CN111413833A

CN111413833A - Display device and manufacturing method thereof

Info

Publication number: CN111413833A
Application number: CN202010338795.2A
Authority: CN
Inventors: 陈兴武
Original assignee: TCL China Star Optoelectronics Technology Co Ltd
Current assignee: TCL China Star Optoelectronics Technology Co Ltd
Priority date: 2020-04-26
Filing date: 2020-04-26
Publication date: 2020-07-14
Anticipated expiration: 2040-04-26
Also published as: CN111413833B

Abstract

The application discloses display device and preparation method thereof, display device includes display panel and attached in the adjusting panel of display panel one side, and the adjusting panel includes: the display device comprises a first substrate, a second substrate and a third substrate, wherein a plurality of strip-shaped first electrodes arranged along a first direction are arranged on the first substrate; the second substrate is opposite to one side of the first substrate, which is provided with the plurality of first electrodes, a second electrode layer and a light alignment layer are sequentially arranged on one side of the second substrate, which faces the first substrate, and the light alignment layer has a pre-tilt angle inclining along a second direction, wherein the projections of the first direction and the second direction on the first substrate are mutually vertical; and a liquid crystal layer disposed between the first substrate and the second substrate; the display device with high contrast, high penetration rate and quick response can be obtained, and flexible switching between 2D display and 3D display can be realized.

Description

Display device and manufacturing method thereof

Technical Field

The present disclosure relates to display technologies, and particularly to a display device and a manufacturing method thereof.

Background

With the rapid development of display technology, liquid crystal display has become the most widespread display technology at present, and people have higher and higher requirements on display technology, and 3D display devices have been developed accordingly.

Currently, 3D display devices may be classified into glasses type and naked eye type 3D display technologies. Naked eye 3D does not need to use 3D glasses, but the viewing angle and the optimal viewing area are small, the display effect is not ideal, and the method is not popularized. Glasses type 3D display can be divided into a color difference type, a polarization type and an active shutter type, that is, different pictures can be seen by left and right eyes by matching a film source through a color separation method, a light separation method and a time separation method, thereby realizing a 3D effect, wherein the polarization type is most popular.

However, in the current 3D display device, it is difficult to obtain a 3D display device having high contrast, high transmittance, and fast response at the same time due to technical limitations.

Disclosure of Invention

The embodiment of the application provides a display device and a manufacturing method thereof, and the technical problem that a 3D display device in the prior art is difficult to simultaneously meet display contrast, penetration rate and response speed, and further influences display effect is solved.

In order to solve the above technical problem, an embodiment of the present application provides a display device, the display device includes a display panel and an adjustment panel attached to one side of the display panel, and the adjustment panel includes:

the display device comprises a first substrate, a second substrate and a third substrate, wherein a plurality of strip-shaped first electrodes arranged along a first direction are arranged on the first substrate;

the second substrate is opposite to one side of the first substrate, which is provided with the plurality of first electrodes, a second electrode layer and a light alignment layer are sequentially arranged on one side of the second substrate, which faces the first substrate, and the light alignment layer has a pre-tilt angle inclining along a second direction, wherein the projections of the first direction and the second direction on the first substrate are mutually vertical; and

and the liquid crystal layer is arranged between the first substrate and the second substrate.

In one embodiment of the present application, the liquid crystal in the liquid crystal layer includes a dielectric negative liquid crystal, and the pitch of the liquid crystal is between 5um and 120 um.

In one embodiment of the present application, the liquid crystal layer further includes a chiral agent, and the content of the chiral agent is 0.005-30%.

In one embodiment of the present application, the adjustment panel further includes a first steering layer disposed on the first substrate, wherein the first steering layer includes a plurality of first polymer particles inclined in the first direction, and a second steering layer disposed on the second substrate, wherein the second steering layer includes a plurality of second polymer particles inclined in the second direction.

In an embodiment of the present application, a first polarizer is disposed on one side of the display panel facing the adjusting panel, one side of the adjusting panel facing the display panel is disposed on one side of the first substrate, and a polarization direction of the first polarizer is parallel to the first direction.

In an embodiment of the present application, a first polarizer is disposed on one side of the display panel facing the adjusting panel, one side of the adjusting panel, which is provided with the first substrate, faces away from the display panel, and a polarization direction of the first polarizer is perpendicular to the first direction.

In an embodiment of the present application, the display device further includes an auxiliary device, the auxiliary device includes a second polarizer and a third polarizer, a polarization direction of the second polarizer is perpendicular to a polarization direction of the third polarizer, and the polarization direction of the second polarizer is along the first direction or the second direction.

According to the above object of the present application, there is provided a method of manufacturing a display device, the method comprising:

s10, forming a plurality of first electrodes arranged in a first direction on the first substrate;

s20, sequentially forming a second electrode layer and a photo-alignment layer on the second substrate, wherein the photo-alignment layer has a pre-tilt angle tilted along a second direction, and the projections of the first direction and the second direction on the first substrate are perpendicular to each other;

s30, combining the first substrate with the first electrodes and the second substrate with the optical alignment layer, and injecting a liquid crystal layer to form a regulation panel; and

and S40, preparing a display panel and attaching the display panel to the adjusting panel.

In one embodiment of the present application, in the step S30, the liquid crystal layer includes a dielectric negative liquid crystal, a chiral agent, and a polymer monomer.

In an embodiment of the present application, the step S30 further includes:

s301, applying a voltage to the plurality of first electrodes and the second electrode layer to deflect liquid crystal in the liquid crystal layer, and irradiating the liquid crystal layer with ultraviolet light; and

s302, stopping applying the voltage to the plurality of first electrodes and the second electrode layer, and irradiating the liquid crystal layer with ultraviolet light, so that the polymer monomer forms a first direction control layer on the first substrate and a second direction control layer on the second substrate, where the first direction control layer includes a plurality of first polymer particles inclined along the first direction, and the second direction control layer includes a plurality of second polymer particles inclined along the second direction.

The beneficial effect of this application: this application sets up first electrode and photoalignment layer simultaneously on relative base plate in the regulation panel, and the direction of arrangement of first electrode is mutually perpendicular with the direction of alignment on photoalignment layer, so that the liquid crystal molecule of upper and lower base plate rotates pi/2 or 3 pi/2, can make local region light polarization direction selection be pi/2 under the regulation panel open mode promptly, thereby realize double screen control, realize 2 kinds of pictures of polarization direction mutually perpendicular, in order to obtain the display device who has high contrast, high penetration rate and quick response, collocation auxiliary device is in order to realize the 3D and shows.

Drawings

The technical solution and other advantages of the present application will become apparent from the detailed description of the embodiments of the present application with reference to the accompanying drawings.

Fig. 1A is a schematic view of a conditioning panel process structure according to an embodiment of the present disclosure.

Fig. 1B is a schematic view of a conditioning panel manufacturing process structure according to an embodiment of the present application.

Fig. 1C is a schematic view of a conditioning panel process structure according to an embodiment of the present disclosure.

Fig. 2 is a schematic view of a process structure of an alignment layer according to an embodiment of the present disclosure.

Fig. 3 is a schematic view of a first electrode arrangement structure provided in an embodiment of the present application.

Fig. 4 is a schematic view of a liquid crystal rotation structure provided in the embodiment of the present application.

Fig. 5 is a schematic structural diagram of a display device according to an embodiment of the present application.

Fig. 6A is a schematic view of a display process of a display panel according to an embodiment of the present disclosure.

Fig. 6B is a schematic view of another display panel display process provided in the embodiment of the present application.

Fig. 7 is a flowchart of a method for manufacturing a display device according to an embodiment of the present application.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. It is to be understood that the embodiments described are only a few embodiments of the present application and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

In the description of the present application, it is to be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present application and for simplicity in description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed in a particular orientation, and be operated in a particular manner, and are not to be construed as limiting the present application. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", may explicitly or implicitly include one or more of the described features. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.

In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; may be mechanically connected, may be electrically connected or may be in communication with each other; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

In this application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact of the first and second features, or may comprise contact of the first and second features not directly but through another feature in between. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

The following disclosure provides many different embodiments or examples for implementing different features of the application. In order to simplify the disclosure of the present application, specific example components and arrangements are described below. Of course, they are merely examples and are not intended to limit the present application. Moreover, the present application may repeat reference numerals and/or letters in the various examples, such repetition is for the purpose of simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or configurations discussed. In addition, examples of various specific processes and materials are provided herein, but one of ordinary skill in the art may recognize applications of other processes and/or use of other materials.

The embodiment of the application provides a display device which has high contrast, high penetration rate and quick response and can flexibly switch between 2D display and 3D display.

An embodiment of the present application provides a display device, please refer to fig. 1C and fig. 5, the display device includes a display panel 20 and an adjusting panel 10 attached to one side of the display panel 20, and the adjusting panel 10 includes: a first substrate 101, wherein a plurality of strip-shaped first electrodes 103 arranged along a first direction are arranged on the first substrate 101; a second substrate 102 opposite to the first substrate 101 on which the plurality of first electrodes 103 are disposed, wherein a second electrode layer 104 and a photo-alignment layer 105 are sequentially disposed on a side of the second substrate 102 facing the first substrate 101, and the photo-alignment layer 105 has a pre-tilt angle tilted in a second direction, wherein projections of the first direction and the second direction on the first substrate 101 are perpendicular to each other; and a liquid crystal layer 106 disposed between the first substrate 101 and the second substrate 102.

In the implementation and application process, the existing display device comprises a PSVA mode (polymer stabilized vertical alignment liquid crystal mode), has better viewing angle and contrast ratio compared with other modes, but the transmittance is poor, a 3D display device with the viewing angle, the contrast and the transmittance taken into account cannot be obtained, the embodiments of the present application provide a display device, which is provided with a modulation panel, and a photo-alignment layer and a corresponding first electrode, so that the liquid crystal at the upper and lower substrates can rotate exactly pi/2 or 3 pi/2, namely, the light polarization direction of the local area can be selected to be pi/2 when the panel is in the open state, therefore, double-screen control is realized, 2 pictures with mutually vertical polarization directions are realized, a display device with high contrast, high penetration rate and quick response is obtained, and polarized glasses are matched to realize 3D display.

Specifically, referring to fig. 1C and fig. 5, the display device includes a display panel 20 and an adjusting panel 10 attached to one side of the display panel 20, and the adjusting panel 10 and the display panel 20 can be attached by an adhesive layer 112, and the adhesive layer 112 can be a material such as an optical adhesive.

The adjusting panel 10 includes a first substrate 101 and a second substrate 102 disposed opposite to each other, please refer to fig. 3, a plurality of strip-shaped first electrodes 103 arranged along a first direction are disposed on a side of the first substrate 101 facing the second substrate 102, a second electrode layer 104 and a photo-alignment layer 105 are sequentially disposed on a side of the second substrate 102 facing the first substrate 101, and the photo-alignment layer 105 has a pre-tilt angle tilted along a second direction, wherein projections of the first direction and the second direction on the first substrate 101 are perpendicular to each other, and please refer to fig. 2, the photo-alignment layer 105 provided in the embodiment of the present application is a photo-alignment material, and a pre-tilt angle tilted along the second direction can be formed by ultraviolet irradiation, the pre-tilt angle can be between 0.1 to 5 degrees, and the embodiment of the present application can avoid generating a foreign substance when preparing the alignment layer by using photo-alignment, thereby preventing the photo-alignment layer 105 from being contaminated and improving the quality of the display device.

First base plate 101 with be provided with liquid crystal layer 106 between second base plate 102, just liquid crystal in liquid crystal layer 106 includes the negative liquid crystal of dielectric, just the effective optical path difference of liquid crystal is between 300nm to 550nm, the pitch of liquid crystal is between 5um ~ 120um, the box thickness of liquid crystal layer 106 can be between 2.5 to 10um, it is required to explain that, still include the chiral agent in the liquid crystal layer 106, just the content of chiral agent is 0.005 ~ 30%, so that liquid crystal in the liquid crystal layer 106 can have higher distortion angle and form required pitch.

In the embodiment, the adjustment panel 10 further includes a first direction control layer 1071 disposed on a side of the first substrate 101 facing the second substrate 102, and a second direction control layer 1072 disposed on a side of the second substrate 102 facing the first substrate 101, wherein the first direction control layer 1071 includes a plurality of first polymer particles inclined in the first direction, and the second direction control layer 1072 includes a plurality of second polymer particles inclined in the second direction, so that the liquid crystal in the liquid crystal layer 106 can be better rotated in a predetermined direction under the application of a voltage.

It should be noted that the first substrate 101 further includes a transistor array layer to control the liquid crystal in the liquid crystal layer 106 to locally deflect, the second substrate 102 may further include a black matrix layer to prevent light leakage from the panel, the liquid crystal layer 106 may further include a spacer to keep the liquid crystal layer 106 at a uniform cell thickness, and neither the first substrate 101 nor the second substrate 102 is limited to a flexible substrate or a common substrate.

The display panel 20 includes a display layer 108, and a first polarizer 109 and a fourth polarizer 110 attached to and disposed on both sides of the display layer 108, the display layer 108 is disposed on one side of the first polarizer 109 facing the adjusting panel 10, and is attached to the adjusting panel 10, and a backlight layer 111 is disposed on one side of the display layer 108 on which the second polarizer 110 is disposed to provide a light source to the display layer.

The display device may further include an auxiliary device, and the auxiliary device includes a second polarizer and a third polarizer, and the polarization direction of the second polarizer is perpendicular to the polarization direction of the third polarizer, specifically, the polarization direction of the second polarizer may be the first direction, and the polarization direction of the third polarizer is the second direction, or the polarization direction of the second polarizer may be the second direction, and the polarization direction of the third polarizer is the first direction, which is not limited herein.

In the embodiment of the present application, there are two cases of the attaching manner of the display panel 20 and the adjusting panel 10.

In the first case, the side of the adjusting panel 10 on which the first substrate 101 is disposed faces the display panel 20, and the polarization direction of the first polarizer 109 is parallel to the first direction.

Specifically, when the adjustment panel 10 is turned on, that is, a voltage is applied to the plurality of first electrodes 103 and the second electrode layer 104, and when the display light of the display panel 20 enters the adjustment panel 10 through the first polarizer 109, the liquid crystal in the liquid crystal layer 106 rotates, and the rotation direction of the upper and lower substrates is exactly pi/2 or 3 pi/2, that is, the polarization direction of the light passing through the liquid crystal layer 106 is deflected by pi/2, as shown in fig. 4, wherein the liquid crystal display panel includes a first liquid crystal molecule 1061a, a second liquid crystal molecule 1061b, a third liquid crystal molecule 1061c and a fourth liquid crystal molecule 1061d arranged along the direction of the second substrate 102 toward the first substrate 101, wherein the first liquid crystal molecule 1061a and the fourth liquid crystal molecule 1061d are perpendicular to each other, so that the polarization direction of the light can be deflected by pi/2, and is only schematically shown in the figure to indicate the deflection of the liquid crystal, the light passing through the liquid crystal layer 106 will be deflected into a second light with the polarization direction along the second direction.

When the adjustment panel 10 is closed, the long axis of the liquid crystal in the liquid crystal layer 106 is perpendicular to the first substrate 101 and the second substrate 102, and the light passing through the liquid crystal layer 106 is not deflected and is the first light with the polarization direction along the first direction.

In the second case, the side of the adjusting panel 10 on which the first substrate 101 is disposed faces away from the display panel 20, and the polarization direction of the first polarizer 109 is perpendicular to the first direction, i.e., parallel to the second direction.

Specifically, when the adjustment panel 10 is turned on, the light passing through the liquid crystal layer 106 is deflected to be the first light having the polarization direction along the first direction.

When the adjustment panel 10 is closed, the light passing through the liquid crystal layer 106 is not deflected, and is a second light having a polarization direction along the second direction.

In the embodiment of the present application, a display device may emit both a first light and a second light by a space division method or a time division method, and then the auxiliary device is used to implement 3D display, two display methods will be described below, and for illustration, a side of the adjusting panel 10 on which the first substrate 101 is disposed faces the display panel 20, and a polarization direction of the first polarizer 109 is parallel to the first direction.

In the space division method, the adjusting panel 10 may be divided into two regions, as shown in fig. 6A, wherein the adjusting panel 101 corresponding to the first region 113 is in an on state, that is, a voltage is applied to the first electrode 103 and the second electrode layer 104 therein, so that the liquid crystal in the first region 113 rotates, and the liquid crystal at the upper and lower substrates can rotate exactly pi/2, the light passing through the first region 113 is a second light having a polarization direction along the second direction, in addition, the adjusting panel 101 corresponding to the second region 114 is in an off state, that is, the light passing through the second region 114 is a first light having a polarization direction along the first direction, and in cooperation with the auxiliary device, the first light can pass through the second polarizer, the second light can pass through the third polarizer, and in the using process, the auxiliary device can be worn on the face of a user, the second polarizer and the third polarizer respectively correspond to two eyes, so that the two eyes can see different pictures, and 3D display is further realized.

In the time division method, turning on and off of the adjusting panel 10 are set to be alternate periods, as shown in fig. 6B, wherein in a first period T1, the adjusting panel 10 is turned on, and then the light passing through the adjusting panel 10 is a second light having a polarization direction along the second direction, and in a second period T2, the adjusting panel is turned off, and then the light passing through the adjusting panel 10 is a first light having a polarization direction along the first direction, and the first light can pass through the second polarizer and the second light can pass through the third polarizer in cooperation with the auxiliary device, and in a using process, the auxiliary device can be worn on a user's face, wherein the second polarizer and the third polarizer respectively correspond to two eyes, so that the two eyes can see different pictures, thereby realizing 3D display.

In summary, the embodiments of the present application provide a tuning panel, and a first electrode and a photo-alignment layer, and the arrangement direction of the first electrodes is vertical to the alignment direction of the alignment layer, so that the liquid crystal molecules of the upper and lower substrates rotate pi/2 or 3 pi/2, namely, the polarization direction of light in a local area can be selected to be pi/2 by adjusting the on state of the panel, and a chiral agent is added into the liquid crystal layer, and polymer particles are formed on the upper and lower substrates, further improving the response speed and twist angle of the liquid crystal to obtain a display device having high contrast, high transmittance and fast response, simultaneously, adjusting panel can realize double screen control, realizes 2 kinds of pictures of polarization direction mutually perpendicular, and collocation auxiliary device is in order to realize 3D demonstration, and closes adjusting panel and convert 2D demonstration into, has improved display device's suitability.

Further, an embodiment of the present application further provides a method for manufacturing a display device, please refer to fig. 1A, fig. 1B, fig. 1C, fig. 5 and fig. 7, where the method includes:

s10, a plurality of first electrodes 103 are formed on the first substrate 101 in a stripe shape arranged along the first direction.

S20, sequentially forming a second electrode layer 104 and a photo-alignment layer 105 on the second substrate 102, wherein the photo-alignment layer 105 has a pre-tilt angle tilted along a second direction, and projections of the first direction and the second direction on the first substrate 101 are perpendicular to each other.

The material of the photo-alignment layer 105 may be a photo-alignment material, and the photo-alignment layer 105 is formed by ultraviolet irradiation, so that foreign matters can be prevented from being generated in the alignment process, and the substrate is prevented from being contaminated, and the pretilt angle of the photo-alignment layer 105 is between 0.1 and 5 degrees.

S30, the first substrate 101 with the first electrodes 103 is paired with the second substrate 102 with the photo-alignment layer 105, and a liquid crystal layer 106 is injected to form the adjustment panel 10.

The liquid crystal layer 106 comprises a dielectric negative liquid crystal, a chiral agent and a polymer monomer, wherein the content of the chiral agent is 0.005-30%, and the polymer monomer comprises acrylate and epoxy resin monomers.

Specifically, the step S30 further includes:

s301, applying a voltage to the plurality of first electrodes 103 and the second electrode layer 104 to deflect liquid crystals in the liquid crystal layer 106, and irradiating the liquid crystal layer 106 with ultraviolet light.

S302, stopping applying the voltage to the plurality of first electrodes 103 and the second electrode layer 104, and irradiating the liquid crystal layer 106 with ultraviolet light, so that the polymer monomers form a first direction control layer 1071 on the first substrate 101 and form a second direction control layer 1072 on the second substrate 102, wherein the first direction control layer 1071 includes a plurality of first polymer particles inclined along the first direction, and the second direction control layer 1072 includes a plurality of second polymer particles inclined along the second direction.

In step S302, the polymer monomers in the liquid crystal layer 106 may be completely reacted, so as to improve the quality of the display device.

S40, preparing the display panel 20, and attaching the display panel to the adjusting panel 10, thereby obtaining the display device described in the above embodiment, wherein the specific structure of the display device is the same as that of the display device described in the above embodiment, and the details are not repeated herein.

To sum up, the display device provided in the embodiment of the present application includes the adjustment panel, the first electrode and the optical alignment layer, where the arrangement direction of the first electrode is perpendicular to the alignment direction of the alignment layer, so as to rotate the liquid crystal molecules of the upper and lower substrates by pi/2 or 3 pi/2, that is, the adjustment panel can select the optical polarization direction of the local region as pi/2 in the on state, the chiral agent is added into the liquid crystal layer, and the polymer particles are formed on the upper and lower substrates, thereby further improving the response speed and the twist angle of the liquid crystal, and obtaining the display device with high contrast, high transmittance, and fast response, and meanwhile, the adjustment panel can implement dual-screen control, implement 2 pictures with mutually perpendicular polarization directions, match with the auxiliary device to implement 3D display, and turn off the adjustment panel to convert into 2D display, the applicability of the display device is improved.

In the foregoing embodiments, the descriptions of the respective embodiments have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to related descriptions of other embodiments.

The display device and the manufacturing method thereof provided by the embodiments of the present application are described in detail above, and the principle and the implementation manner of the present application are explained by applying specific examples herein, and the description of the embodiments above is only used to help understanding the technical scheme and the core idea of the present application; those of ordinary skill in the art will understand that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications or substitutions do not depart from the spirit and scope of the present disclosure as defined by the appended claims.

Claims

1. A display device, comprising a display panel and an adjustment panel attached to one side of the display panel, wherein the adjustment panel comprises:

2. The display device according to claim 1, wherein the liquid crystal in the liquid crystal layer comprises a dielectric negative liquid crystal, and a pitch of the liquid crystal is between 5um and 120 um.

3. The display device according to claim 1, wherein the liquid crystal layer further comprises a chiral agent, and the content of the chiral agent is 0.005-30%.

4. The display device according to claim 1, wherein the adjustment panel further comprises a first direction control layer disposed on the first substrate, wherein the first direction control layer comprises a plurality of first polymer particles inclined in the first direction, and a second direction control layer disposed on the second substrate, wherein the second direction control layer comprises a plurality of second polymer particles inclined in the second direction.

5. The display device according to claim 1, wherein a side of the display panel facing the adjustment panel is provided with a first polarizing plate, a side of the adjustment panel provided with the first substrate faces the display panel, and a polarization direction of the first polarizing plate is parallel to the first direction.

6. The display device according to claim 1, wherein a side of the display panel facing the adjustment panel is provided with a first polarizing plate, a side of the adjustment panel provided with the first substrate faces away from the display panel, and a polarization direction of the first polarizing plate is perpendicular to the first direction.

7. The display device according to claim 1, wherein the display device further comprises an auxiliary device, the auxiliary device comprises a second polarizer and a third polarizer, and the polarization direction of the second polarizer is perpendicular to the polarization direction of the third polarizer, and the polarization direction of the second polarizer is along the first direction or the second direction.

8. A method of making a display device, the method comprising:

9. The method of claim 8, wherein in step S30, the liquid crystal layer comprises a dielectric negative liquid crystal, a chiral agent, and a polymer monomer.

10. The method for manufacturing a display device according to claim 9, wherein the step S30 further includes: