state, providing a signal to the first substrate and the second substrate of the second liquid crystal element so that the reflective liquid crystal layer of the second liquid crystal element is in a reflective state, and providing a signal to the first substrate and the second substrate of the third liquid crystal element so that the reflective liquid crystal layer of the third liquid crystal element is in a reflective state, so that the display device displays a superimposed color of the second color and the third color;

[0099] A signal is provided to the first substrate and the second substrate of the first liquid crystal element so that the reflective liquid crystal layer of the first liquid crystal element is in a reflective state, a signal is provided to the first substrate and the second substrate of the second liquid crystal element so that the reflective liquid crystal layer of the second liquid crystal element is in a reflective state, and a signal is provided to the first substrate and the second substrate of the third liquid crystal element so that the reflective liquid crystal layer of the third liquid crystal element is in a reflective state, and the display device displays a superimposed color of the first color, the second color and the third color.

[0100] In an exemplary embodiment, the at least two liquid crystal elements include: a first liquid crystal element and a second liquid crystal element, the first liquid crystal in the first liquid crystal element and the first liquid crystal in the second liquid crystal element are liquid crystals of a first color, the second liquid crystal in the first liquid crystal element and the second liquid crystal in the second liquid crystal element are liquid crystals of a second color, and the first color liquid crystal and the second color liquid crystal are liquid crystals of different colors;

[0101] The providing signals to the first substrate and the second substrate of the at least two liquid crystal elements so that the reflective liquid crystal layers of the at least two liquid crystal elements switch between the focal conic state and the reflective state comprises:

[0102] providing signals to the first substrate and the second substrate of the first liquid crystal element so that the first liquid crystal and the second liquid crystal in the reflective liquid crystal layer of the first liquid crystal element are in a focal conic state, and providing signals to the first substrate and the second substrate of the second liquid crystal element so that the first liquid crystal and the second liquid crystal in the reflective liquid crystal layer of the second liquid crystal element are in a focal conic state, and the display device displays black;

[0103] providing signals to the first substrate and the second substrate of the first liquid crystal element so that the first liquid crystal in the reflective liquid crystal layer of the first liquid crystal element is in a reflective state and the second liquid crystal is in a focal conic state, and providing signals to the first substrate and the second substrate of the second liquid crystal element so that the first liquid crystal in the reflective liquid crystal layer of the second liquid crystal element is in a reflective state and the second liquid crystal is in a focal conic state, and the display device displays a first color;

[0104] providing a signal to the first substrate and the second substrate of the first liquid crystal element so that the first liquid crystal in the reflective liquid crystal layer of the first liquid crystal element is in a focal conic state and the second liquid crystal is in a reflective state, and providing a signal to the first substrate and the second substrate of the second liquid crystal element so that the first liquid crystal in the reflective liquid crystal layer of the second liquid crystal element is in a focal conic state and the second liquid crystal is in a reflective state, and the display device displays a second color;

[0105] Signals are provided to the first substrate and the second substrate of the first liquid crystal element so that the first liquid crystal and the second liquid crystal in the reflective liquid crystal layer of the first liquid crystal element are in a reflective state, and signals are provided to the first substrate and the second substrate of the second liquid crystal element so that the first liquid crystal and the second liquid crystal in the reflective liquid crystal layer of the second liquid crystal element are in a reflective state, and the display device displays a superimposed color of the first color and the second color.

[0106] In an exemplary embodiment, the at least two liquid crystal elements include: a first liquid crystal element, a second liquid crystal element, and a third liquid crystal element, the first liquid crystal in the first liquid crystal element and the first liquid crystal in the second liquid crystal element are liquid crystals of a first color, the second liquid crystal in the first liquid crystal element and the first liquid crystal in the third liquid crystal element are liquid crystals of a second color, and the second liquid crystal in the second liquid crystal element and the second liquid crystal in the third liquid crystal element are liquid crystals of a third color;

[0107] The providing signals to the first substrate and the second substrate of the at least two liquid crystal elements so that the reflective liquid crystal layers of the at least two liquid crystal elements switch between the focal conic state and the reflective state comprises:

[0108] providing a signal to the first substrate and the second substrate of the first liquid crystal element so that the first liquid crystal and the second liquid crystal in the reflective liquid crystal layer of the first liquid crystal element are in a focal conic state, providing a signal to the first substrate and the second substrate of the second liquid crystal element so that the first liquid crystal and the second liquid crystal in the reflective liquid crystal layer of the second liquid crystal element are in a focal conic state, providing a signal to the first substrate and the second substrate of the third liquid crystal element so that the first liquid crystal and the second liquid crystal in the reflective liquid crystal layer of the third liquid crystal element are in a focal conic state, and the display device displays black;

[0109] providing a signal to the first substrate and the second substrate of the first liquid crystal element so that the first liquid crystal in the reflective liquid crystal layer of the first liquid crystal element is in a reflective state and the second liquid crystal is in a focal conic state; providing a signal to the first substrate and the second substrate of the second liquid crystal element so that the first liquid crystal in the reflective liquid crystal layer of the second liquid crystal element is in a reflective state and the second liquid crystal is in a focal conic state; providing a signal to the first substrate and the second substrate of the third liquid crystal element so that the first liquid crystal and the second liquid crystal in the reflective liquid crystal layer of the third liquid crystal element are in a focal conic state, and the display device displays a first color;

[0110] providing a signal to the first substrate and the second substrate of the first liquid crystal element so that the first liquid crystal in the reflective liquid crystal layer of the first liquid crystal element is in a focal conic state and the second liquid crystal is in a reflective state, providing a signal to the first substrate and the second substrate of the second liquid crystal element so that the first liquid crystal and the second liquid crystal in the reflective liquid crystal layer of the second liquid crystal element are in a focal conic state, providing a signal to the first substrate and the second substrate of the third liquid crystal element so that the first liquid crystal in the reflective liquid crystal layer of the third liquid crystal element is in a reflective state and the second liquid crystal is in a focal conic state, and the display device displays a second color;

[0111] providing a signal to the first substrate and the second substrate of the first liquid crystal element so that the first liquid crystal and the second liquid crystal in the reflective liquid crystal layer of the first liquid crystal element are in a focal conic state, providing a signal to the first substrate and the second substrate of the second liquid crystal element so that the first liquid crystal in the reflective liquid crystal layer of the second liquid crystal element is in a focal conic state and the second liquid crystal is in a reflective state, providing a signal to the first substrate and the second substrate of the third liquid crystal element so that the first liquid crystal in the reflective liquid crystal layer of the third liquid crystal element is in a focal conic state and the second liquid crystal is in a reflective state, and the display device displays a third color;

[0112] providing signals to the first substrate and the second substrate of the first liquid crystal element so that the first liquid crystal and the second liquid crystal in the reflective liquid crystal layer of the first liquid crystal element are in a reflective state, providing signals to the first substrate and the second substrate of the second liquid crystal element so that the first liquid crystal in the reflective liquid crystal layer of the second liquid crystal element is in a reflective state and the second liquid crystal is in a focal conic state, providing signals to the first substrate and the second substrate of the third liquid crystal element so that the first liquid crystal in the reflective liquid crystal layer of the third liquid crystal element is in a reflective state and the second liquid crystal is in a focal conic state, and the display device displays a superimposed color of the first color and the second color;

[0113] providing a signal to the first substrate and the second substrate of the first liquid crystal element so that the first liquid crystal in the reflective liquid crystal layer of the first liquid crystal element is in a reflective state and the second liquid crystal is in a focal conic state; providing a signal to the first substrate and the second substrate of the second liquid crystal element so that the first liquid crystal in the reflective liquid crystal layer of the second liquid crystal element is in a focal conic state and the second liquid crystal is in a reflective state; providing a signal to the first substrate and the second substrate of the third liquid crystal element so that the first liquid crystal in the reflective liquid crystal layer of the third liquid crystal element is in a focal conic state and the second liquid crystal is in a reflective state, and the display device displays a superimposed color of the first color and the third color;

[0114] providing a signal to the first substrate and the second substrate of the first liquid crystal element so that the first liquid crystal in the reflective liquid crystal layer of the first liquid crystal element is in a focal conic state and the second liquid crystal is in a reflective state, providing a signal to the first substrate and the second substrate of the second liquid crystal element so that the first liquid crystal and the second liquid crystal in the reflective liquid crystal layer of the second liquid crystal element are in a reflective state, providing a signal to the first substrate and the second substrate of the third liquid crystal element so that the first liquid crystal in the reflective liquid crystal layer of the third liquid crystal element is in a focal conic state and the second liquid crystal is in a reflective state, and the display device displays a superimposed color of the second color and the third color;

[0115] A signal is provided to the first substrate and the second substrate of the first liquid crystal element so that the first liquid crystal and the second liquid crystal in the reflective liquid crystal layer of the first liquid crystal element are in a reflective state. A signal is provided to the first substrate and the second substrate of the second liquid crystal element so that the first liquid crystal and the second liquid crystal in the reflective liquid crystal layer of the second liquid crystal element are in a reflective state. A signal is provided to the first substrate and the second substrate of the third liquid crystal element so that the first liquid crystal and the second liquid crystal in the reflective liquid crystal layer of the third liquid crystal element are in a reflective state, and the display device displays a superimposed color of the first color, the second color and the third color.

[0116] Still other aspects will become apparent upon reading and understanding the accompanying drawings and detailed description.

[0117] Summary of the Figures

[0118] The accompanying drawings are used to provide an understanding of the technical solution of the present disclosure and constitute a part of the specification. Together with the embodiments of the present disclosure, they are used to explain the technical solution of the present disclosure and do not constitute a limitation to the technical solution of the present disclosure.

[0119] FIG1 is a schematic structural diagram of a display device provided by an embodiment of the present disclosure;

[0120] FIG2 is a cross-sectional view of a liquid crystal element;

[0121] FIG3 is a partial schematic diagram of a liquid crystal display panel;

[0122] FIG4 is a second partial schematic diagram of a liquid crystal display panel;

[0123] FIG5 is a first structural diagram of a display device provided in an exemplary embodiment;

[0124] FIG6 is a schematic diagram of reflection spectra of the liquid crystal of the first liquid crystal element and the liquid crystal of the second liquid crystal element in the display device provided in FIG5 ;

[0125] FIG7 is a second structural schematic diagram of a display device provided in an exemplary embodiment;

[0126] FIG8 is a schematic diagram of reflection spectra of the liquid crystal of the first liquid crystal element and the liquid crystal of the second liquid crystal element in the display device provided in FIG7 ;

[0127] FIG9 is a third structural diagram of a display device provided in an exemplary embodiment;

[0128] FIG10 is a schematic diagram of reflection spectra of the liquid crystals of the first liquid crystal element to the liquid crystals of the third liquid crystal element in the display device provided in FIG9 ;

[0129] FIG11 is a fourth structural diagram of a display device provided in an exemplary embodiment;

[0130] FIG12 is a fifth structural diagram of a display device provided in an exemplary embodiment;

[0131] FIG13 is a sixth structural diagram of a display device provided in an exemplary embodiment;

[0132] FIG14 is a partial schematic diagram of the first liquid crystal element in FIG13;

[0133] FIG15 is a partial schematic diagram of the second liquid crystal element in FIG13;

[0134] FIG16 is a partial schematic diagram of the third liquid crystal element in FIG13;

[0135] FIG17 is a top view of a liquid crystal element;

[0136] FIG18 is a schematic structural diagram of an isolation structure;

[0137] FIG19 is another schematic structural diagram of a display device;

[0138] FIG20 is another top view of the liquid crystal element;

[0139] FIG21 is a cross-sectional view of FIG20 along the AA direction

[0140] FIG22 is a cross-sectional view of FIG20 along line BB;

[0141] FIG23 is a side view of a display device provided by an embodiment of the present disclosure;

[0142] FIG24 is an enlarged view of the dotted box in FIG23 .

[0143] Details

[0144] The present disclosure describes multiple embodiments, but this description is exemplary rather than restrictive, and it will be apparent to those skilled in the art that more embodiments and implementations may be included within the scope of the embodiments described in the present disclosure. Although many possible feature combinations are shown in the drawings and discussed in the detailed description, many other combinations of the disclosed features are also possible. Unless specifically limited, any feature or element of any embodiment may be used in combination with any other feature or element in any other embodiment, or may replace any other feature or element in any other embodiment.

[0145] The present disclosure includes and contemplates combinations of features and elements known to those of ordinary skill in the art. The embodiments, features, and elements disclosed in the present disclosure may also be combined with any conventional features or elements to form a technical solution defined by the claims. Any features or elements of any embodiment may also be combined with features or elements from other technical solutions to form another technical solution defined by the claims. Therefore, it should be understood that any feature shown and / or discussed in this disclosure may be implemented individually or in any appropriate combination. Therefore, the embodiments are not subject to other limitations except for the limitations set forth in the appended claims and their equivalents. In addition, various modifications and changes may be made within the scope of protection of the appended claims.

[0146] Unless otherwise defined, the technical or scientific terms used in this disclosure should have the usual meanings understood by people with ordinary skills in the field to which this disclosure belongs. The words "first", "second" and similar words used in this disclosure do not indicate any order, quantity or importance, but are only used to distinguish different components. Words such as "include" or "comprise" mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. Words such as "connect" or "connected" are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the object being described changes, the relative positional relationship may also change accordingly.

[0147] A liquid crystal display panel using cholesteric liquid crystal has a low light utilization rate, which reduces the reflectivity of the liquid crystal display panel and further leads to poor display effect of the liquid crystal display panel.

[0148] Cholesteric liquid crystals are a special form of nematic liquid crystals. The molecules in cholesteric liquid crystals are arranged in multiple layers. Within each planar layer, the long axes of the molecules are parallel. However, the long axis orientation of the molecules gradually deviates between different planar layers, and the directors of each planar layer twist layer by layer. The molecules in the cholesteric liquid crystal are arranged in a periodic spiral along the normal direction of the planar layer. The distance along the normal direction corresponding to a 360° change in the long axis orientation of the molecules is called the pitch.

[0149] Due to its unique helical structure, cholesteric liquid crystals exhibit Bragg reflection properties, meaning that when the wavelength of the incident light satisfies λ = nP, the incident light will be reflected, where λ is the wavelength of the reflected light, P is the helical pitch of the cholesteric liquid crystal, and n is the average refractive index of the liquid crystal. Since n is relatively fixed, the wavelength λ of the light reflected by the cholesteric liquid crystal can be controlled by adjusting P. Cholesteric liquid crystals also exhibit significant circular dichroism. When a beam of light passes through the cholesteric liquid crystal, only circularly polarized light that follows the Bragg reflection formula and has the same helical direction as the cholesteric liquid crystal is reflected, while the rest of the light is transmitted. In other words, when a beam of light is incident, the cholesteric liquid crystal will reflect the same circularly polarized light as the incident light with the same helical direction.

[0150] Cholesteric liquid crystal has three states: planar texture state, focal conic texture state, and dehelical state. When the cholesteric liquid crystal is in the planar texture state, the liquid crystal display panel containing the cholesteric liquid crystal is in a reflective state. When the cholesteric liquid crystal is in the focal conic texture state or dehelical state, the liquid crystal display panel containing the cholesteric liquid crystal is in the focal conic state. The transmittance of the liquid crystal display panel containing the cholesteric liquid crystal when the cholesteric liquid crystal is in the focal conic texture state is lower than the transmittance of the liquid crystal display panel containing the cholesteric liquid crystal when the cholesteric liquid crystal is in the dehelical state.

[0151] Figure 1 is a schematic diagram of the structure of a display device provided by an embodiment of the present disclosure, and Figure 2 is a cross-sectional view of a liquid crystal element. As shown in Figures 1 and 2, the display device provided by an embodiment of the present disclosure may include: a light absorbing layer 10 and a liquid crystal element layer 20 disposed on the light absorbing layer 10. The liquid crystal element layer 20 includes: at least two stacked liquid crystal elements, each of which includes: a first substrate 201, a reflective liquid crystal layer 203, and a second substrate 202. The first substrate 201 is located on the side of the reflective liquid crystal layer 203 that is closer to the light absorbing layer 10, and the second substrate 202 is located on the side of the reflective liquid crystal layer 203 that is farther away from the light absorbing layer 10.

[0152] In an exemplary embodiment, the operating states of the reflective liquid crystal layer 203 include a reflective state and a focal conic state. FIG1 illustrates K liquid crystal elements 20-1 to 20-K as an example.

[0153] In an exemplary embodiment, the reflective liquid crystal layer, when in a reflective state, reflects at least one of left-handed polarized light and right-handed polarized light. The reflective liquid crystal layer of one of the adjacent liquid crystal elements, when in a reflective state, reflects at least left-handed polarized light, while the reflective liquid crystal layer of the other of the adjacent liquid crystal elements, when in a reflective state, reflects at least right-handed polarized light. Exemplarily, when the reflective liquid crystal layer reflects only one type of deflected light, the reflective layer of one of the adjacent liquid crystal elements reflects left-handed polarized light, while the reflective layer of the other of the adjacent liquid crystal elements reflects right-handed polarized light. When the liquid crystal elements reflect both left-handed and right-handed polarized light, the light reflected by the liquid crystal element in one of the adjacent liquid crystal elements includes left-handed polarized light, while the light reflected by the liquid crystal element in the other of the adjacent liquid crystal elements includes right-handed polarized light. In other words, the display device of the present disclosure can simultaneously reflect both left-handed and right-handed polarized light.

[0154] In an exemplary embodiment, the liquid crystal element may reflect incident light having a wavelength satisfying λ=nP in the reflective state, and may transmit light in the focal conic state.

[0155] In an exemplary embodiment, the light absorbing layer 10 may be a black substrate.

[0156] The display device provided by the embodiment of the present disclosure includes: a light absorbing layer and a liquid crystal element layer disposed on the light absorbing layer, the liquid crystal element layer including: at least two stacked liquid crystal elements, the liquid crystal elements including: a first substrate, a reflective liquid crystal layer, and a second substrate, wherein the first substrate is located on a side of the reflective liquid crystal layer close to the light absorbing layer, and the second substrate is located on a side of the reflective liquid crystal layer away from the light absorbing layer; the working states of the reflective liquid crystal layer include: a reflective state and a focal conic state, and when the reflective liquid crystal layer is in the reflective state, the liquid crystal element reflects at least one of left-handed polarized light and right-handed polarized light, and when the reflective liquid crystal layer of one of the adjacent liquid crystal elements is in the reflective state, the light reflected by the liquid crystal element includes at least left-handed polarized light, and when the reflective liquid crystal layer of the other of the adjacent liquid crystal elements is in the reflective state, the light reflected by the liquid crystal element includes at least right-handed polarized light. The present disclosure improves the light utilization efficiency of the display device by simultaneously reflecting left-handed polarized light and right-handed polarized light, thereby improving the reflectivity and display effect of the display device.

[0157] 2 , the liquid crystal element further includes a driver 204 disposed on the first substrate 201. The driver 204 is configured to provide signals to the first and second substrates 201 and 202 to switch the reflective liquid crystal layer 203 between the focal conic state and the reflective state.

[0158] In an exemplary embodiment, as shown in FIG2 , the first substrate 201 may include: a first base 2011 and a first electrode layer 2012; the second substrate 202 may include: a second base 2021 and a second electrode layer 2022; the first electrode layer 2012 is located on a side of the first base 2011 close to the reflective liquid crystal layer 203; the second electrode layer 2022 is located on a side of the second base 2021 close to the reflective liquid crystal layer 203; the first base 2011 includes: data signal lines and scan signal lines (not shown in the figure); and the second base 2021 includes: a black matrix layer (not shown in the figure).

[0159] In an exemplary embodiment, as shown in FIG. 2 , the driver 204 is disposed on the first substrate 2011 and is electrically connected to the first electrode layer 2012 and the second electrode layer 2022 .

[0160] In an exemplary embodiment, the first electrode layer may include an array of first electrodes, and the second electrode layer may include a second electrode. In an exemplary embodiment, data signal lines and scan signal lines intersect to define a plurality of sub-pixels, the reflective liquid crystal layer includes liquid crystal, and the sub-pixels include the first electrode, the liquid crystal, and the second electrode.

[0161] In exemplary embodiments, the liquid crystal may be a cholesteric liquid crystal.

[0162] In an exemplary embodiment, the orthographic projection of the driver 204 on the first substrate 2011 and the orthographic projection of the light absorbing layer 10 on the first substrate 2011 do not have an overlapping area.

[0163] In an exemplary embodiment, an orthographic projection of the first electrode on the first substrate at least partially overlaps with an orthographic projection of the second electrode on the first substrate. The at least partial overlap of the orthographic projection of the first electrode on the first substrate with the orthographic projection of the second electrode on the first substrate can form an electric field between the first electrode and the second electrode, thereby driving the liquid crystal element.

[0164] In an exemplary embodiment, there is no overlapping area between the orthographic projections of the first electrode and the second electrode on the first substrate and the orthographic projection of the driver on the first substrate.

[0165] In an exemplary embodiment, as shown in FIG2 , the orthographic projection of the second substrate 202 on the first substrate 2011 does not overlap with the orthographic projection of the driver 204 on the first substrate 2011. In the present disclosure, an alignment mark is provided at the location where the driver is located. Therefore, the orthographic projection of the second substrate 202 on the first substrate 2011 does not overlap with the orthographic projection of the driver 204 on the first substrate 2011, thereby preventing the alignment mark from being covered and improving the alignment deviation of adjacent liquid crystal elements.

[0166] In an exemplary embodiment, an orthographic projection of the black matrix layer on the first substrate at least partially overlaps with orthographic projections of the data signal line and the scan signal line on the first substrate.

[0167] In an exemplary embodiment, as shown in FIG. 2 , the liquid crystal element further includes a sealant 205 . The sealant 205 is located between the first substrate 201 and the second substrate 202 . The reflective liquid crystal layer 203 is filled in the sealant 205 .

[0168] In an exemplary embodiment, the alignment deviation of adjacent liquid crystal elements is less than or equal to 5 micrometers. A alignment deviation of adjacent liquid crystal elements of less than or equal to 5 micrometers can prevent light leakage, moiré patterns, and rainbow patterns in the display device, thereby improving the display effect of the display device.

[0169] In an exemplary embodiment, the first substrate 201 and the second substrate 202 are transparent substrates. The transparent substrates may be hard glass substrates or flexible plastic substrates. For example, the flexible plastic substrates may be made of one or more materials selected from the group consisting of silicon, silicon oxide, silicon carbide, polyethylene terephthalate, and polyethylene naphthalate.

[0170] In an exemplary embodiment, the first electrode and the second electrode are transparent electrodes. Exemplarily, the material of the transparent electrodes may include: indium tin oxide, indium zinc oxide, or nano silver film.

[0171] In an exemplary embodiment, by providing a transparent substrate and a transparent electrode on the transparent substrate, it is advantageous to avoid loss of a portion of the wavelength band of incident light when the liquid crystal element is in the focal conic state.

[0172] In exemplary embodiments, because the liquid crystal layer in the liquid crystal element of the present disclosure is a reflective liquid crystal layer, display can be achieved without a color resist layer on the second substrate. Consequently, the pixel aperture ratio of the subpixels of the present disclosure is significantly greater than that of subpixels in display devices including a color resist layer, and can be greater than 85%.

[0173] In an exemplary embodiment, a driver includes a timing controller, a data driver, a scan driver, and a flexible circuit board. The timing controller is connected to the data driver and the scan driver, respectively. The data driver is connected to a plurality of data signal lines, respectively. The scan driver is connected to a plurality of scan signal lines, respectively. At least one subpixel may include a first electrode and a second electrode, and a liquid crystal disposed between the first and second electrodes. The first electrode or the second electrode is connected to the scan signal line and the data signal line, respectively.

[0174] In an exemplary embodiment, the timing controller may provide grayscale values ​​and control signals suitable for the specifications of the data driver to the data driver; may provide clock signals, scan start signals, etc. suitable for the specifications of the scan driver to the scan driver; and may provide clock signals, emission stop signals, etc. suitable for the specifications of the light-emitting driver to the light-emitting driver. The data driver may use the grayscale values ​​and control signals received from the timing controller to generate data voltages to be provided to the data signal lines. For example, the data driver may use the clock signal to sample the grayscale values ​​and apply data voltages corresponding to the grayscale values ​​to the data signal lines on a pixel row basis. The scan driver may generate scan signals to be provided to the scan signal lines by receiving clock signals, scan start signals, etc. from the timing controller. For example, the scan driver may sequentially provide scan signals having on-level pulses to the scan signal lines. For example, the scan driver may be configured as a shift register and may generate scan signals by sequentially transmitting scan start signals provided in the form of on-level pulses to the next-stage circuit under the control of the clock signal.

[0175] In an exemplary embodiment, the driver may provide a direct current signal to the second electrode.

[0176] In an exemplary embodiment, the driver can put the reflective liquid crystal layer of the liquid crystal element into a reflective state by applying a first AC signal to the first electrode, so that the liquid crystal element is in a transition state, and then by momentarily disconnecting the power to 0 volts, so that the reflective liquid crystal layer of the liquid crystal element is in a reflective state.

[0177] In an exemplary embodiment, the driver may place the reflective liquid crystal layer of the liquid crystal element in the reflective state by applying a second AC signal to the first electrode, and then place the liquid crystal element in the focal conic state by momentarily disconnecting the first electrode.

[0178] In an exemplary embodiment, a voltage value of the first AC signal is greater than a voltage value of the second AC signal.

[0179] In an exemplary embodiment, the driver may apply the AC signal for 1 second at a frequency of 20 Hz.

[0180] In an exemplary embodiment, the wavelength L of the light reflected by the liquid crystal in the reflective liquid crystal layer and the distance P between the first electrode and the second electrode of the sub-pixel where the liquid crystal is located satisfy the formula: L = n*t*P, where n is the average refractive index of the liquid crystal, and t is the ratio of the helical pitch of the liquid crystal to the distance between the first electrode and the second electrode of any sub-pixel in the liquid crystal element, that is, the ratio of the wavelength L of the light reflected by the liquid crystal in the reflective liquid crystal layer to the distance between the first electrode and the second electrode of any sub-pixel in the liquid crystal element is in direct proportion.

[0181] In an exemplary embodiment, FIG3 is a partial schematic diagram of a liquid crystal display panel (1), and FIG4 is a partial schematic diagram of a liquid crystal display panel (2). As shown in FIG3 and FIG4 , a first substrate 2011 includes a first device layer 2013 and a passivation layer 2014. The first device layer 2013 also includes a first substrate and a thin-film transistor. FIG3 illustrates an example in which a liquid crystal element reflects light of one color, while FIG4 illustrates an example in which a liquid crystal element reflects light of two colors.

[0182] In an exemplary embodiment, as shown in FIG3 , the liquid crystal element reflects light of one color, and the liquid crystal is either a left-handed cholesteric liquid crystal or a right-handed cholesteric liquid crystal. When the liquid crystal element reflects left-handed polarized light, the liquid crystal is a left-handed cholesteric liquid crystal, and when the liquid crystal element reflects right-handed polarized light, the liquid crystal is a right-handed cholesteric liquid crystal.

[0183] In an exemplary embodiment, as shown in FIG3 , all sub-pixels have the same liquid crystal, the surface of the first substrate 2011 near the reflective liquid crystal layer 203 is flat, and the distance L between the first electrode and the second electrode of any two sub-pixels in all sub-pixels is equal. The flatness of the surface of film layer A near film layer B means that the difference between the maximum distance between the surface of film layer A near film layer B and the substrate and the minimum distance between the surface of film layer A near film layer B and the substrate is less than a first threshold difference. The first threshold difference may be 0.01 to 0.02 times the minimum distance between the surface of film layer A near film layer B and the substrate. The equal distance L between the first electrode and the second electrode of any two sub-pixels in all sub-pixels means that the difference between the maximum distance between the first electrode and the second electrode and the minimum distance between the first electrode and the second electrode in all sub-pixels is less than a second threshold difference. Exemplarily, the second threshold difference may be 0.01 to 0.02 times the minimum distance between the first electrode and the second electrode in a sub-pixel.

[0184] In an exemplary embodiment, as shown in FIG4 , the liquid crystal element reflects two colors of light, and the liquid crystal includes: a first liquid crystal 2031 and a second liquid crystal 2032 , the first liquid crystal 2031 and the second liquid crystal 2032 being either a left-handed cholesteric liquid crystal or a right-handed cholesteric liquid crystal, and the first liquid crystal 2031 and the second liquid crystal 2032 are configured to reflect light of different wavelengths.

[0185] In an exemplary embodiment, as shown in FIG4 , the subpixels in the liquid crystal element are arranged in an array along a first direction and a second direction, the first direction and the second direction intersecting each other; the liquid crystal in one of the two subpixels arranged along the first direction is the first liquid crystal, and the liquid crystal in the other of the two subpixels arranged along the first direction is the second liquid crystal; the liquid crystal in one of the two subpixels arranged along the second direction is the first liquid crystal, and the liquid crystal in the other of the two subpixels arranged along the second direction is the second liquid crystal. The surface of the first substrate 2011 near the reflective liquid crystal layer 203 is uneven, and the distance L1 between the first electrode and the second electrode of the subpixel where the first liquid crystal 2031 is located is not equal to the distance L2 between the first electrode and the second electrode of the subpixel where the second liquid crystal 2032 is located.

[0186] In an exemplary embodiment, in the display device provided in FIG4 , when the liquid crystal element reflects left-handed polarized light, the first liquid crystal and the second liquid crystal are left-handed cholesteric liquid crystals; when the liquid crystal element reflects right-handed polarized light, the first liquid crystal and the second liquid crystal are right-handed cholesteric liquid crystals; and when the liquid crystal element reflects left-handed polarized light and right-handed polarized light, one of the first liquid crystal and the second liquid crystal is a left-handed cholesteric liquid crystal, and the other of the first liquid crystal and the second liquid crystal is a right-handed cholesteric liquid crystal.

[0187] In an exemplary embodiment, as shown in FIG. 4 , the display device further includes an isolation structure 206 for separating the first liquid crystal and the second liquid crystal.

[0188] In an exemplary embodiment, FIG5 is a first schematic diagram of the structure of a display device provided in an exemplary embodiment. As shown in FIG5 , the at least two liquid crystal elements may include a first liquid crystal element 21 and a second liquid crystal element 22. The first liquid crystal element 21 includes a first substrate 211, a second substrate 212, a reflective liquid crystal layer 213, a driver 214, and a sealant 215. The second liquid crystal element 22 includes a first substrate 221, a second substrate 222, a reflective liquid crystal layer 223, a driver 224, and a sealant 225. When the reflective liquid crystal layer 213 of the first liquid crystal element 21 is in a reflective state, the first liquid crystal element 21 reflects light of a first color. When the reflective liquid crystal layer 223 of the second liquid crystal element 22 is in a reflective state, the second liquid crystal element 22 reflects light of a second color.

[0189] In an exemplary embodiment, the first color and the second color are different, and the superposition of the first and second colors is white. When the wavelength of the first color is greater than the wavelength of the second color, the distance between the first electrode and the second electrode of any subpixel in the first liquid crystal element is greater than the distance between the first electrode and the second electrode of any subpixel in the second liquid crystal element. Figure 5 illustrates an example in which the first color is red and the second color is cyan. The display device provided in Figure 5 can achieve a four-color display of black, white, red, and cyan by using two liquid crystal elements that reflect light of different colors in a reflective state in conjunction with a light-absorbing layer.

[0190] In an exemplary embodiment, the first liquid crystal element 21 may be located on a side of the second liquid crystal element 22 that is close to the light absorbing layer 10, or may be located on a side of the second liquid crystal element 22 that is away from the light absorbing layer 10. FIG5 illustrates an example in which the first liquid crystal element 21 may be located on a side of the second liquid crystal element 22 that is close to the light absorbing layer 10.

[0191] In an exemplary embodiment, in the display device provided in FIG. 5 , the first color light is either left-handed polarized light or right-handed polarized light, and the second color light is the other of the left-handed polarized light or right-handed polarized light.

[0192] FIG6 is a schematic diagram of the reflection spectra of the liquid crystal of the first liquid crystal element and the liquid crystal of the second liquid crystal element in the display device provided in FIG5. As shown in FIG6, the central reflection wavelength of the liquid crystal of the first liquid crystal element 21 is greater than the reflection wavelength of the liquid crystal of the second liquid crystal element 22. According to the reflection wavelength formula of the liquid crystal element λ = Δn * P, it can be seen that λ is proportional to P. In other words, the helical pitch of the liquid crystal of the first liquid crystal element 21 is greater than the helical pitch of the liquid crystal of the second liquid crystal element 22. Since the helical pitch of the liquid crystal is proportional to the distance between the first electrode and the second electrode of any subpixel in the liquid crystal element, in order to match the reflection wavelength and achieve a better optical effect, the distance between the first electrode and the second electrode of any subpixel in the first liquid crystal element is greater than the distance between the first electrode and the second electrode of any subpixel in the second liquid crystal element.

[0193] In an exemplary embodiment, the distance between the first electrode and the second electrode of any subpixel in the first liquid crystal element ranges from 5.8 micrometers to 6.2 micrometers. For example, the distance between the first electrode and the second electrode of any subpixel in the first liquid crystal element may be 6 micrometers.

[0194] In an exemplary embodiment, the distance between the first electrode and the second electrode of any sub-pixel in the second liquid crystal element is in a range of 3.8 micrometers to 4.2 micrometers. For example, the distance between the first electrode and the second electrode of any sub-pixel in the second liquid crystal element may be 4 micrometers.

[0195] In an exemplary embodiment, when the first color is red, the liquid crystal in the first liquid crystal element 21 is red cholesteric liquid crystal, and when the second color is cyan, the liquid crystal in the second liquid crystal element 22 is cyan cholesteric liquid crystal.

[0196] In an exemplary embodiment, the alignment deviation between the first liquid crystal element 21 and the second liquid crystal element 22 is less than or equal to 5 microns. For example, high-precision lamination equipment can be used to laminate the first liquid crystal element 21 and the second liquid crystal element 22. Laminating the first liquid crystal element 21 and the second liquid crystal element 22 with a deviation of less than or equal to 5 microns can prevent light leakage, moiré patterns, and rainbow patterns in the display device, thereby improving the display quality of the display device.

[0197] The following describes in detail how the display device shown in FIG. 5 achieves a four-color display of black, white, red, and cyan. For example, when the display device displays black, the driver 214 of the first liquid crystal element 21 switches the reflective liquid crystal layer 213 in the first liquid crystal element 21 to a focal conic state, and the driver 224 of the second liquid crystal element 22 switches the reflective liquid crystal layer 223 in the second liquid crystal element 22 to a focal conic state. The first liquid crystal element 21 does not reflect the corresponding color, and external light passes through the second liquid crystal element 22 and the first liquid crystal element 21, reaches the light-absorbing layer, and is absorbed by the light-absorbing layer. At this point, the display device displays black. When the display device displays white, the driver 214 of the first liquid crystal element 21 switches the reflective liquid crystal layer 213 in the first liquid crystal element 21 to a reflective state, and the driver 224 of the second liquid crystal element 22 switches the reflective liquid crystal layer 223 in the second liquid crystal element 22 to a reflective state. The first liquid crystal element 21 reflects red light, and the second liquid crystal element 22 reflects cyan light. The combination of cyan and red light produces white. When the display device displays red, the reflective liquid crystal layer 213 in the first liquid crystal element 21 can be switched to a reflective state by the driver 214 of the first liquid crystal element 21, and the reflective liquid crystal layer 223 in the second liquid crystal element 22 can be switched to a focal conic state by the driver 224 of the second liquid crystal element 22. External light passes through the second liquid crystal element 22 to reach the first liquid crystal element 21, and the first liquid crystal element 21 reflects red light, and the display device displays red. When the display device displays cyan, the reflective liquid crystal layer 213 in the first liquid crystal element 21 can be switched to a focal conic state by the driver 214 of the first liquid crystal element 21, and the reflective liquid crystal layer 223 in the second liquid crystal element 22 can be switched to a reflective state by the driver 224 of the second liquid crystal element 22. At this time, the second liquid crystal element 22 reflects cyan light, and the display device displays cyan. The display device provided in FIG. 5 of the present disclosure can realize the display of four colors: black, white, red, and cyan in the above manner, thereby realizing multi-color display of the display device and improving the display effect of the display device.

[0198] In an exemplary embodiment, FIG7 is a second schematic structural diagram of a display device provided in an exemplary embodiment. As shown in FIG7 , the at least two liquid crystal elements may include a first liquid crystal element 23 and a second liquid crystal element 24. The first liquid crystal element 23 includes a first substrate 231, a second substrate 232, a reflective liquid crystal layer 233, a driver 234, and a sealant 235. The second liquid crystal element 24 includes a first substrate 243, a second substrate 242, a reflective liquid crystal layer 243, a driver 244, and a sealant 245. When the reflective liquid crystal layer 233 of the first liquid crystal element 23 is in a reflective state, the first liquid crystal element 23 reflects light of a first color. When the reflective liquid crystal layer 243 of the second liquid crystal element 24 is in a reflective state, the second liquid crystal element 24 reflects light of a second color.

[0199] In an exemplary embodiment, the first and second colors are different, and the superposition of the first and second colors is white. When the wavelength of the first color is greater than the wavelength of the second color, the distance between the first electrode and the second electrode of any subpixel in the first liquid crystal element is greater than the distance between the first electrode and the second electrode of any subpixel in the second liquid crystal element. Figure 7 illustrates the case where the first and second colors are yellow and blue. The display device provided in Figure 7 can achieve a four-color display of black, white, blue, and yellow by using two liquid crystal elements that reflect light of different colors in a reflective state in conjunction with a light-absorbing layer.

[0200] In an exemplary embodiment, the first liquid crystal element 23 may be located on a side of the second liquid crystal element 24 that is close to the light absorbing layer 10, or may be located on a side of the second liquid crystal element 24 that is away from the light absorbing layer 10. FIG7 illustrates an example in which the first liquid crystal element 23 may be located on a side of the second liquid crystal element 24 that is close to the light absorbing layer 10.

[0201] In an exemplary embodiment, in the display device provided in FIG. 7 , the first color light is either left-handed polarized light or right-handed polarized light, and the second color light is the other of the left-handed polarized light or right-handed polarized light.

[0202] FIG8 is a schematic diagram of the reflection spectra of the liquid crystals of the first and second liquid crystal elements in the display device shown in FIG7. As shown in FIG7, the central reflection wavelength of the liquid crystals of the first liquid crystal element 23 is smaller than the reflection wavelength of the liquid crystals of the second liquid crystal element 24. According to the reflection wavelength formula of the liquid crystal element λ = Δn * P, it can be seen that λ is proportional to P. In other words, the helical pitch of the liquid crystals of the first liquid crystal element 23 is smaller than the helical pitch of the liquid crystals of the second liquid crystal element 24. Since the helical pitch of the liquid crystals is proportional to the distance between the first electrode and the second electrode of any sub-pixel in the liquid crystal element, in order to match the reflection wavelength and achieve a better optical effect, the distance between the first electrode and the second electrode of any sub-pixel in the first liquid crystal element is greater than the distance between the first electrode and the second electrode of any sub-pixel in the second liquid crystal element.

[0203] In an exemplary embodiment, the distance between the first electrode and the second electrode of any subpixel in the first liquid crystal element ranges from 4.8 micrometers to 5.2 micrometers. For example, the distance between the first electrode and the second electrode of any subpixel in the first liquid crystal element may be 5 micrometers.

[0204] In an exemplary embodiment, the distance between the first electrode and the second electrode of any subpixel in the second liquid crystal element ranges from 3.8 micrometers to 4.2 micrometers. For example, the distance between the first electrode and the second electrode of any subpixel in the second liquid crystal element may be 4 micrometers.

[0205] In an exemplary embodiment, the alignment deviation between the first liquid crystal element 23 and the second liquid crystal element 24 is less than or equal to 5 microns. For example, high-precision lamination equipment can be used to laminate the first liquid crystal element 23 and the second liquid crystal element 24. Laminating the first liquid crystal element 23 and the second liquid crystal element 24 with a deviation of less than or equal to 5 microns can prevent light leakage, moiré patterns, and rainbow patterns in the display device, thereby improving the display quality of the display device.

[0206] The following describes in detail how the display device shown in FIG. 7 achieves a four-color display of black, white, blue, and yellow. For example, when the display device displays black, the driver 234 of the first liquid crystal element 23 switches the reflective liquid crystal layer 233 of the first liquid crystal element 23 to a focal conic state, and the driver 244 of the second liquid crystal element 24 switches the reflective liquid crystal layer 233 of the second liquid crystal element 24 to a focal conic state. The first and second liquid crystal elements 23 and 24 do not reflect the corresponding colors, and external light passes through the first and second liquid crystal elements 23 and 24 to the light absorbing layer 10, where it is absorbed. At this point, the display device displays black. When the display device displays white, the driver 234 of the first liquid crystal element 23 switches the reflective liquid crystal layer 233 of the first liquid crystal element 23 to a reflective state, and the driver 244 of the second liquid crystal element 24 switches the reflective liquid crystal layer 243 of the second liquid crystal element 24 to a reflective state. The first liquid crystal element 23 reflects blue light, while the second liquid crystal element 24 reflects yellow light. The combination of yellow and blue light produces white. When the display device displays blue, the reflective liquid crystal layer 233 of the first liquid crystal element 23 can be switched to a reflective state by the driver 234 of the first liquid crystal element 23, and the reflective liquid crystal layer 243 of the second liquid crystal element 24 can be switched to a focal conic state by the driver 244 of the second liquid crystal element 24. External light passes through the second liquid crystal element 24 to reach the first liquid crystal element 23, and the first liquid crystal element 23 reflects blue light, and the display device displays blue. When the display device displays yellow, the reflective liquid crystal layer 233 of the first liquid crystal element 23 can be switched to a focal conic state by the driver 234 of the first liquid crystal element 23, and the reflective liquid crystal layer 243 of the second liquid crystal element 24 can be switched to a reflective state by the driver 244 of the second liquid crystal element 24. At this time, the second liquid crystal element 24 reflects yellow light, and the display device displays yellow. The display device provided in FIG. 7 of the present disclosure can realize the display of four colors of black, white, blue and yellow in the above manner, thereby realizing multi-color display of the display device and improving the display effect of the display device.

[0207] In an exemplary embodiment, FIG9 is a third schematic structural diagram of a display device provided in an exemplary embodiment. As shown in FIG9 , the at least two liquid crystal elements may include a first liquid crystal element 25, a second liquid crystal element 26, and a third liquid crystal element 27. The first liquid crystal element 25 includes a first substrate 251, a second substrate 252, a reflective liquid crystal layer 253, a driver 254, and a sealant 255. The second liquid crystal element 26 includes a first substrate 263, a second substrate 262, a reflective liquid crystal layer 263, a driver 264, and a sealant 265. The third liquid crystal element 27 includes a first substrate 273, a second substrate 272, a reflective liquid crystal layer 273, a driver 274, and a sealant 275. When the reflective liquid crystal layer 253 of the first liquid crystal element 25 is in a reflective state, the first liquid crystal element 25 reflects light of a first color. When the reflective liquid crystal layer 263 of the second liquid crystal element 26 is in a reflective state, the second liquid crystal element 26 reflects light of a second color. When the reflective liquid crystal layer 273 of the third liquid crystal element 27 is in a reflective state, the third liquid crystal element 27 reflects light of a third color. Any two of the first, second, and third colors are different, and the superposition of the first, second, and third colors is white. The display device shown in FIG9 can achieve color display by combining three liquid crystal elements that reflect light of different colors in a reflective state with a light absorbing layer 10.

[0208] In an exemplary embodiment, as shown in FIG9 , any two of the distance between the first electrode and the second electrode of any sub-pixel in the first liquid crystal element 25, the distance between the first electrode and the second electrode of any sub-pixel in the second liquid crystal element 26, and the distance between the first electrode and the second electrode of any sub-pixel in the third liquid crystal element 27 are different.

[0209] In an exemplary embodiment, the first color is red, the second color is green, and the third color is blue.

[0210] FIG10 is a schematic diagram of the reflection spectra of the liquid crystals of the first liquid crystal element to the third liquid crystal element in the display device provided in FIG9 . As shown in FIG10 , the central reflection wavelength of the liquid crystal of the first liquid crystal element 25 is greater than the central reflection wavelength of the liquid crystal of the second liquid crystal element 26, and the central reflection wavelength of the liquid crystal of the second liquid crystal element 26 is greater than the central reflection wavelength of the liquid crystal of the third liquid crystal element 27. According to the formula for the reflection wavelength of liquid crystal elements, λ = Δn*P, it can be seen that λ is proportional to P. In other words, the helical pitch of the liquid crystal of the first liquid crystal element 25 is greater than the helical pitch of the liquid crystal of the second liquid crystal element 26, and the helical pitch of the liquid crystal of the second liquid crystal element 26 is greater than the helical pitch of the liquid crystal of the third liquid crystal element 27. Since the helical pitch of the liquid crystal is proportional to the distance between the first electrode and the second electrode of any subpixel in the liquid crystal element, to match the reflection wavelength and achieve a better optical effect, the distance between the first electrode and the second electrode of any subpixel in the first liquid crystal element is greater than the distance between the first electrode and the second electrode of any subpixel in the second liquid crystal element, and the distance between the first electrode and the second electrode of any subpixel in the second liquid crystal element is greater than the distance between the first electrode and the second electrode of any subpixel in the third liquid crystal element.

[0211] In an exemplary embodiment, the distance between the first electrode and the second electrode of any subpixel in the first liquid crystal element ranges from 5.8 micrometers to 6.2 micrometers. For example, the distance between the first electrode and the second electrode of any subpixel in the first liquid crystal element may be 6 micrometers.

[0212] In an exemplary embodiment, the distance between the first electrode and the second electrode of any subpixel in the second liquid crystal element is 4.8 micrometers to 5.2 micrometers. For example, the distance between the first electrode and the second electrode of any subpixel in the second liquid crystal element may be 5 micrometers.

[0213] In an exemplary embodiment, the distance between the first electrode and the second electrode of any subpixel in the third liquid crystal element ranges from 3.8 micrometers to 4.2 micrometers. For example, the distance between the first electrode and the second electrode of any subpixel in the third liquid crystal element may be 4 micrometers.

[0214] In an exemplary embodiment, as shown in FIG9 , the first liquid crystal element 25 may be located on a side of the second liquid crystal element 26 closer to the light absorbing layer 10, and the third liquid crystal element 27 may be located on a side of the second liquid crystal element 26 farther from the light absorbing layer 10. In this case, the first color light and the third color light are either left-handed polarized light or right-handed polarized light, and the second color light is the other of the left-handed polarized light and the right-handed polarized light.

[0215] In an exemplary embodiment, the alignment deviation between adjacent liquid crystal elements (e.g., the first liquid crystal element 25 and the second liquid crystal element 26, and the second liquid crystal element 26 and the third liquid crystal element 27) is less than or equal to 5 microns. For example, high-precision lamination equipment can be used to laminate the first liquid crystal element 25 and the second liquid crystal element 26, and the second liquid crystal element 26 and the third liquid crystal element 27. Laminating the first liquid crystal element 25 and the second liquid crystal element 26, and the second liquid crystal element 26 and the third liquid crystal element 27 with a deviation of less than or equal to 5 microns can prevent light leakage, moiré patterns, and rainbow patterns in the display device, thereby improving the display quality of the display device.

[0216] The following describes in detail how the display device shown in FIG9 achieves eight-color display: black, white, red, green, blue, cyan, yellow, and purple. For example, when the display device displays black, the first color is red, the second color is green, and the third color is blue. The driver 254 of the first liquid crystal element 25 switches the reflective liquid crystal layer 253 of the first liquid crystal element 25 to a focal conic state. The driver 264 of the second liquid crystal element 26 switches the reflective liquid crystal layer 263 of the second liquid crystal element 26 to a focal conic state. The driver 274 of the third liquid crystal element 27 switches the reflective liquid crystal layer 273 of the third liquid crystal element 27 to a focal conic state. The first, second, and third liquid crystal elements 25, 26, and 27 no longer reflect the corresponding colors. External light passes through the third, second, and first liquid crystal elements 27, 26, and 25, reaches the light absorbing layer 10, and is absorbed by the light absorbing layer 10. At this point, the display device displays black. When the display device displays white, the reflective liquid crystal layer 253 of the first liquid crystal element 25 can be switched to a reflective state by the driver 254 of the first liquid crystal element 25, the reflective liquid crystal layer 263 of the second liquid crystal element 26 can be switched to a reflective state by the driver 264 of the second liquid crystal element 26, and the reflective liquid crystal layer 273 of the third liquid crystal element 27 can be switched to a reflective state by the driver 274 of the third liquid crystal element 27. The first liquid crystal element 25 reflects red light, the second liquid crystal element 26 reflects green light, and the third liquid crystal element 27 emits blue light. The red light, green light and blue light are combined to display white. When the display device displays red, the reflective liquid crystal layer 253 of the first liquid crystal element 25 can be switched to a reflective state by the driver 254 of the first liquid crystal element 25, the reflective liquid crystal layer 263 of the second liquid crystal element 26 can be switched to a focal conic state by the driver 264 of the second liquid crystal element 26, and the reflective liquid crystal layer 273 of the third liquid crystal element 27 can be switched to a focal conic state by the driver 274 of the third liquid crystal element 27. External light passes through the third liquid crystal element 27 and the second liquid crystal element 26 to reach the first liquid crystal element 25, and the first liquid crystal element 25 reflects red light. At this time, the display device displays red. When the display device displays green, the reflective liquid crystal layer 253 of the first liquid crystal element 25 can be switched to a focal conic state by the driver 254 of the first liquid crystal element 25, the reflective liquid crystal layer 263 of the second liquid crystal element 26 can be switched to a reflective state by the driver 264 of the second liquid crystal element 26, and the reflective liquid crystal layer 273 of the third liquid crystal element 27 can be switched to a focal conic state by the driver 274 of the third liquid crystal element 27. External light passes through the third liquid crystal element 27 to reach the second liquid crystal element 26, and the second liquid crystal element 26 reflects green light. At this time, the display device displays green.When the display device displays blue, the reflective liquid crystal layer 253 of the first liquid crystal element 25 can be switched to a focal conic state by the driver 254 of the first liquid crystal element 25, the reflective liquid crystal layer 263 of the second liquid crystal element 26 can be switched to a focal conic state by the driver 264 of the second liquid crystal element 26, and the reflective liquid crystal layer 273 of the third liquid crystal element 27 can be switched to a reflective state by the driver 274 of the third liquid crystal element 27. The third liquid crystal element 27 reflects blue light, and the display device displays blue. When the display device displays cyan, the reflective liquid crystal layer 253 of the first liquid crystal element 25 can be switched to a focal conic state by the driver 254 of the first liquid crystal element 25, the reflective liquid crystal layer 263 of the second liquid crystal element 26 can be switched to a reflective state by the driver 264 of the second liquid crystal element 26, and the reflective liquid crystal layer 273 of the third liquid crystal element 27 can be switched to a reflective state by the driver 274 of the third liquid crystal element 27. The third liquid crystal element 27 reflects blue light, and the second liquid crystal element 26 reflects green light. The combination of green and blue light displays cyan. When the display device displays yellow, the reflective liquid crystal layer 253 of the first liquid crystal element 25 can be switched to a reflective state by the driver 254 of the first liquid crystal element 25, the reflective liquid crystal layer 263 of the second liquid crystal element 26 can be switched to a reflective state by the driver 264 of the second liquid crystal element 26, and the reflective liquid crystal layer 273 of the third liquid crystal element 27 can be switched to a focal conic state by the driver 274 of the third liquid crystal element 27. The first liquid crystal element 25 reflects red light, and the second liquid crystal element 26 reflects green light. The combination of red and green light displays yellow. When the display device displays purple, the reflective liquid crystal layer 253 of the first liquid crystal element 25 can be switched to a reflective state by the driver 254 of the first liquid crystal element 25, the reflective liquid crystal layer 263 of the second liquid crystal element 26 can be switched to a focal conic state by the driver 264 of the second liquid crystal element 26, and the reflective liquid crystal layer 273 of the third liquid crystal element 27 can be switched to a reflective state by the driver 274 of the third liquid crystal element 27. The first liquid crystal element 25 reflects red light, and the third liquid crystal element 27 reflects blue light. The combination of red and blue light displays purple. The display device provided in FIG9 of the present disclosure can realize eight color displays of black, white, red, green, blue, cyan, yellow and purple in the above manner, thereby realizing color display of the display device and improving the display effect of the display device.

[0217] In an exemplary embodiment, FIG11 is a fourth schematic structural diagram of a display device provided in an exemplary embodiment. As shown in FIG11 , the at least two liquid crystal elements may include a first liquid crystal element 28 and a second liquid crystal element 29. The first liquid crystal element 28 includes a first substrate 281, a second substrate 282, a reflective liquid crystal layer 283, a driver 284, and a sealant 285. The second liquid crystal element 29 includes a first substrate 293, a second substrate 292, a reflective liquid crystal layer 293, a driver 294, and a sealant 295. When the reflective liquid crystal layer 283 of the first liquid crystal element 28 is in a reflective state, the first liquid crystal element 28 reflects light of a first color, and when the reflective liquid crystal layer 293 of the second liquid crystal element 29 is in a reflective state, the second liquid crystal element 29 reflects light of a second color. The first color is either left-handed polarized light or right-handed polarized light, and the second color is the other of the left-handed polarized light or right-handed polarized light. The first and second colors are the same.

[0218] In an exemplary embodiment, in the display device provided in FIG. 11 , the distance between the first electrode and the second electrode of any subpixel in the first liquid crystal element 28 is the same as the distance between the first electrode and the second electrode of any subpixel in the second liquid crystal element 29 .

[0219] In an exemplary embodiment, the first liquid crystal element 28 may be located on a side of the second liquid crystal element 29 that is close to the light absorbing layer 10, or may be located on a side of the second liquid crystal element 29 that is away from the light absorbing layer 10. FIG11 illustrates an example in which the first liquid crystal element 28 may be located on a side of the second liquid crystal element 29 that is close to the light absorbing layer 10.

[0220] In an exemplary embodiment, the first color light in the display device provided in FIG11 is either left-handed polarized light or right-handed polarized light, and the second color light is the other of the left-handed polarized light or right-handed polarized light.

[0221] In an exemplary embodiment, the alignment deviation between the first liquid crystal element 28 and the second liquid crystal element 29 is less than or equal to 5 microns. For example, high-precision lamination equipment can be used to laminate the first liquid crystal element 28 and the second liquid crystal element 29. Laminating the first liquid crystal element 28 and the second liquid crystal element 29 with a deviation of less than or equal to 5 microns can prevent light leakage, moiré patterns, and rainbow patterns in the display device, thereby improving the display quality of the display device.

[0222] In an exemplary embodiment, FIG12 is a fifth structural diagram of a display device provided in an exemplary embodiment. As shown in FIG12 , the at least two liquid crystal elements may include a first liquid crystal element 31 and a second liquid crystal element 32. The first liquid crystal element 31 includes a first substrate 311, a second substrate 312, a reflective liquid crystal layer 313, a driver 314, and a sealant 315. The second liquid crystal element 32 includes a first substrate 323, a second substrate 322, a reflective liquid crystal layer 323, a driver 324, and a sealant 325.

[0223] In an exemplary embodiment, as shown in FIG12 , the liquid crystals in the first liquid crystal element 31 include first liquid crystals 3131 and second liquid crystals 3132, and the liquid crystals in the second liquid crystal element 32 include first liquid crystals 3231 and second liquid crystals 3232. The first liquid crystals 3131 in the first liquid crystal element 31 and the first liquid crystals 3231 in the second liquid crystal element 32 are liquid crystals of a first color, and the second liquid crystals 3132 in the first liquid crystal element 31 and the second liquid crystals 3232 in the second liquid crystal element 32 are liquid crystals of a second color.

[0224] In an exemplary embodiment, as shown in FIG12 , the first liquid crystal 3131 and the second liquid crystal 3132 in the first liquid crystal element 31 are left-handed cholesteric liquid crystals, and the first liquid crystal 3231 and the second liquid crystal 3232 in the second liquid crystal element 32 are right-handed cholesteric liquid crystals. Alternatively, the first liquid crystal 3131 and the second liquid crystal 3132 in the first liquid crystal element 31 are right-handed cholesteric liquid crystals, and the first liquid crystal 3231 and the second liquid crystal 3232 in the second liquid crystal element 32 are left-handed cholesteric liquid crystals. Alternatively, the first liquid crystal 3131 in the first liquid crystal element 31 is left-handed cholesteric liquid crystals. Liquid crystal, the second liquid crystal 3132 in the first liquid crystal element 31 is a right-handed cholesteric phase, the first liquid crystal 3231 in the second liquid crystal element 32 is a right-handed cholesteric phase liquid crystal, and the second liquid crystal 3232 in the second liquid crystal element 32 is a left-handed cholesteric phase, or the first liquid crystal 3131 in the first liquid crystal element 31 is a right-handed cholesteric phase liquid crystal, the second liquid crystal 3132 in the first liquid crystal element 31 is a left-handed cholesteric phase liquid crystal, the first liquid crystal 3231 in the second liquid crystal element 32 is a left-handed cholesteric phase liquid crystal, and the second liquid crystal 3232 in the second liquid crystal element 32 is a right-handed cholesteric phase liquid crystal.

[0225] In an exemplary embodiment, as shown in FIG12 , the first and second liquid crystals are different colors, and the superposition of the color of light reflected by the first and second liquid crystals is white. Exemplarily, the first and second liquid crystals are red cholesteric liquid crystals and cyan cholesteric liquid crystals, or yellow cholesteric liquid crystals and blue cholesteric liquid crystals.

[0226] In an exemplary embodiment, the present disclosure can achieve four-color display of a display device by disposing two different colors of cholesteric liquid crystals in a plurality of liquid crystal elements, thereby improving the display effect of the display device.

[0227] In an exemplary embodiment, as shown in FIG12 , the distance between the first electrode and the second electrode of the sub-pixel where the first liquid crystal 3131 in the first liquid crystal element 31 is located is the same as the distance between the first electrode and the second electrode of the sub-pixel where the first liquid crystal 32131 in the second liquid crystal element 32 is located, and the distance between the first electrode and the second electrode of the sub-pixel where the second liquid crystal 3132 in the first liquid crystal element 31 is located is the same as the distance between the first electrode and the second electrode of the sub-pixel where the second liquid crystal 3232 in the second liquid crystal element 32 is located.

[0228] In an exemplary embodiment, as shown in FIG12 , when the first color liquid crystal and the second color liquid crystal are one of red cholesteric liquid crystal and cyan cholesteric liquid crystal, the distance between the first electrode and the second electrode of the sub-pixel where the liquid crystal reflecting red light is located is greater than the distance between the first electrode and the second electrode of the sub-pixel where the liquid crystal reflecting cyan light is located;

[0229] In an exemplary embodiment, as shown in FIG12 , when the first color liquid crystal and the second color liquid crystal are one of yellow cholesteric liquid crystal and blue cholesteric liquid crystal, the distance between the first electrode and the second electrode of the sub-pixel where the liquid crystal reflecting yellow light is located is greater than the distance between the first electrode and the second electrode of the sub-pixel where the liquid crystal reflecting blue light is located.

[0230] In an exemplary embodiment, as shown in FIG12 , the orthographic projection of the sub-pixel including the first liquid crystal 3131 in the first liquid crystal element 31 on the light absorption layer at least partially overlaps with the orthographic projection of the sub-pixel including the first liquid crystal 3231 in the second liquid crystal element 32 on the light absorption layer, and there is no overlapping area with the orthographic projection of the sub-pixel including the second liquid crystal 3232 in the second liquid crystal element 32 on the light absorption layer.

[0231] In an exemplary embodiment, as shown in FIG12 , the orthographic projection of the sub-pixel including the second liquid crystal 3132 in the first liquid crystal element 31 on the light absorption layer at least partially overlaps with the orthographic projection of the sub-pixel including the second liquid crystal 3232 in the second liquid crystal element 32 on the light absorption layer, and there is no overlapping area with the orthographic projection of the sub-pixel including the first liquid crystal 3231 in the second liquid crystal element 32 on the light absorption layer.

[0232] In an exemplary embodiment, as shown in FIG12 , the liquid crystal element includes a separation structure disposed between a first substrate and a second substrate. The first liquid crystal element 31 includes a separation structure 316 , and the second liquid crystal element includes a separation structure 326 .

[0233] In an exemplary embodiment, FIG13 is a sixth schematic structural diagram of a display device provided in an exemplary embodiment. FIG14 is a partial schematic diagram of the first liquid crystal element in FIG13 , FIG15 is a partial schematic diagram of the second liquid crystal element in FIG13 , and FIG16 is a partial schematic diagram of the third liquid crystal element in FIG13 . As shown in FIG13 to FIG16 , the display device includes a light absorbing layer 10 and a first liquid crystal element 33, a second liquid crystal element 34, and a third liquid crystal element 35 stacked on the light absorbing layer 10. The first liquid crystal element 33 includes a first substrate 331, a second substrate 332, a reflective liquid crystal layer 333, a driver 334, a sealant 335, and a spacer structure 336. The second liquid crystal element 34 includes a first substrate 343, a second substrate 342, a reflective liquid crystal layer 343, a driver 344, a sealant 345, and a spacer structure 346. The third liquid crystal element 35 includes a first substrate 353, a second substrate 352, a reflective liquid crystal layer 353, a driver 354, a sealant 355, and a spacer structure 356. The reflective liquid crystal layer in the first to third liquid crystal elements includes a first liquid crystal and a second liquid crystal.

[0234] In the exemplary embodiment, in the display device shown in FIG. 13 , the first liquid crystal 3331 in the first liquid crystal element 33 and the first liquid crystal 3431 in the second liquid crystal element 34 are first-color liquid crystals, the second liquid crystal 3332 in the first liquid crystal element 33 and the first liquid crystal 3531 in the third liquid crystal element 35 are second-color liquid crystals, and the second liquid crystal 3432 in the second liquid crystal element 34 and the second liquid crystal 3532 in the third liquid crystal element 35 are third-color liquid crystals. The first, second, and third liquid crystals are different colors, and the combined color of light reflected by the first, second, and third liquid crystals is white.

[0235] In an exemplary embodiment, the overall color mixing effect is mainly considered when observing with the human eye. The blue cholesteric liquid crystal is placed away from the light-absorbing layer, and the red cholesteric liquid crystal is placed to the side. On the one hand, the lower blue cholesteric liquid crystal can reduce the influence of the display device itself on the reflectivity; on the other hand, the blue wavelength is shorter, and when observed from a side angle, the optical path becomes longer, which easily causes color deviation toward the long wavelength direction. Placing the liquid crystal element containing the blue cholesteric liquid crystal away from the light-absorbing layer can minimize the optical path of the reflected light, thereby reducing color deviation.

[0236] In the exemplary embodiment, in the display device provided in FIG13, one of the first liquid crystals in the first liquid crystal element 33 and the first liquid crystals in the second liquid crystal element 34 is a left-handed cholesteric liquid crystal, the other of the first liquid crystals in the first liquid crystal element 33 and the first liquid crystals in the second liquid crystal element 34 is a right-handed cholesteric liquid crystal, the second liquid crystal in the first liquid crystal element 33 and the first liquid crystal in the third liquid crystal element 35 is a left-handed cholesteric liquid crystal, the second liquid crystal in the first liquid crystal element 33 and the first liquid crystal in the third liquid crystal element 35 is a right-handed cholesteric liquid crystal, and the second liquid crystal in the second liquid crystal element 34 is a left-handed cholesteric liquid crystal. One of the second liquid crystals in the first liquid crystal element 31 and the third liquid crystal element 35 is a left-handed cholesteric liquid crystal, the other of the second liquid crystals in the second liquid crystal element 34 and the second liquid crystals in the third liquid crystal element 35 is a right-handed cholesteric liquid crystal, the first liquid crystal and the second liquid crystal in the first liquid crystal element 33 are either left-handed cholesteric liquid crystal or right-handed cholesteric liquid crystal, one of the first liquid crystal and the second liquid crystal in the second liquid crystal element 34 is a left-handed cholesteric liquid crystal, the other of the first liquid crystal and the second liquid crystal in the second liquid crystal element 34 is a right-handed cholesteric liquid crystal, and the first liquid crystal and the second liquid crystal in the third liquid crystal element 35 are either left-handed cholesteric liquid crystal or right-handed cholesteric liquid crystal. In the exemplary embodiment, FIG. 13 to FIG. 16 show that the first liquid crystal 3131 and the second liquid crystal 3132 in the first liquid crystal element 33 are right-handed cholesteric liquid crystals, the first liquid crystal 3431 in the second liquid crystal element 34 is a left-handed cholesteric liquid crystal, the second liquid crystal 3432 in the second liquid crystal element 34 is a right-handed cholesteric liquid crystal, and the first liquid crystal 3531 and the second liquid crystal 3532 in the third liquid crystal element 35 are right-handed cholesteric liquid crystals. The display device provided in Figure 13 includes a first color liquid crystal that can reflect left-handed polarized light, a first color liquid crystal that can reflect right-handed polarized light, a second color liquid crystal that can reflect left-handed polarized light, a second color liquid crystal that can reflect right-handed polarized light, a third color liquid crystal that can reflect left-handed polarized light, and a third color liquid crystal that can reflect right-handed polarized light. That is, each color of liquid crystal is matched with left-handed and right-handed liquid crystals, which can ensure the light utilization rate of the display device, improve the reflectivity of the display device to multiple colors, and also ensure the color display of the display device.

[0237] In an exemplary embodiment, as shown in Figures 14 to 16, the distance between the first electrode and the second electrode of the sub-pixel where the first liquid crystal in the first liquid crystal element is located is the same as the distance between the first electrode and the second electrode of the sub-pixel where the first liquid crystal in the second liquid crystal element is located; the distance between the first electrode and the second electrode of the sub-pixel where the second liquid crystal in the first liquid crystal element is located is the same as the distance between the first electrode and the second electrode of the sub-pixel where the first liquid crystal in the third liquid crystal element is located; and the distance between the first electrode and the second electrode of the sub-pixel where the second liquid crystal in the second liquid crystal element is located is the same as the distance between the first electrode and the second electrode of the sub-pixel where the second liquid crystal in the third liquid crystal element is located.

[0238] In an exemplary embodiment, the first color liquid crystal, the second color liquid crystal, and the third color liquid crystal are one of red cholesteric liquid crystal, green cholesteric liquid crystal, and blue cholesteric liquid crystal.

[0239] In an exemplary embodiment, as shown in Figures 14 to 16, the distance between the first electrode and the second electrode of the sub-pixel where the first color liquid crystal is located is greater than the distance between the first electrode and the second electrode of the sub-pixel where the second color liquid crystal is located, and the distance between the first electrode and the second electrode of the sub-pixel where the second color liquid crystal is located is greater than the distance between the first electrode and the second electrode of the sub-pixel where the third color liquid crystal is located.

[0240] In an exemplary embodiment, the distance between the first electrode and the second electrode of the sub-pixel where the first color liquid crystal is located ranges from 5.8 microns to 6.2 microns. For example, the distance between the first electrode and the second electrode of the sub-pixel where the first color liquid crystal is located ranges from 6 microns.

[0241] In an exemplary embodiment, the distance between the first electrode and the second electrode of the sub-pixel where the second color liquid crystal is located ranges from 4.8 micrometers to 5.2 micrometers. Exemplarily, the distance between the first electrode and the second electrode of the sub-pixel where the second color liquid crystal is located ranges from 5 micrometers.

[0242] In an exemplary embodiment, the distance between the first electrode and the second electrode of the sub-pixel where the third color liquid crystal is located ranges from 3.8 micrometers to 4.2 micrometers. Exemplarily, the distance between the first electrode and the second electrode of the sub-pixel where the third color liquid crystal is located ranges from 4 micrometers.

[0243] The following describes in detail how the display device shown in FIG13 achieves eight-color display: black, white, red, green, blue, cyan, yellow, and purple. For example, when the display device displays black, the first color is red, the second color is green, and the third color is blue. The driver 334 of the first liquid crystal element 33 switches the first and second liquid crystals in the reflective liquid crystal layer 333 of the first liquid crystal element 33 to a focal conic state. The driver 344 of the second liquid crystal element 34 switches the first and second liquid crystals in the reflective liquid crystal layer 343 of the second liquid crystal element 34 to a focal conic state. The driver 354 of the third liquid crystal element 35 switches the first and second liquid crystals in the reflective liquid crystal layer 353 of the third liquid crystal element 35 to a focal conic state. The first, second, and third liquid crystal elements 33, 34, and 35 do not reflect the corresponding colors. External light passes through the third, second, and first liquid crystal elements 35, 34, and 33 and reaches the light absorbing layer 10, where it is absorbed. At this point, the display device displays black. When the display device displays white, the first liquid crystal and the second liquid crystal in the reflective liquid crystal layer 333 of the first liquid crystal element 33 can be switched to a reflective state by the driver 334 of the first liquid crystal element 33, the first liquid crystal and the second liquid crystal in the reflective liquid crystal layer 343 of the second liquid crystal element 34 can be switched to a reflective state by the driver 344 of the second liquid crystal element 34, and the first liquid crystal and the second liquid crystal in the reflective liquid crystal layer 353 of the third liquid crystal element 35 can be switched to a reflective state by the driver 354 of the third liquid crystal element 35. The first liquid crystal element 33 reflects red light and green light, the second liquid crystal element 34 reflects red light and blue light, and the third liquid crystal element 35 emits blue light and green light. The red light, green light and blue light are combined to display white. When the display device displays red, the first liquid crystal in the reflective liquid crystal layer 333 of the first liquid crystal element 33 can be switched to a reflective state, and the second liquid crystal can be switched to a focal conic state through the driver 334 of the first liquid crystal element 33; the first liquid crystal in the reflective liquid crystal layer 343 of the second liquid crystal element 34 can be switched to a reflective state, and the second liquid crystal can be switched to a focal conic state through the driver 344 of the second liquid crystal element 34; the first liquid crystal and the second liquid crystal in the reflective liquid crystal layer 353 of the third liquid crystal element 35 can be switched to a focal conic state through the driver 354 of the third liquid crystal element 35; external light passes through the third liquid crystal element 35 to reach the second liquid crystal element 33; the first liquid crystal element 33 and the second liquid crystal element 34 reflect red light; at this time, the display device displays red.When the display device displays green, the first liquid crystal in the reflective liquid crystal layer 333 of the first liquid crystal element 33 can be switched to a focal conic state, and the second liquid crystal can be switched to a reflective state through the driver 334 of the first liquid crystal element 33; the first liquid crystal and the second liquid crystal in the reflective liquid crystal layer 343 of the second liquid crystal element 34 can be switched to a focal conic state through the driver 344 of the second liquid crystal element 34; the first liquid crystal in the reflective liquid crystal layer 353 of the third liquid crystal element 35 can be switched to a reflective state, and the second liquid crystal can be switched to a focal conic state through the driver 354 of the third liquid crystal element 35; the first liquid crystal element 33 and the third liquid crystal element 35 reflect green light. At this time, the display device displays green. When the display device displays blue, the first liquid crystal and the second liquid crystal in the reflective liquid crystal layer 333 of the first liquid crystal element 33 can be switched to the focal conic state through the driver 334 of the first liquid crystal element 33, the first liquid crystal in the reflective liquid crystal layer 343 of the second liquid crystal element 34 can be switched to the focal conic state and the second liquid crystal can be switched to the reflective state through the driver 344 of the second liquid crystal element 34, the first liquid crystal in the reflective liquid crystal layer 353 of the third liquid crystal element 35 can be switched to the focal conic state and the second liquid crystal can be switched to the reflective state through the driver 354 of the third liquid crystal element 35, the second liquid crystal can be switched to the reflective state, the second liquid crystal element 34 and the third liquid crystal element 35 reflect blue light. At this time, the display device displays blue. When the display device displays cyan, the first liquid crystal in the reflective liquid crystal layer 333 of the first liquid crystal element 33 can be switched to a focal conic state and the second liquid crystal can be switched to a reflective state through the driver 334 of the first liquid crystal element 33; the first liquid crystal in the reflective liquid crystal layer 343 of the second liquid crystal element 34 can be switched to a focal conic state and the second liquid crystal can be switched to a reflective state through the driver 344 of the second liquid crystal element 34; the first liquid crystal and the second liquid crystal in the reflective liquid crystal layer 353 of the third liquid crystal element 35 can be switched to a reflective state through the driver 354 of the third liquid crystal element 35; the first liquid crystal element 33 reflects green light, the second liquid crystal element 34 reflects blue light, and the third liquid crystal element 35 reflects blue light and green light; the combination of green light and blue light displays cyan. When the display device displays yellow, the first liquid crystal and the second liquid crystal in the reflective liquid crystal layer 333 of the first liquid crystal element 33 can be switched to a reflective state through the driver 334 of the first liquid crystal element 33, the first liquid crystal in the reflective liquid crystal layer 343 of the second liquid crystal element 34 can be switched to a reflective state and the second liquid crystal can be switched to a focal conic state through the driver 344 of the second liquid crystal element 34, the first liquid crystal in the reflective liquid crystal layer 353 of the third liquid crystal element 35 can be switched to a reflective state and the second liquid crystal can be switched to a focal conic state through the driver 354 of the third liquid crystal element 35, the first liquid crystal element 33 reflects red light and green light, the second liquid crystal element 34 reflects red light, and the third liquid crystal element 35 reflects green light, and the red light and green light are combined to display yellow.When the display device displays purple, the driver 334 of the first liquid crystal element 33 can switch the first liquid crystal in the reflective liquid crystal layer 333 of the first liquid crystal element 33 to a reflective state, and the second liquid crystal to a focal conic state. The driver 344 of the second liquid crystal element 34 can switch the first liquid crystal and the second liquid crystal in the reflective liquid crystal layer 343 of the second liquid crystal element 34 to a reflective state. The driver 354 of the third liquid crystal element 35 can switch the first liquid crystal in the reflective liquid crystal layer 353 of the third liquid crystal element 35 to a focal conic state, and the second liquid crystal to a reflective state. The first liquid crystal element 33 reflects red light, the second liquid crystal element 34 reflects red light and blue light, and the third liquid crystal element 35 reflects blue light. The combination of red light and blue light displays purple. The display device provided in FIG13 of the present disclosure can realize the display of eight colors: black and white, red, green, blue, cyan, yellow, and purple in the above manner, realizing color display of the display device and improving the display effect of the display device.

[0244] Figure 17 is a top view of a liquid crystal cell. As shown in Figure 17 , the isolation structure 206 is configured to separate the first liquid crystal 2031 and the second liquid crystal 2032. The isolation structure 206 divides the liquid crystal cell into a first region R1 and a second region R2, which are independent of each other. The sealant 205 is provided with a first crystal filling port 2051 and a second crystal filling port 2052. The first crystal filling port 2051 is configured to fill the first liquid crystal 2031 into one of the first and second regions R1, R2 of the liquid crystal cell, and the second crystal filling port 2052 is configured to fill the second liquid crystal 2032 into the other of the first and second regions R1, R2 of the liquid crystal cell. The liquid crystals in the first region are interconnected, and the liquid crystals in the second region are interconnected. The isolation structure in Figure 17 can be any of the isolation structures in Figures 12 and 13 .

[0245] FIG18 is a schematic diagram of the isolation structure. In an exemplary embodiment, as shown in FIG18 , the isolation structure 50 includes a first connecting portion 51, a second connecting portion 52, N third connecting portions 53, and N-1 fourth connecting portions 54, where N is a positive integer greater than or equal to 2. FIG18 is illustrative using N=6 as an example.

[0246] In an exemplary embodiment, as shown in FIG. 18 , the first connection portion 51 , the second connection portion 52 , and the fourth connection portion 54 extend along a first direction D1 , and the third connection portion 53 extends along a second direction D2 , and the first direction D1 and the second direction D2 intersect;

[0247] In an exemplary embodiment, as shown in Figure 18, one end of the first connecting portion 51 is connected to the middle of the first inner wall of the sealing glue 205, the other end of the first connecting portion 51 is connected to the middle of the first third connecting portion 53, one end of the first third connecting portion 53 is connected to one end of the first fourth connecting portion 54, the other end of the first fourth connecting portion 54 is connected to one end of the second third connecting portion 53, the other end of the i-th third connecting portion 53 is connected to one end of the i-th fourth connecting portion 54, the other end of the i-th fourth connecting portion 54 is connected to one end of the i+1-th third connecting portion 53, one end of the second connecting portion 52 is connected to the middle of the second inner wall of the sealing glue 205, and the other end of the second connecting portion 52 is connected to the middle of the N-th third connecting portion 53; the first inner wall and the second inner wall are arranged opposite to each other, 2≤i≤N-1.

[0248] In an exemplary embodiment, as shown in FIG. 18 , the third connection portion 53 and the fourth connection portion 54 form a “bow”-shaped structure, which can increase the space where the liquid crystal is located, thereby improving the display effect of the display device.

[0249] In an exemplary embodiment, as shown in FIG. 18 , the length of the third connection portion 53 along the second direction D2 is greater than the length of any one of the first connection portion 51 , the second connection portion 52 , and the fourth connection portion 54 along the first direction D1 .

[0250] In an exemplary embodiment, the isolation structure may be a viscous isolation column retaining wall.

[0251] In an exemplary embodiment, FIG19 is another schematic diagram of the structure of a display device. As shown in FIG19 , the display device includes a light absorbing layer 10, a liquid crystal element layer 20, and a protective cover plate 30. The protective cover plate 30 is located on the side of the liquid crystal element layer 20 away from the light absorbing layer 10.

[0252] In exemplary embodiments, because the free energy of the planar texture state of the cholesteric liquid crystal is low, and the free energy of the focal conic texture state or the dehelical state of the cholesteric liquid crystal is high, the cholesteric liquid crystal in the focal conic texture state or the dehelical state will transform into the planar texture state under the action of external pressure. Therefore, the pressure resistance of the display device is not high. The present disclosure can improve the pressure resistance of the display device by providing a protective cover plate on the liquid crystal element layer and providing a gap between the protective cover plate and the liquid crystal element layer.

[0253] In an exemplary embodiment, the distance between the protective cover 30 and the liquid crystal element layer 20 ranges from 1 mm to 1.5 mm. For example, the distance between the protective cover 30 and the liquid crystal element layer 20 may be 1.2 mm. In an exemplary embodiment, when the distance between the protective cover 30 and the liquid crystal element layer 20 is 1.2 mm, the display device can withstand a force of up to 45 Newtons.

[0254] In an exemplary embodiment, when the distance between the protective cover 30 and the liquid crystal cell layer 20 is less than 1.2 mm, the display device can withstand a force of less than 40 Newtons. When the distance between the protective cover 30 and the liquid crystal cell layer 20 is greater than 1.2 mm, the display device experiences significant light loss, with reflectivity attenuated by up to 10%. Therefore, a distance of 1.2 mm between the protective cover 30 and the liquid crystal cell layer 20 ensures the display device's compressive strength while also maintaining its display quality.

[0255] In an exemplary embodiment, the protective cover 30 may be a glass cover.

[0256] In an exemplary embodiment, the present disclosure can perform AG treatment on the surface of the glass cover plate so that the haze range of the glass cover plate is about 10% to 15%. The treatment of the glass cover plate by the present disclosure can prevent the surface of the glass cover plate from generating mirror reflection, improve the display effect of the display device, and enhance the visual experience of the human eye.

[0257] In an exemplary embodiment, the liquid crystal in the liquid crystal element that reflects left-handedly polarized light in the reflective state is doped with a left-handed chiral agent, thereby enabling the liquid crystal element to reflect left-handedly polarized light.

[0258] In an exemplary embodiment, the liquid crystal in the liquid crystal element that reflects right-handed polarized light in the reflective state is doped with a right-handed chiral agent, thereby enabling the liquid crystal element to reflect left-handed polarized light.

[0259] In an exemplary embodiment, the reflective liquid crystal layer in the liquid crystal cell includes: cholesteric liquid crystal and acrylic polymer, wherein the content of the acrylic polymer ranges from 3% to 5%. For example, the content of the acrylic polymer may be 4%.

[0260] In an exemplary embodiment, an acrylic polymer is added to the cholesteric liquid crystal of the liquid crystal element, and the cholesteric liquid crystal and the acrylic polymer undergo a polymerization reaction through ultraviolet irradiation to form a helical polymer skeleton structure, thereby making the state of the reflective liquid crystal layer relatively stable, thereby improving the pressure resistance of the display device.

[0261] Figure 20 is another top view of the liquid crystal element, Figure 21 is a cross-sectional view of Figure 20 along line AA, and Figure 22 is a cross-sectional view of Figure 20 along line BB. To clarify the structure of the liquid crystal element, the black matrix layer is not shown in Figure 20. However, the black matrix layer actually exists and covers the scan signal line Gate and the data signal line Data. As shown in Figures 20 and 22, 61 and 62 are the first electrodes of two adjacent sub-pixels located on either side of the data signal line Data, respectively. 63 and 64 are the first electrodes of two adjacent sub-pixels located on either side of the scan signal line Gate. The black matrix layer includes a first black matrix structure BM1 and a second black matrix structure BM2. The orthographic projection of the first black matrix structure BM1 on the light-absorbing layer at least partially overlaps with the orthographic projection of the data signal line Data on the light-absorbing layer, and the orthographic projection of the second black matrix structure BM2 on the light-absorbing layer at least partially overlaps with the orthographic projection of the scan signal line Gate on the light-absorbing layer.

[0262] In an exemplary embodiment, as shown in Figures 21 and 22, the distance between the orthographic projection of the first black matrix structure BM1 on the light absorption layer and the orthographic projection of the first electrode of any sub-pixel located on both sides of the data signal line Data on the light absorption layer is a first distance, and the distance between the orthographic projection of the second black matrix structure BM2 on the light absorption layer and the orthographic projection of the first electrode of any sub-pixel located on both sides of the scan signal line Gate on the light absorption layer is a second distance, and the first distance is greater than the second distance.

[0263] In an exemplary embodiment, as shown in FIG. 21 and FIG. 22 , the first distance may be 0.5 micrometers, and the second distance may be 0 micrometers.

[0264] In an exemplary embodiment, as shown in FIG22 , a distance H1 between an orthographic projection of a boundary of one of two adjacent sub-pixels located on both sides of the data signal line Data near the data signal line Data and an orthographic projection of a boundary of the other sub-pixel located on the light absorbing layer near the first black matrix structure BM1 is greater than the fitting deviation of adjacent liquid crystal elements.

[0265] In an exemplary embodiment, H1 may be in the range of 6 micrometers. The present disclosure can avoid light leakage, moiré and rainbow patterns in the display device by setting H1 to be greater than the alignment deviation of adjacent liquid crystal elements, thereby improving the display effect of the display device.

[0266] In an exemplary embodiment, as shown in FIG22 , a distance Y1 between an orthographic projection of a boundary of one of two adjacent sub-pixels located on both sides of the scanning signal line Gate near the scanning signal line Gate on the light absorbing layer and an orthographic projection of a boundary of the other sub-pixel located on both sides of the scanning signal line Gate near the second black matrix structure BN2 on the light absorbing layer is greater than the fitting deviation of adjacent liquid crystal elements.

[0267] In an exemplary embodiment, Y1 may be in the range of 7 micrometers. The present disclosure can avoid light leakage, moiré and rainbow patterns in the display device by setting Y1 to be greater than the alignment deviation of adjacent liquid crystal elements, thereby improving the display effect of the display device.

[0268] In an exemplary embodiment, as shown in FIG. 21 , the line width W1 of the data signal line Data is in the range of 3 micrometers.

[0269] In an exemplary embodiment, as shown in FIG. 21 , the line width W2 of the first black matrix structure BM1 is in the range of 9 micrometers.

[0270] In an exemplary embodiment, as shown in FIG. 21 , a distance H2 between the first electrodes of two adjacent sub-pixels located on both sides of the data signal line Data is in the range of 10 micrometers.

[0271] In an exemplary embodiment, as shown in FIG21 , a distance H3 between the orthographic projection of the data signal line Data on the light absorption layer and the first electrode of one of the two adjacent sub-pixels located on both sides of the data signal line Data is in a range of 3.5 microns, and a distance H4 between the orthographic projection of the data signal line Data on the light absorption layer and the first electrode of the other of the two adjacent sub-pixels located on both sides of the data signal line Data is in a range of 3.5 microns.

[0272] In an exemplary embodiment, as shown in FIG21 , a distance H5 between an orthographic projection of a boundary of the data signal line Data near one of the two adjacent sub-pixels located on either side of the data signal line Data on the light absorption layer and an orthographic projection of a boundary of the first black matrix structure BM1 near one of the two adjacent sub-pixels located on either side of the data signal line Data on the light absorption layer is in a range of 3 micrometers. A distance H6 between an orthographic projection of a boundary of the data signal line Data near the other of the two adjacent sub-pixels located on either side of the data signal line Data on the light absorption layer and an orthographic projection of a boundary of the first black matrix structure BM1 near the other of the two adjacent sub-pixels located on either side of the data signal line Data on the light absorption layer is in a range of 3 micrometers.

[0273] In an exemplary embodiment, as shown in FIG. 22 , the line width X1 of the scanning signal line Gate is in the range of 4 micrometers.

[0274] In an exemplary embodiment, as shown in FIG. 22 , the line width X2 of the second black matrix structure BM2 ranges from 10 micrometers.

[0275] In an exemplary embodiment, as shown in FIG. 21 , a distance Y2 between the first electrodes of two adjacent sub-pixels located on both sides of the scan signal line Gate is in the range of 10 micrometers.

[0276] In an exemplary embodiment, as shown in FIG21 , a distance Y3 between the orthographic projection of the scanning signal line Gate on the light absorption layer and the first electrode of one of the two adjacent sub-pixels located on both sides of the scanning signal line Gate is in a range of 3 microns, and a distance Y4 between the orthographic projection of the scanning signal line Gate on the light absorption layer and the first electrode of the other of the two adjacent sub-pixels located on both sides of the scanning signal line Gate is in a range of 3 microns.

[0277] The present disclosure also provides a method for driving a display device, which is configured to drive a display device. The display device is the display device provided by any of the aforementioned embodiments, and the implementation principle and effect are similar, which will not be repeated here.

[0278] The driving method of the display device includes providing signals to a first substrate and a second substrate of at least two liquid crystal elements so that the reflective liquid crystal layers of the at least two liquid crystal elements switch between a focal conic state and a reflective state.

[0279] In an exemplary embodiment, the at least two liquid crystal elements include a first liquid crystal element and a second liquid crystal element, the first liquid crystal element reflects a first color light, the second liquid crystal element reflects a second color light, and the first color and the second color are different. Providing signals to the first substrate and the second substrate of the at least two liquid crystal elements so that the reflective liquid crystal layers of the at least two liquid crystal elements switch between a focal conic state and a reflective state includes: providing signals to the first substrate and the second substrate of the first liquid crystal element so that the reflective liquid crystal layer of the first liquid crystal element is in the focal conic state, providing signals to the first substrate and the second substrate of the second liquid crystal element so that the reflective liquid crystal layer of the second liquid crystal element is in the focal conic state, and the display device displays black; providing signals to the first substrate and the second substrate of the first liquid crystal element so that the reflective liquid crystal layer of the first liquid crystal element is in the reflective state, and providing signals to the first substrate and the second substrate of the second liquid crystal element so that the reflective liquid crystal layer of the second liquid crystal element is in the focal conic state. The reflective liquid crystal layer is in a focal conic state, and the display device displays a first color; a signal is provided to the first substrate and the second substrate of the first liquid crystal element, so that the reflective liquid crystal layer of the first liquid crystal element is in a focal conic state, and a signal is provided to the first substrate and the second substrate of the second liquid crystal element, so that the reflective liquid crystal layer of the second liquid crystal element is in a reflective state, and the display device displays a second color; a signal is provided to the first substrate and the second substrate of the first liquid crystal element, so that the reflective liquid crystal layer of the first liquid crystal element is in a reflective state, and a signal is provided to the first substrate and the second substrate of the second liquid crystal element, so that the reflective liquid crystal layer of the second liquid crystal element is in a reflective state, and the display device displays a superimposed color of the first color and the second color.

[0280] In an exemplary embodiment, at least two liquid crystal elements include: a first liquid crystal element, a second liquid crystal element, and a third liquid crystal element, the first liquid crystal element reflects a first color light, the second liquid crystal element reflects a second color light, and the third liquid crystal element reflects a third color light, and any two of the first color, the second color, and the third color are different; providing signals to the first substrate and the second substrate of the at least two liquid crystal elements so that the reflective liquid crystal layers of the at least two liquid crystal elements switch between a focal conic state and a reflective state includes: providing signals to the first substrate and the second substrate of the first liquid crystal element so that the reflective liquid crystal layer of the first liquid crystal element is in the focal conic state, providing signals to the first substrate and the second substrate of the second liquid crystal element so that the reflective liquid crystal layer of the second liquid crystal element is in the focal conic state, and providing signals to the first substrate and the second substrate of the third liquid crystal element so that the reflective liquid crystal layer of the third liquid crystal element is in the focal conic state, and the display device displays black; providing signals to the first substrate and the second substrate of the first liquid crystal element so that the reflective liquid crystal layer of the first liquid crystal element is in the reflective state, providing signals to the first substrate and the second substrate of the second liquid crystal element so that the reflective liquid crystal layer of the second liquid crystal element is in the focal conic state, and providing signals to the first substrate and the second substrate of the third liquid crystal element so that the reflective liquid crystal layer of the third liquid crystal element is in the focal conic state, and the display device displays black; The device displays a first color; a signal is provided to the first substrate and the second substrate of the first liquid crystal element so that the reflective liquid crystal layer of the first liquid crystal element is in a focal conic state, a signal is provided to the first substrate and the second substrate of the second liquid crystal element so that the reflective liquid crystal layer of the second liquid crystal element is in a reflective state, and a signal is provided to the first substrate and the second substrate of the third liquid crystal element so that the reflective liquid crystal layer of the third liquid crystal element is in a focal conic state, and the display device displays a second color; a signal is provided to the first substrate and the second substrate of the first liquid crystal element so that the reflective liquid crystal layer of the first liquid crystal element is in a focal conic state, a signal is provided to the first substrate and the second substrate of the second liquid crystal element so that the reflective liquid crystal layer of the second liquid crystal element is in a focal conic state, and a signal is provided to the first substrate and the second substrate of the third liquid crystal element so that the reflective liquid crystal layer of the third liquid crystal element is in a reflective state, and the display device displays a third color; a signal is provided to the first substrate and the second substrate of the first liquid crystal element so that the reflective liquid crystal layer of the first liquid crystal element is in a reflective state, a signal is provided to the first substrate and the second substrate of the second liquid crystal element so that the reflective liquid crystal layer of the second liquid crystal element is in a reflective state, and a signal is provided to the first substrate and the second substrate of the third liquid crystal element so that the reflective liquid crystal layer of the third liquid crystal element is in a focal conic state, and the display device displays a superimposed color of the first color and the second color;A signal is provided to the first substrate and the second substrate of the first liquid crystal element so that the reflective liquid crystal layer of the first liquid crystal element is in a reflective state, a signal is provided to the first substrate and the second substrate of the second liquid crystal element so that the reflective liquid crystal layer of the second liquid crystal element is in a focal conic state, a signal is provided to the first substrate and the second substrate of the third liquid crystal element so that the reflective liquid crystal layer of the third liquid crystal element is in a reflective state, and the display device displays a superimposed color of the first color and the third color; a signal is provided to the first substrate and the second substrate of the first liquid crystal element so that the reflective liquid crystal layer of the first liquid crystal element is in a focal conic state, a signal is provided to the first substrate and the second substrate of the second liquid crystal element so that the reflective liquid crystal layer of the second liquid crystal element is in a focal conic state The liquid crystal layer is in a reflective state, a signal is provided to the first substrate and the second substrate of the third liquid crystal element, so that the reflective liquid crystal layer of the third liquid crystal element is in a reflective state, and the display device displays a superimposed color of the second color and the third color; a signal is provided to the first substrate and the second substrate of the first liquid crystal element, so that the reflective liquid crystal layer of the first liquid crystal element is in a reflective state, a signal is provided to the first substrate and the second substrate of the second liquid crystal element, so that the reflective liquid crystal layer of the second liquid crystal element is in a reflective state, and a signal is provided to the first substrate and the second substrate of the third liquid crystal element, so that the reflective liquid crystal layer of the third liquid crystal element is in a reflective state, and the display device displays a superimposed color of the first color, the second color, and the third color.

[0281] In an exemplary embodiment, at least two liquid crystal elements include: a first liquid crystal element and a second liquid crystal element, the first liquid crystal in the first liquid crystal element and the first liquid crystal in the second liquid crystal element are first color liquid crystals, the second liquid crystal in the first liquid crystal element and the second liquid crystal in the second liquid crystal element are second color liquid crystals, and the first color liquid crystal and the second color liquid crystal are liquid crystals of different colors; providing signals to the first substrate and the second substrate of the at least two liquid crystal elements so that the reflective liquid crystal layers of the at least two liquid crystal elements switch between the focal conic state and the reflective state includes: providing signals to the first substrate and the second substrate of the first liquid crystal element so that the first liquid crystal and the second liquid crystal in the reflective liquid crystal layer of the first liquid crystal element are in the focal conic state, providing signals to the first substrate and the second substrate of the second liquid crystal element so that the first liquid crystal and the second liquid crystal in the reflective liquid crystal layer of the second liquid crystal element are in the focal conic state, and the display device displays black; providing signals to the first substrate and the second substrate of the first liquid crystal element so that the first liquid crystal in the reflective liquid crystal layer of the first liquid crystal element is in the focal conic state The liquid crystal is in a reflective state, and the second liquid crystal is in a focal conic state. Signals are provided to the first substrate and the second substrate of the second liquid crystal element so that the first liquid crystal in the reflective liquid crystal layer of the second liquid crystal element is in a reflective state, and the second liquid crystal is in a focal conic state, and the display device displays a first color; signals are provided to the first substrate and the second substrate of the first liquid crystal element so that the first liquid crystal in the reflective liquid crystal layer of the first liquid crystal element is in a focal conic state, and the second liquid crystal is in a reflective state; signals are provided to the first substrate and the second substrate of the second liquid crystal element so that the first liquid crystal in the reflective liquid crystal layer of the second liquid crystal element is in a focal conic state, and the second liquid crystal is in a reflective state, and the display device displays a second color; signals are provided to the first substrate and the second substrate of the first liquid crystal element so that the first liquid crystal and the second liquid crystal in the reflective liquid crystal layer of the first liquid crystal element are in a reflective state, and signals are provided to the first substrate and the second substrate of the second liquid crystal element so that the first liquid crystal and the second liquid crystal in the reflective liquid crystal layer of the second liquid crystal element are in a reflective state, and the display device displays a superimposed color of the first color and the second color.

[0282] In an exemplary embodiment, at least two liquid crystal elements include: a first liquid crystal element, a second liquid crystal element, and a third liquid crystal element, wherein the first liquid crystal in the first liquid crystal element and the first liquid crystal in the second liquid crystal element are liquid crystals of a first color, the second liquid crystal in the first liquid crystal element and the first liquid crystal in the third liquid crystal element are liquid crystals of a second color, and the second liquid crystal in the second liquid crystal element and the second liquid crystal in the third liquid crystal element are liquid crystals of a third color; the driver provides signals to the first substrate and the second substrate so that the reflective liquid crystal layer switches between the focal conic state and the reflective state, comprising: providing signals to the first substrate and the second substrate of the first liquid crystal element so that the first liquid crystal and the second liquid crystal in the reflective liquid crystal layer of the first liquid crystal element are in the focal conic state, providing signals to the first substrate and the second substrate of the second liquid crystal element so that the first liquid crystal and the second liquid crystal in the reflective liquid crystal layer of the second liquid crystal element are in the focal conic state, and providing signals to the first substrate and the second substrate of the third liquid crystal element so that the first liquid crystal and the second liquid crystal in the reflective liquid crystal layer of the third liquid crystal element are in the focal conic state, and the display device displays black; providing signals to the first substrate and the second substrate of the first liquid crystal element so that the first liquid crystal in the reflective liquid crystal layer of the first liquid crystal element is in the reflective state and the second liquid crystal is in the focal conic state, and providing signals to the first substrate and the second substrate of the second liquid crystal element so that the second liquid crystal in the reflective liquid crystal layer of the second liquid crystal element is in the focal conic state. The first liquid crystal in the reflective liquid crystal layer of the third liquid crystal element is in a reflective state, and the second liquid crystal is in a focal conic state, a signal is provided to the first substrate and the second substrate of the third liquid crystal element, so that the first liquid crystal and the second liquid crystal in the reflective liquid crystal layer of the third liquid crystal element are in a focal conic state, and the display device displays a first color; a signal is provided to the first substrate and the second substrate of the first liquid crystal element, so that the first liquid crystal in the reflective liquid crystal layer of the first liquid crystal element is in a focal conic state, and the second liquid crystal is in a reflective state, a signal is provided to the first substrate and the second substrate of the second liquid crystal element, so that the first liquid crystal and the second liquid crystal in the reflective liquid crystal layer of the second liquid crystal element are in a focal conic state, a signal is provided to the first substrate and the second substrate of the third liquid crystal element, The first liquid crystal in the reflective liquid crystal layer of the third liquid crystal element is in a reflective state, the second liquid crystal is in a focal conic state, and the display device displays a second color; a signal is provided to the first substrate and the second substrate of the first liquid crystal element so that the first liquid crystal and the second liquid crystal in the reflective liquid crystal layer of the first liquid crystal element are in a focal conic state; a signal is provided to the first substrate and the second substrate of the second liquid crystal element so that the first liquid crystal in the reflective liquid crystal layer of the second liquid crystal element is in a focal conic state, and the second liquid crystal is in a reflective state; a signal is provided to the first substrate and the second substrate of the third liquid crystal element so that the first liquid crystal in the reflective liquid crystal layer of the third liquid crystal element is in a focal conic state, and the second liquid crystal is in a reflective state, and the display device displays a third color;Signals are provided to the first substrate and the second substrate of the first liquid crystal element so that the first liquid crystal and the second liquid crystal in the reflective liquid crystal layer of the first liquid crystal element are in a reflective state, signals are provided to the first substrate and the second substrate of the second liquid crystal element so that the first liquid crystal in the reflective liquid crystal layer of the second liquid crystal element is in a reflective state and the second liquid crystal is in a focal conic state, signals are provided to the first substrate and the second substrate of the third liquid crystal element so that the first liquid crystal in the reflective liquid crystal layer of the third liquid crystal element is in a reflective state and the second liquid crystal is in a focal conic state, and the display device displays a superimposed color of the first color and the second color; signals are provided to the first substrate and the second substrate of the first liquid crystal element so that the first liquid crystal in the reflective liquid crystal layer of the first liquid crystal element is in a reflective state and the second liquid crystal is in a focal conic state, signals are provided to the first substrate and the second substrate of the second liquid crystal element so that the first liquid crystal in the reflective liquid crystal layer of the second liquid crystal element is in a focal conic state and the second liquid crystal is in a reflective state, signals are provided to the first substrate and the second substrate of the third liquid crystal element so that the first liquid crystal in the reflective liquid crystal layer of the third liquid crystal element is in a focal conic state and the second liquid crystal is in a reflective state, and the display device displays a superimposed color of the first color and the second color providing a signal to the first substrate and the second substrate of the first liquid crystal element so that the first liquid crystal in the reflective liquid crystal layer of the first liquid crystal element is in a focal conic state and the second liquid crystal in a reflective state, providing a signal to the first substrate and the second substrate of the second liquid crystal element so that the first liquid crystal in the reflective liquid crystal layer of the second liquid crystal element is in a reflective state, providing a signal to the first substrate and the second substrate of the third liquid crystal element so that the first liquid crystal in the reflective liquid crystal layer of the third liquid crystal element is in a focal conic state and the second liquid crystal in a reflective state, and the display device displays a superimposed color of the second color and the third color; providing a signal to the first substrate and the second substrate of the first liquid crystal element so that the first liquid crystal and the second liquid crystal in the reflective liquid crystal layer of the first liquid crystal element are in a reflective state, providing a signal to the first substrate and the second substrate of the second liquid crystal element so that the first liquid crystal and the second liquid crystal in the reflective liquid crystal layer of the second liquid crystal element are in a reflective state, and providing a signal to the first substrate and the second substrate of the third liquid crystal element so that the first liquid crystal and the second liquid crystal in the reflective liquid crystal layer of the third liquid crystal element are in a reflective state, and the display device displays a superimposed color of the first, second and third colors.

[0283] The present disclosure also provides a display device. FIG23 is a side view of the display device provided by the present disclosure, and FIG24 is an enlarged view of the dotted box in FIG23. As shown in FIG23 and FIG24, the display device provided by the present disclosure may include: a display device 100.

[0284] The display device is the display device provided by any of the aforementioned embodiments, and the implementation principle and implementation effect are similar, which will not be repeated here.

[0285] In an exemplary embodiment, the display device may be a table sign or a house sign. Figures 23 and 24 are illustrative of the example of a table sign.

[0286] In an exemplary embodiment, as shown in Figures 23 and 24 , the display device further includes a bracket. The bracket may include a first connector 210, a second connector 220, and an adapter 230. The adapter 230 is connected to the first connector 210 and the second connector 220, respectively. The first connector 210 and the second connector 220 are arranged at an angle. The display device 100 is fixed to the first connector 210, and the first connector 210 is located on the backlight side of the display device 100.

[0287] In an exemplary embodiment, as shown in Figures 23 and 24, the distance G2 between the backlight side of the display device 100 and the first connector 210 ranges from 0.8 mm to 1.2 mm. For example, the distance G2 between the backlight side of the display device 100 and the first connector 210 can be 1 mm. A distance G2 between the backlight side of the display device 100 and the first connector 210 ranging from 0.8 mm to 1.2 mm can prevent mura caused by compression between the backlight side of the display device and the bracket.

[0288] G1 in FIG. 23 refers to the distance between the liquid crystal element layer 101 and the protective cover 102 in the display device.

[0289] In an exemplary embodiment, as shown in Figure 24, the display device may further include: a power supply device 240 and a driving device, the power supply device 240 and the driving device are arranged between the first connecting member 210 and the second connecting member 220, the power supply device 240 is electrically connected to the display device 100 and the driving device, respectively, and the driving device is electrically connected to the drivers in all liquid crystal elements in the display device 100.

[0290] In an exemplary embodiment, the display device may further include a power supply cover 250 , wherein the power supply cover 250 is configured to protect the power supply device 240 .

[0291] The drawings of the embodiments of the present disclosure only involve the structures involved in the embodiments of the present disclosure, and other structures may refer to general designs.

[0292] For the sake of clarity, the thickness and size of layers or microstructures are exaggerated in the drawings used to describe the embodiments of the present disclosure. It will be understood that when an element such as a layer, film, region, or substrate is referred to as being "on" or "under" another element, the element can be "directly on" or "under" the other element, or intervening elements may be present.

[0293] Although the embodiments disclosed in this disclosure are as described above, the contents described are merely embodiments adopted to facilitate understanding of the disclosure and are not intended to limit the disclosure. Any person skilled in the art to which the disclosure belongs may make any modifications and changes in the form and details of the implementation without departing from the spirit and scope of the disclosure. However, the scope of patent protection of the disclosure shall still be based on the scope defined by the attached claims.

Claims

1. A display device, comprising: A light absorbing layer and a liquid crystal element layer disposed on the light absorbing layer, the liquid crystal element layer comprising: at least two stacked liquid crystal elements, the liquid crystal element comprising: a first substrate, a reflective liquid crystal layer, and a second substrate, wherein the first substrate is located on a side of the reflective liquid crystal layer close to the light absorbing layer, and the second substrate is located on a side of the reflective liquid crystal layer away from the light absorbing layer; The working states of the reflective liquid crystal layer include: a reflective state and a focal conic state; When the reflective liquid crystal layer of one of the adjacent liquid crystal elements is in a reflective state, the light reflected by the liquid crystal element includes at least left-handed polarized light, and when the reflective liquid crystal layer of the other of the adjacent liquid crystal elements is in a reflective state, the light reflected by the liquid crystal element includes at least right-handed polarized light.

2. The display device according to claim 1, wherein: The first substrate comprises: a first base and a first electrode layer, the second substrate comprises: a second base and a second electrode layer, the first electrode layer is located on a side of the first substrate close to the reflective liquid crystal layer, the second electrode layer is located on a side of the second substrate close to the reflective liquid crystal layer, the first substrate comprises: a data signal line and a scan signal line; The data signal lines and the scanning signal lines intersect to define a plurality of sub-pixels, the first electrode layer comprises: first electrodes arranged in an array, the second electrode layer comprises: second electrodes, the reflective liquid crystal layer comprises: liquid crystal, the sub-pixels comprise the first electrode, the liquid crystal, and the second electrode, and the first electrode and the second electrode are transparent electrodes; An orthographic projection of the first electrode on the first substrate at least partially overlaps with an orthographic projection of the second electrode on the first substrate.

3. The display device according to claim 2, wherein: The wavelength L of the light reflected by the liquid crystal in the reflective liquid crystal layer and the distance P between the first electrode and the second electrode of the sub-pixel where the liquid crystal is located satisfy the formula: L=n*t*P, n is the average refractive index of the liquid crystal, and t is the ratio of the pitch of the liquid crystal to the distance between the first electrode and the second electrode of any sub-pixel in the liquid crystal element.

4. The display device according to claim 3, wherein: The liquid crystal element reflects light of one color, and the liquid crystal is one of a left-handed cholesteric liquid crystal or a right-handed cholesteric liquid crystal. When the liquid crystal element reflects left-handed polarized light, the liquid crystal is a left-handed cholesteric liquid crystal, and when the liquid crystal element reflects right-handed polarized light, the liquid crystal is a right-handed cholesteric liquid crystal; The liquid crystals of all sub-pixels are the same, the surface of the first substrate close to the reflective liquid crystal layer is flat, and the distances between the first electrodes and the second electrodes of any two sub-pixels in all sub-pixels are equal.

5. The display device according to claim 3, wherein: The liquid crystal element reflects two colors of light, the liquid crystal comprises: a first liquid crystal and a second liquid crystal, the first liquid crystal and the second liquid crystal are one of a left-handed cholesteric liquid crystal or a right-handed cholesteric liquid crystal, and the first liquid crystal and the second liquid crystal are configured to reflect light of different wavelengths; The sub-pixels in the liquid crystal element are arranged in an array along a first direction and a second direction, and the first direction and the second direction intersect each other; the liquid crystal of one of the two sub-pixels arranged along the first direction is a first liquid crystal, and the liquid crystal of the other of the two sub-pixels arranged along the first direction is a second liquid crystal, and the liquid crystal of one of the two sub-pixels arranged along the second direction is a first liquid crystal, and the liquid crystal of the other of the two sub-pixels arranged along the second direction is a second liquid crystal; The surface of the first substrate close to the reflective liquid crystal layer is uneven, and the distance between the first electrode and the second electrode of the sub-pixel where the first liquid crystal is located is not equal to the distance between the first electrode and the second electrode of the sub-pixel where the second liquid crystal is located; When the liquid crystal element reflects left-handed polarized light, the first liquid crystal and the second liquid crystal are left-handed cholesteric liquid crystals. When the liquid crystal element reflects right-handed polarized light, the first liquid crystal and the second liquid crystal are right-handed cholesteric liquid crystals. When the liquid crystal element reflects left-handed polarized light and right-handed polarized light, one of the first liquid crystal and the second liquid crystal is left-handed cholesteric liquid crystal, and the other of the first liquid crystal and the second liquid crystal is right-handed cholesteric liquid crystal.

6. The display device according to claim 4, wherein: The at least two liquid crystal elements include: a first liquid crystal element and a second liquid crystal element; When the reflective liquid crystal layer of the first liquid crystal element is in a reflective state, the first liquid crystal element reflects a first color light, and when the reflective liquid crystal layer of the second liquid crystal element is in a reflective state, the second liquid crystal element reflects a second color light.

7. The display device according to claim 6, wherein: The first color and the second color are different, and the superimposed color of the first color and the second color is white; When the wavelength of the first color is greater than that of the second color, the distance between the first electrode and the second electrode of any subpixel in the first liquid crystal element is greater than the distance between the first electrode and the second electrode of any subpixel in the second liquid crystal element.

8. The display device according to claim 7, wherein: The first color is red, the second color is cyan; The distance between the first electrode and the second electrode of any sub-pixel in the first liquid crystal element is in the range of 5.8 micrometers to 6.2 micrometers; The distance between the first electrode and the second electrode of any sub-pixel of any sub-pixel in the second liquid crystal element is in a range of 3.8 micrometers to 4.2 micrometers; Or, the first color is yellow and the second color is blue; The distance between the first electrode and the second electrode of any sub-pixel in the first liquid crystal element is in the range of 4.8 micrometers to 5.2 micrometers; The distance between the first electrode and the second electrode of any sub-pixel in the second liquid crystal element is in a range of 3.8 micrometers to 4.2 micrometers.

9. The display device according to claim 6, wherein: The first color and the second color are the same; A distance between a first electrode and a second electrode of any sub-pixel in the first liquid crystal element is the same as a distance between a first electrode and a second electrode of any sub-pixel in the second liquid crystal element.

10. The display device according to claim 6, wherein: The at least two liquid crystal elements further include: a third liquid crystal element; When the reflective liquid crystal layer of the third liquid crystal element is in a reflective state, the third liquid crystal element reflects light of a third color; The first color, the second color, and the third color are different colors, and a superimposed color of the first color, the second color, and the third color is white.

11. The display device according to claim 12, wherein: Any two of the distances between the first electrode and the second electrode of any subpixel in the first liquid crystal element, the distance between the first electrode and the second electrode of any subpixel in the second liquid crystal element, and the distance between the first electrode and the second electrode of any subpixel in the third liquid crystal element are different.

12. The display device according to claim 11, wherein: The first color is red, the second color is green, and the third color is blue; The distance between the first electrode and the second electrode of any sub-pixel in the first liquid crystal element is 5.8 micrometers to 6.2 microns; The distance between the first electrode and the second electrode of any sub-pixel in the second liquid crystal element is in a range of 4.8 micrometers to 5.2 micrometers; The distance between the first electrode and the second electrode of any sub-pixel in the third liquid crystal element ranges from 3.8 micrometers to 4.2 micrometers.

13. The display device according to claim 5, wherein: The at least two liquid crystal elements include: a first liquid crystal element and a second liquid crystal element; The first liquid crystal in the first liquid crystal element and the first liquid crystal in the second liquid crystal element are first color liquid crystals, and the second liquid crystal in the first liquid crystal element and the second liquid crystal in the second liquid crystal element are second color liquid crystals; The first liquid crystal and the second liquid crystal in the first liquid crystal element are left-handed cholesteric liquid crystals, and the first liquid crystal and the second liquid crystal in the second liquid crystal element are right-handed cholesteric liquid crystals, or the first liquid crystal and the second liquid crystal in the first liquid crystal element are right-handed cholesteric liquid crystals, and the first liquid crystal and the second liquid crystal in the second liquid crystal element are left-handed cholesteric liquid crystals, or the first liquid crystal in the first liquid crystal element is left-handed cholesteric liquid crystals, and the second liquid crystal in the first liquid crystal element is right-handed cholesteric liquid crystals, and the first liquid crystal in the second liquid crystal element is right-handed cholesteric liquid crystals, and the second liquid crystal in the second liquid crystal element is left-handed cholesteric liquid crystals, or the first liquid crystal in the first liquid crystal element is right-handed cholesteric liquid crystals, and the second liquid crystal in the first liquid crystal element is left-handed cholesteric liquid crystals, and the first liquid crystal in the second liquid crystal element is left-handed cholesteric liquid crystals, and the second liquid crystal in the second liquid crystal element is right-handed cholesteric liquid crystals; The first color liquid crystal and the second color liquid crystal are liquid crystals of different colors, and the superimposed color of the color of the light reflected by the first color liquid crystal and the color of the light reflected by the second color liquid crystal is white.

14. The display device according to claim 13, wherein: The distance between the first electrode and the second electrode of the sub-pixel where the first liquid crystal in the first liquid crystal element is located is the same as the distance between the first electrode and the second electrode of the sub-pixel where the first liquid crystal in the second liquid crystal element is located; A distance between the first electrode and the second electrode of a sub-pixel where the second liquid crystal in the first liquid crystal element is located is the same as a distance between the first electrode and the second electrode of a sub-pixel where the second liquid crystal in the second liquid crystal element is located.

15. The display device according to claim 13, wherein: When the first color liquid crystal and the second color liquid crystal are one of red cholesteric liquid crystal and cyan cholesteric liquid crystal, the distance between the first electrode and the second electrode of the sub-pixel where the liquid crystal reflecting red light is located is greater than the distance between the first electrode and the second electrode of the sub-pixel where the liquid crystal reflecting cyan light is located; When the first color liquid crystal and the second color liquid crystal are one of yellow cholesteric liquid crystal and blue cholesteric liquid crystal, the distance between the first electrode and the second electrode of the sub-pixel where the liquid crystal reflecting yellow light is located is greater than the distance between the first electrode and the second electrode of the sub-pixel where the liquid crystal reflecting blue light is located.

16. The display device according to claim 15, wherein: The orthographic projection of the sub-pixel including the first liquid crystal in the first liquid crystal element on the light absorption layer at least partially overlaps with the orthographic projection of the sub-pixel including the first liquid crystal in the second liquid crystal element on the light absorption layer, and has no overlapping area with the orthographic projection of the sub-pixel including the second liquid crystal in the second liquid crystal element on the light absorption layer; The orthographic projection of the sub-pixel of the second liquid crystal in the first liquid crystal element on the light absorbing layer at least partially overlaps with the orthographic projection of the sub-pixel of the second liquid crystal in the second liquid crystal element on the light absorbing layer, and there is no overlapping area with the orthographic projection of the sub-pixel of the first liquid crystal in the second liquid crystal element on the light absorbing layer.

17. The display device according to claim 5, wherein: The at least two liquid crystal elements include: a first liquid crystal element, a second liquid crystal element and a third liquid crystal element; The first liquid crystal in the first liquid crystal element and the first liquid crystal in the second liquid crystal element are first color liquid crystals, The second liquid crystal in the first liquid crystal element and the first liquid crystal in the third liquid crystal element are second color liquid crystals, and the second liquid crystal in the second liquid crystal element and the second liquid crystal in the third liquid crystal element are third color liquid crystals; One of the first liquid crystal in the first liquid crystal element and the first liquid crystal in the second liquid crystal element is a left-handed cholesteric liquid crystal, the other of the first liquid crystal in the first liquid crystal element and the first liquid crystal in the second liquid crystal element is a right-handed cholesteric liquid crystal, the second liquid crystal in the first liquid crystal element and one of the first liquid crystals in the third liquid crystal element are left-handed cholesteric liquid crystals, the second liquid crystal in the first liquid crystal element and one of the first liquid crystals in the third liquid crystal element are right-handed cholesteric liquid crystals, the second liquid crystal in the second liquid crystal element and one of the second liquid crystals in the third liquid crystal element are left-handed cholesteric liquid crystals, the second liquid crystal in the second liquid crystal element and the other of the second liquid crystals in the third liquid crystal element are right-handed cholesteric liquid crystals, the first liquid crystal and the second liquid crystal in the first liquid crystal element are left-handed cholesteric liquid crystals or right-handed cholesteric liquid crystals, one of the first liquid crystal and the second liquid crystal in the second liquid crystal element is a left-handed cholesteric liquid crystal, the other of the first liquid crystal and the second liquid crystal in the second liquid crystal element is a right-handed cholesteric liquid crystal, and the first liquid crystal and the second liquid crystal in the third liquid crystal element are left-handed cholesteric liquid crystals or right-handed cholesteric liquid crystals; The first color liquid crystal, the second color liquid crystal and the third color liquid crystal are liquid crystals of different colors, and the superimposed color of the light reflected by the first color liquid crystal, the light reflected by the second color liquid crystal and the light reflected by the third color liquid crystal is white.

18. The display device according to claim 17, wherein: The distance between the first electrode and the second electrode of the sub-pixel where the first liquid crystal in the first liquid crystal element is located is the same as the distance between the first electrode and the second electrode of the sub-pixel where the first liquid crystal in the second liquid crystal element is located; The distance between the first electrode and the second electrode of the sub-pixel where the second liquid crystal in the first liquid crystal element is located is the same as the distance between the first electrode and the second electrode of the sub-pixel where the first liquid crystal in the third liquid crystal element is located; The distance between the first electrode and the second electrode of the sub-pixel where the second liquid crystal in the second liquid crystal element is located is the same as the distance between the first electrode and the second electrode of the sub-pixel where the second liquid crystal in the third liquid crystal element is located.

19. The display device according to claim 17 or 18, wherein: The first color liquid crystal, the second color liquid crystal and the third color liquid crystal are one of red cholesteric liquid crystal, green cholesteric liquid crystal and blue cholesteric liquid crystal; The distance between the first electrode and the second electrode of the sub-pixel where the red cholesteric liquid crystal is located is greater than the distance between the first electrode and the second electrode of the sub-pixel where the green cholesteric liquid crystal is located, and the distance between the first electrode and the second electrode of the sub-pixel where the green cholesteric liquid crystal is located is greater than the distance between the first electrode and the second electrode of the sub-pixel where the blue cholesteric liquid crystal is located.

20. The display device according to claim 19, wherein The distance between the first electrode and the second electrode of the sub-pixel where the red cholesteric liquid crystal is located ranges from 5.8 micrometers to 6.2 micrometers; The distance between the first electrode and the second electrode of the sub-pixel where the green cholesteric liquid crystal is located ranges from 4.8 micrometers to 5.2 micrometers; The distance between the first electrode and the second electrode of the sub-pixel where the blue cholesteric liquid crystal is located ranges from 3.8 micrometers to 4.2 micrometers.

21. The display device according to claims 13 and 17, wherein: The liquid crystal element further comprises: an isolation structure and a sealant disposed between the first substrate and the second substrate, and the reflective liquid crystal layer is filled in a region enclosed by the sealant, the first substrate and the second substrate; The isolation structure divides the area enclosed by the frame sealant, the first substrate and the second substrate into a first area and a second area, the first area and the second area are independent of each other, the frame sealant is provided with a first crystal filling port and a second crystal filling port, the first crystal filling port is configured to fill the first liquid crystal into one of the first area and the second area, the second crystal filling port is configured to fill the second liquid crystal into the other of the first area and the second area, the first area The liquid crystals in the first region are interconnected, and the liquid crystals in the second region are interconnected.

22. The display device according to claim 21, wherein: The isolation structure comprises: a first connection portion, a second connection portion, N third connection portions and N-1 fourth connection portions, where N is a positive integer greater than or equal to 2; The first connection portion, the second connection portion and the fourth connection portion extend along a first direction, the third connection portion extends along a second direction, and the first direction and the second direction intersect; One end of the first connection portion is connected to the middle of the first inner wall of the frame sealant, the other end of the first connection portion is connected to the middle of the first third connection portion, one end of the first third connection portion is connected to one end of the first fourth connection portion, the other end of the first fourth connection portion is connected to one end of the second third connection portion, the other end of the i-th third connection portion is connected to one end of the i-th fourth connection portion, the other end of the i-th fourth connection portion is connected to one end of the i+1-th third connection portion, one end of the second connection portion is connected to the middle of the second inner wall of the frame sealant, and the other end of the second connection portion is connected to the middle of the N-th third connection portion; the first inner wall and the second inner wall are arranged opposite to each other, 2≤i≤N-1; A length of the third connection portion along the second direction is greater than a length of any one of the first connection portion, the second connection portion, and the fourth connection portion along the first direction.

23. The display device according to claim 1, further comprising: Protective cover; The protection cover is located on a side of the liquid crystal element layer away from the light absorbing layer.

24. The display device according to claim 23, wherein: The distance between the protective cover and the liquid crystal element layer ranges from 1 mm to 1.5 mm; The haze of the protective cover sheet ranges from 10% to 15%.

25. The display device according to claim 3 or 4, wherein: The liquid crystal of the reflective liquid crystal layer reflecting left-handedly deflected light in the reflective state is doped with a left-handed chiral agent, and the liquid crystal of the reflective liquid crystal layer reflecting right-handedly deflected light in the reflective state is doped with a right-handed chiral agent.

26. The display device according to claim 2, wherein: The reflective liquid crystal layer further includes: an acrylic polymer, wherein the content of the acrylic polymer ranges from 3% to 5%.

27. The display device according to claim 2, wherein: The second substrate comprises: a black matrix layer, wherein an orthographic projection of the black matrix layer on the first substrate at least partially overlaps with an orthographic projection of the data signal line and the scan signal line on the first substrate; The black matrix layer comprises: a first black matrix structure and a second black matrix structure, wherein an orthographic projection of the first black matrix structure on the light absorbing layer at least partially overlaps with an orthographic projection of the data signal line on the light absorbing layer, and an orthographic projection of the second black matrix structure on the light absorbing layer at least partially overlaps with an orthographic projection of the scan signal line on the light absorbing layer; A distance between an orthographic projection of the first black matrix structure on the light absorption layer and an orthographic projection of a first electrode of any one of two adjacent sub-pixels located on both sides of the data signal line on the light absorption layer is a first distance, and a distance between an orthographic projection of the second black matrix structure on the light absorption layer and an orthographic projection of a first electrode of any one of two adjacent sub-pixels located on both sides of the scan signal line on the light absorption layer is a second distance, and the first distance is greater than the second distance; The distance between the orthographic projection of the boundary of one of the two adjacent sub-pixels located on both sides of the data signal line close to the data signal line on the light absorption layer and the orthographic projection of the boundary of the other sub-pixel located on both sides of the data signal line close to the first black matrix structure on the light absorption layer is greater than the alignment deviation of the adjacent liquid crystal elements; The orthographic projection of the boundary of one of the two sub-pixels adjacent to the scanning signal line on both sides of the scanning signal line on the light absorption layer is the same as the boundary of the second black matrix structure adjacent to the two sub-pixels adjacent to the scanning signal line on both sides of the scanning signal line. The distance between the orthographic projections of the boundaries of another sub-pixel of the sub-pixel on the light absorbing layer is greater than the alignment deviation of adjacent liquid crystal elements.

28. The display device according to claim 1, wherein: The alignment deviation between adjacent liquid crystal elements is less than or equal to 5 microns.

29. The display device according to claim 1, wherein: The liquid crystal element further includes: a driver; The driver is disposed on the first substrate, and the driver is configured to provide signals to the first substrate and the second substrate so that the reflective liquid crystal layer switches between a focal conic state and a reflective state; There is no overlapping area between the orthographic projection of the second substrate on the first base and the orthographic projection of the driver on the first base.

30. A display device comprising: A display device as claimed in any one of claims 1 to 29.

31. A method for driving a display device, configured to drive the display device according to any one of claims 1 to 30, the method comprising: Signals are provided to the first substrate and the second substrate of at least two liquid crystal elements so that the reflective liquid crystal layers of the at least two liquid crystal elements are switched between a focal conic state and a reflective state.

32. The method according to claim 31, wherein: The at least two liquid crystal elements include: a first liquid crystal element and a second liquid crystal element, the first liquid crystal element reflects a first color light, the second liquid crystal element reflects a second color light, and the first color and the second color are different; The providing signals to the first substrate and the second substrate of at least two liquid crystal elements so that the reflective liquid crystal layers of the at least two liquid crystal elements switch between the focal conic state and the reflective state comprises: Provide signals to the first substrate and the second substrate of the first liquid crystal element so that the reflective liquid crystal layer of the first liquid crystal element is in a focal conic state, provide signals to the first substrate and the second substrate of the second liquid crystal element so that the reflective liquid crystal layer of the second liquid crystal element is in a focal conic state, and the display device displays black; Provide signals to the first substrate and the second substrate of the first liquid crystal element so that the reflective liquid crystal layer of the first liquid crystal element is in a reflective state, provide signals to the first substrate and the second substrate of the second liquid crystal element so that the reflective liquid crystal layer of the second liquid crystal element is in a focal conic state, and the display device displays a first color; Provide a signal to the first substrate and the second substrate of the first liquid crystal element so that the reflective liquid crystal layer of the first liquid crystal element is in a focal conic state, provide a signal to the first substrate and the second substrate of the second liquid crystal element so that the reflective liquid crystal layer of the second liquid crystal element is in a reflective state, and the display device displays a second color; Signals are provided to the first substrate and the second substrate of the first liquid crystal element so that the reflective liquid crystal layer of the first liquid crystal element is in a reflective state, and signals are provided to the first substrate and the second substrate of the second liquid crystal element so that the reflective liquid crystal layer of the second liquid crystal element is in a reflective state, and the display device displays a superimposed color of the first color and the second color.

33. The method according to claim 31, wherein: The at least two liquid crystal elements include: a first liquid crystal element, a second liquid crystal element and a third liquid crystal element, the first liquid crystal element reflects a first color light, the second liquid crystal element reflects a second color light, the third liquid crystal element reflects a third color light, and any two of the first color, the second color and the third color are different; The providing signals to the first substrate and the second substrate of at least two liquid crystal elements so that the reflective liquid crystal layers of the at least two liquid crystal elements switch between the focal conic state and the reflective state comprises: A signal is provided to the first substrate and the second substrate of the first liquid crystal element so that the reflective liquid crystal layer of the first liquid crystal element is in a focal conic state, a signal is provided to the first substrate and the second substrate of the second liquid crystal element so that the reflective liquid crystal layer of the second liquid crystal element is in a focal conic state, and a signal is provided to the first substrate and the second substrate of the third liquid crystal element so that the reflective liquid crystal layer of the third liquid crystal element is in a focal conic state. The reflective liquid crystal layer is in a focal conic state, and the display device displays black; Provide a signal to the first substrate and the second substrate of the first liquid crystal element so that the reflective liquid crystal layer of the first liquid crystal element is in a reflective state, provide a signal to the first substrate and the second substrate of the second liquid crystal element so that the reflective liquid crystal layer of the second liquid crystal element is in a focal conic state, provide a signal to the first substrate and the second substrate of the third liquid crystal element so that the reflective liquid crystal layer of the third liquid crystal element is in a focal conic state, and the display device displays a first color; providing a signal to the first substrate and the second substrate of the first liquid crystal element so that the reflective liquid crystal layer of the first liquid crystal element is in a focal conic state, providing a signal to the first substrate and the second substrate of the second liquid crystal element so that the reflective liquid crystal layer of the second liquid crystal element is in a reflective state, providing a signal to the first substrate and the second substrate of the third liquid crystal element so that the reflective liquid crystal layer of the third liquid crystal element is in a focal conic state, and the display device displays a second color; providing a signal to the first substrate and the second substrate of the first liquid crystal element so that the reflective liquid crystal layer of the first liquid crystal element is in a focal conic state, providing a signal to the first substrate and the second substrate of the second liquid crystal element so that the reflective liquid crystal layer of the second liquid crystal element is in a focal conic state, providing a signal to the first substrate and the second substrate of the third liquid crystal element so that the reflective liquid crystal layer of the third liquid crystal element is in a reflective state, and the display device displays a third color; A signal is provided to the first substrate and the second substrate of the first liquid crystal element so that the reflective liquid crystal layer of the first liquid crystal element is in a reflective state, a signal is provided to the first substrate and the second substrate of the second liquid crystal element so that the reflective liquid crystal layer of the second liquid crystal element is in a reflective state, and a signal is provided to the first substrate and the second substrate of the third liquid crystal element so that the reflective liquid crystal layer of the third liquid crystal element is in a focal conic state, and the display device displays a superimposed color of the first color and the second color; A signal is provided to the first substrate and the second substrate of the first liquid crystal element so that the reflective liquid crystal layer of the first liquid crystal element is in a reflective state, a signal is provided to the first substrate and the second substrate of the second liquid crystal element so that the reflective liquid crystal layer of the second liquid crystal element is in a focal conic state, and a signal is provided to the first substrate and the second substrate of the third liquid crystal element so that the reflective liquid crystal layer of the third liquid crystal element is in a reflective state, and the display device displays a superimposed color of the first color and the third color; Provide a signal to the first substrate and the second substrate of the first liquid crystal element so that the reflective liquid crystal layer of the first liquid crystal element is in a focal conic state, provide a signal to the first substrate and the second substrate of the second liquid crystal element so that the reflective liquid crystal layer of the second liquid crystal element is in a reflective state, provide a signal to the first substrate and the second substrate of the third liquid crystal element so that the reflective liquid crystal layer of the third liquid crystal element is in a reflective state, and the display device displays a superimposed color of the second color and the third color; A signal is provided to the first substrate and the second substrate of the first liquid crystal element so that the reflective liquid crystal layer of the first liquid crystal element is in a reflective state, a signal is provided to the first substrate and the second substrate of the second liquid crystal element so that the reflective liquid crystal layer of the second liquid crystal element is in a reflective state, a signal is provided to the first substrate and the second substrate of the third liquid crystal element so that the reflective liquid crystal layer of the third liquid crystal element is in a reflective state, and the display device displays a superimposed color of the first color, the second color and the third color.

34. The method of claim 31, wherein: The at least two liquid crystal elements include: a first liquid crystal element and a second liquid crystal element, the first liquid crystal in the first liquid crystal element and the first liquid crystal in the second liquid crystal element are first color liquid crystals, the second liquid crystal in the first liquid crystal element and the second liquid crystal in the second liquid crystal element are second color liquid crystals, and the first color liquid crystal and the second color liquid crystal are different color liquid crystals; The providing signals to the first substrate and the second substrate of at least two liquid crystal elements so that the reflective liquid crystal layers of the at least two liquid crystal elements switch between the focal conic state and the reflective state comprises: Supplying signals to the first substrate and the second substrate of the first liquid crystal element so that the first liquid crystal and the second liquid crystal in the reflective liquid crystal layer of the first liquid crystal element are in a focal conic state, and supplying signals to the first substrate and the second substrate of the second liquid crystal element so that the first liquid crystal and the second liquid crystal in the reflective liquid crystal layer of the second liquid crystal element are in a focal conic state, and the display device displays black; providing signals to the first substrate and the second substrate of the first liquid crystal element so that the first liquid crystal in the reflective liquid crystal layer of the first liquid crystal element is in a reflective state and the second liquid crystal is in a focal conic state, providing signals to the first substrate and the second substrate of the second liquid crystal element so that the first liquid crystal in the reflective liquid crystal layer of the second liquid crystal element is in a reflective state and the second liquid crystal is in a focal conic state, The display device displays a first color; providing signals to the first substrate and the second substrate of the first liquid crystal element so that the first liquid crystal in the reflective liquid crystal layer of the first liquid crystal element is in a focal conic state and the second liquid crystal is in a reflective state, providing signals to the first substrate and the second substrate of the second liquid crystal element so that the first liquid crystal in the reflective liquid crystal layer of the second liquid crystal element is in a focal conic state and the second liquid crystal is in a reflective state, and the display device displays a second color; A signal is provided to the first substrate and the second substrate of the first liquid crystal element so that the first liquid crystal and the second liquid crystal in the reflective liquid crystal layer of the first liquid crystal element are in a reflective state. A signal is provided to the first substrate and the second substrate of the second liquid crystal element so that the first liquid crystal and the second liquid crystal in the reflective liquid crystal layer of the second liquid crystal element are in a reflective state, and the display device displays a superimposed color of the first color and the second color.

35. The method of claim 31, wherein: The at least two liquid crystal elements include: a first liquid crystal element, a second liquid crystal element, and a third liquid crystal element, wherein the first liquid crystal in the first liquid crystal element and the first liquid crystal in the second liquid crystal element are first color liquid crystals, the second liquid crystal in the first liquid crystal element and the first liquid crystal in the third liquid crystal element are second color liquid crystals, and the second liquid crystal in the second liquid crystal element and the second liquid crystal in the third liquid crystal element are third color liquid crystals; The providing signals to the first substrate and the second substrate of at least two liquid crystal elements so that the reflective liquid crystal layers of the at least two liquid crystal elements switch between the focal conic state and the reflective state comprises: providing signals to the first substrate and the second substrate of the first liquid crystal element so that the first liquid crystal and the second liquid crystal in the reflective liquid crystal layer of the first liquid crystal element are in a focal conic state, providing signals to the first substrate and the second substrate of the second liquid crystal element so that the first liquid crystal and the second liquid crystal in the reflective liquid crystal layer of the second liquid crystal element are in a focal conic state, providing signals to the first substrate and the second substrate of the third liquid crystal element so that the first liquid crystal and the second liquid crystal in the reflective liquid crystal layer of the third liquid crystal element are in a focal conic state, and the display device displays black; providing signals to the first substrate and the second substrate of the first liquid crystal element so that the first liquid crystal in the reflective liquid crystal layer of the first liquid crystal element is in a reflective state and the second liquid crystal is in a focal conic state, providing signals to the first substrate and the second substrate of the second liquid crystal element so that the first liquid crystal in the reflective liquid crystal layer of the second liquid crystal element is in a reflective state and the second liquid crystal is in a focal conic state, providing signals to the first substrate and the second substrate of the third liquid crystal element so that the first liquid crystal and the second liquid crystal in the reflective liquid crystal layer of the third liquid crystal element are in a focal conic state, and the display device displays a first color; providing signals to the first substrate and the second substrate of the first liquid crystal element so that the first liquid crystal in the reflective liquid crystal layer of the first liquid crystal element is in a focal conic state and the second liquid crystal is in a reflective state, providing signals to the first substrate and the second substrate of the second liquid crystal element so that the first liquid crystal and the second liquid crystal in the reflective liquid crystal layer of the second liquid crystal element are in a focal conic state, providing signals to the first substrate and the second substrate of the third liquid crystal element so that the first liquid crystal in the reflective liquid crystal layer of the third liquid crystal element is in a reflective state and the second liquid crystal is in a focal conic state, and the display device displays a second color; providing signals to the first substrate and the second substrate of the first liquid crystal element so that the first liquid crystal and the second liquid crystal in the reflective liquid crystal layer of the first liquid crystal element are in a focal conic state, providing signals to the first substrate and the second substrate of the second liquid crystal element so that the first liquid crystal in the reflective liquid crystal layer of the second liquid crystal element is in a focal conic state and the second liquid crystal is in a reflective state, providing signals to the first substrate and the second substrate of the third liquid crystal element so that the first liquid crystal in the reflective liquid crystal layer of the third liquid crystal element is in a focal conic state and the second liquid crystal is in a reflective state, and the display device displays a third color; Provide signals to the first substrate and the second substrate of the first liquid crystal element so that the first liquid crystal and the second liquid crystal in the reflective liquid crystal layer of the first liquid crystal element are in a reflective state, provide signals to the first substrate and the second substrate of the second liquid crystal element so that the first liquid crystal in the reflective liquid crystal layer of the second liquid crystal element is in a reflective state and the second liquid crystal is in a focal conic state, provide signals to the first substrate and the second substrate of the third liquid crystal element so that the first liquid crystal in the reflective liquid crystal layer of the third liquid crystal element is in a reflective state and the second liquid crystal is in a focal conic state, and the display device displays a superimposed color of the first color and the second color; A signal is provided to the first substrate and the second substrate of the first liquid crystal element so that the reflective liquid crystal layer of the first liquid crystal element The first liquid crystal is in a reflective state, and the second liquid crystal is in a focal conic state, a signal is provided to the first substrate and the second substrate of the second liquid crystal element, so that the first liquid crystal in the reflective liquid crystal layer of the second liquid crystal element is in a focal conic state, and the second liquid crystal is in a reflective state, a signal is provided to the first substrate and the second substrate of the third liquid crystal element, so that the first liquid crystal in the reflective liquid crystal layer of the third liquid crystal element is in a focal conic state, and the second liquid crystal is in a reflective state, and the display device displays a superimposed color of the first color and the third color; providing signals to the first substrate and the second substrate of the first liquid crystal element so that the first liquid crystal in the reflective liquid crystal layer of the first liquid crystal element is in a focal conic state and the second liquid crystal is in a reflective state, providing signals to the first substrate and the second substrate of the second liquid crystal element so that the first liquid crystal in the reflective liquid crystal layer of the second liquid crystal element is in a reflective state, providing signals to the first substrate and the second substrate of the third liquid crystal element so that the first liquid crystal in the reflective liquid crystal layer of the third liquid crystal element is in a focal conic state and the second liquid crystal is in a reflective state, and the display device displays a superimposed color of the second color and the third color; A signal is provided to the first substrate and the second substrate of the first liquid crystal element so that the first liquid crystal and the second liquid crystal in the reflective liquid crystal layer of the first liquid crystal element are in a reflective state, a signal is provided to the first substrate and the second substrate of the second liquid crystal element so that the first liquid crystal and the second liquid crystal in the reflective liquid crystal layer of the second liquid crystal element are in a reflective state, a signal is provided to the first substrate and the second substrate of the third liquid crystal element so that the first liquid crystal and the second liquid crystal in the reflective liquid crystal layer of the third liquid crystal element are in a reflective state, and the display device displays a superimposed color of the first color, the second color and the third color.

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