A display panel and display device

Abstract

The application discloses a display panel and a display device, and relates to the technical field of display panels, and specifically discloses a display panel comprising a first display area, a second display area, and a display liquid crystal box and a control liquid crystal box which are arranged in layers; the control liquid crystal box comprises a first array substrate, a first opposite substrate, and a first liquid crystal layer between the first array substrate and the first opposite substrate; the first array substrate comprises a first electrode, a second electrode, and a first common electrode; the first opposite substrate comprises a second common electrode; wherein the first electrode and the first common electrode are located in the first display area; and the second electrode and the second common electrode are located in the second display area. By using the technical scheme, the regional design can be realized, the local precise dimming and the wide and narrow viewing angle adjusting functions can be realized at the same time, and in actual application, the co-pilot entertainment display can be arranged in the second display area, so that the attention of the driver is prevented from being distracted in the driving process and the driving safety is affected, and other vehicle displays can be arranged in the first display area, so that the display effect can be improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of display, in particular to a display panel and a display device. BACKGROUND

[0002] Liquid crystal display (LCD) has been widely used due to its low power consumption, thinness, soft picture and no harm to eyes.

[0003] With the rapid development of liquid crystal display technology, dual cell LCD gradually enters the market, some of which have the characteristics of high contrast ratio and local precise dimming, and some of which have the function of wide and narrow viewing angle adjustment.

[0004] However, the dual cell LCD with local precise dimming cannot simultaneously realize the function of wide and narrow viewing angle adjustment, and the dual cell LCD with wide and narrow viewing angle adjustment cannot simultaneously realize the function of local precise dimming.

[0005] Therefore, in order to more flexibly adapt to various use scenarios, how to utilize the dual cell to simultaneously realize multiple display functions, such as how to make the dual cell LCD compatible with local precise dimming and wide and narrow viewing angle adjustment at the same time, is a technical problem to be solved at present. SUMMARY

[0006] The present application provides a display panel and a display device to make the dual cell LCD compatible with local precise dimming and wide and narrow viewing angle adjustment at the same time.

[0007] According to an aspect of the present application, a display panel is provided, comprising: a first display area and a second display area;

[0008] The display panel further comprises a display liquid crystal cell and a control liquid crystal cell arranged in layers; the control liquid crystal cell comprises a first array substrate, a first opposing substrate, and a first liquid crystal layer between the first array substrate and the first opposing substrate; the display liquid crystal cell comprises a second array substrate, a second opposing substrate, and a second liquid crystal layer between the second array substrate and the second opposing substrate;

[0009] The first array substrate comprises a first electrode layer and a second electrode layer; the first electrode layer comprises a first electrode and a second electrode; the second electrode layer comprises a first common electrode; the first opposing substrate comprises a third electrode layer; the third electrode layer comprises a second common electrode;

[0010] The first electrode and the first common electrode are located in the first display area; the second electrode and the second common electrode are located in the second display area.

[0011] According to another aspect of the present application, there is provided a display device comprising the display panel as described above.

[0012] The technical scheme of the present application, by setting the first electrode and the first common electrode of the first display area on the same side of the first liquid crystal layer, and the second electrode and the second common electrode of the second display area on the opposite sides of the first liquid crystal layer, so that a horizontal electric field can be formed in the first liquid crystal layer in the first display area to control the flux of light, and a vertical electric field can be formed in the first liquid crystal layer in the second display area to control the phase difference of light at different viewing angles, the display panel can realize regional design, and at the same time realize local precise dimming and wide-narrow viewing angle adjustment functions. In actual application, the co-pilot entertainment display of the vehicle-mounted large screen can be set in the second display area to prevent it from distracting the driver's attention during driving and affecting driving safety, and other vehicle-mounted displays can be set in the first display area to improve display effect. In addition, only one display liquid crystal box and one control liquid crystal box can realize local precise dimming and wide-narrow viewing angle adjustment functions at the same time, which is conducive to the thinning and low power consumption of the display panel.

[0013] It should be understood that the content described in this part is not intended to identify key or important features of the embodiments of the present application, nor is it used to limit the scope of the present application. Other features of the present application will become apparent from the following description. BRIEF DESCRIPTION OF DRAWINGS

[0014] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed in the embodiment description will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative labor.

[0015] Figure 1 is a structural schematic diagram of a display panel provided by an embodiment of the present application;

[0016] Figure 2 is a structural schematic diagram of a control liquid crystal box provided by an embodiment of the present application;

[0017] Figure 3 is a structural schematic diagram of another display panel provided by an embodiment of the present application;

[0018] Figure 4 is a structural schematic diagram of another control liquid crystal box provided by an embodiment of the present application;

[0019] Figure 5 is a structural schematic diagram of another control liquid crystal box provided by an embodiment of the present application;

[0020] Figure 6is a structure schematic diagram of another control liquid crystal box provided by the embodiment of the present application;

[0021] Figure 7 is a structure schematic diagram of another control liquid crystal box provided by the embodiment of the present application;

[0022] Figure 8 is a structure schematic diagram of another control liquid crystal box provided by the embodiment of the present application;

[0023] Figure 9 is a schematic diagram of light diffusion provided by the embodiment of the present application;

[0024] Figure 10 is a structure schematic diagram of another control liquid crystal box provided by the embodiment of the present application;

[0025] Figure 11 is a structure schematic diagram of another display panel provided by the embodiment of the present application;

[0026] Figure 12 is a structure schematic diagram of a display device provided by the embodiment of the present application. DETAILED DESCRIPTION

[0027] In order to make the personnel in the art better understand the present application, the technical solutions in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, but not all the embodiments. Based on the embodiments in the present application, all the other embodiments obtained by the personnel in the art without creative labor should belong to the protection scope of the present application.

[0028] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and do not have to be used to describe a specific order or sequence. It should be understood that the data thus used can be interchanged under appropriate circumstances, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusion, for example, a process, method, system, product or device including a series of steps or units does not have to be limited to those steps or units clearly listed, but can include other steps or units not clearly listed or inherent to these processes, methods, products or devices.

[0029] The display device is in the stage of diversification development, and the viewing angle requirements required to be met by different display areas are also different. For example, for a large screen of a vehicle, more and more high-end customers hope to have a large-size screen integrated with a car instrument panel in front of a driving position, a car information terminal with functions of multimedia playing such as CD and DVD, a reversing image and GPS navigation, and a large screen design of a co-driver entertainment display. Too many display contents are easy to distract the attention of a driver on the driving position, and affect the driving safety. Therefore, it is necessary to avoid the person who is driving from seeing the information on the co-driver entertainment display, distracting the attention of the driver, and causing a driving safety accident. The display with a narrow viewing angle is not conducive to the person who is driving to understand the state of the vehicle in time through the information on the car instrument panel and the car information terminal.

[0030] The double-box liquid crystal display panel is composed of two liquid crystal boxes, one of which is a display liquid crystal box and the other is a control liquid crystal box. Some control liquid crystal boxes can change the light flux of light, and are used for adjusting the display brightness to provide different regional brightness at the pixel level for the display liquid crystal box, so as to improve the display contrast. Some control liquid crystal boxes can change the direction of light, adjust the emission direction of light in the control liquid crystal box, and realize the adjustment of wide and narrow viewing angles. However, the double-box liquid crystal display panel in the prior art can only realize one of the functions of local precise dimming and wide and narrow viewing angle adjustment. The structure of the double-box liquid crystal display panel in the prior art is not conducive to the integration of large screen functions. The single function will affect the driving safety or the display effect. If it is desired to simultaneously realize the functions of local precise dimming and wide and narrow viewing angle adjustment, three liquid crystal boxes are required. At this time, the thickness and power consumption of the display panel will be greatly increased, which will be not conducive to the thinning and low power consumption of the display panel.

[0031] To solve the above technical problems, an embodiment of the present application provides a display panel, comprising: a first display area and a second display area; the display panel further comprises a display liquid crystal box and a control liquid crystal box which are arranged in layers; the control liquid crystal box comprises a first array substrate, a first opposite substrate, and a first liquid crystal layer between the first array substrate and the first opposite substrate; the display liquid crystal box comprises a second array substrate, a second opposite substrate, and a second liquid crystal layer between the second array substrate and the second opposite substrate; the first array substrate comprises a first electrode layer and a second electrode layer; the first electrode layer comprises a first electrode and a second electrode; the second electrode layer comprises a first common electrode; the first opposite substrate comprises a third electrode layer; the third electrode layer comprises a second common electrode; wherein the first electrode and the first common electrode are located in the first display area; the second electrode and the second common electrode are located in the second display area.

[0032] According to the technical scheme, the first electrode and the first common electrode of the first display area are located on the same side of the first liquid crystal layer, and the second electrode and the second common electrode of the second display area are located on the opposite sides of the first liquid crystal layer, so that a horizontal electric field can be formed in the first liquid crystal layer of the first display area to control the flux of light, and a vertical electric field can be formed in the first liquid crystal layer of the second display area to control the phase difference of light at different viewing angles, the display panel can realize regional design, and can realize local precise dimming and wide-narrow viewing angle adjustment functions, in actual application, the display of the second driver entertainment of the vehicle large screen can be arranged in the second display area, so as to prevent the display from distracting the attention of the driver during driving and affecting the driving safety, and other vehicle displays can be arranged in the first display area to improve the display effect; in addition, the local precise dimming and wide-narrow viewing angle adjustment functions can be realized by only one display liquid crystal box and one control liquid crystal box, which is beneficial to the thinning and low power consumption of the display panel.

[0033] The above is the core idea of the present application. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application. The technical solutions in the embodiments of the present application will be described clearly and completely with reference to the accompanying drawings.

[0034] Figure 1 is a structural schematic diagram of a display panel provided by an embodiment of the present application. Referring to Figure 1 , the display panel 100 includes a first display area 101 and a second display area 102; the display panel 100 further includes a display liquid crystal box 300 and a control liquid crystal box 200 which are stacked; the control liquid crystal box 200 includes a first array substrate 210, a first opposite substrate 220, and a first liquid crystal layer 230 located between the first array substrate 210 and the first opposite substrate 220; the display liquid crystal box 300 includes a second array substrate 310, a second opposite substrate 320, and a second liquid crystal layer 330 located between the second array substrate 310 and the second opposite substrate 320; the first array substrate 210 includes a first electrode layer 211 and a second electrode layer 212; the first electrode layer 211 includes a first electrode 201 and a second electrode 202; the second electrode layer 212 includes a first common electrode 203; the first opposite substrate 220 includes a third electrode layer 223; the third electrode layer 223 includes a second common electrode 204; wherein the first electrode 201 and the first common electrode 203 are located in the first display area 101; the second electrode 202 and the second common electrode 204 are located in the second display area 102.

[0035] Specifically, the first electrode 201 and the first common electrode 203 located in the first display area 101 are located on the first array substrate 210 and on the same side of the first liquid crystal layer 230, and the first electrode 201 and the first common electrode 203 can form a horizontal electric field in the first liquid crystal layer 230, and the liquid crystal molecules in the first liquid crystal layer 230 located in the first display area 101 are horizontally distributed. A plurality of light adjustment areas can be formed between each first electrode 201 and each first common electrode 203, and the light transmittance of each light adjustment area in the first display area 101 can be controlled by controlling the potential of each first electrode 201, so as to adjust the display brightness of each light adjustment area, realize local precise dimming, and improve the contrast of the first display area 101.

[0036] In an optional embodiment, the first electrode layer 211 and the second electrode layer 212 can be multiplexed, the first electrode 201 and the first common electrode 203 can be arranged in the same layer and insulated from each other, which can reduce the thickness of the first array substrate 210 and facilitate the thinning of the display panel 100, and can also simplify the manufacturing process and improve the manufacturing efficiency.

[0037] The second electrode 202 located in the second display area 102 is located on the first array substrate 210, and the second common electrode 204 located in the second display area 102 is located on the first opposite substrate 220. The second electrode 202 and the second common electrode 204 are located on opposite sides of the first liquid crystal layer 230, and the second electrode 202 and the second common electrode 204 can form a vertical electric field in the first liquid crystal layer 230. The liquid crystal molecules in the first liquid crystal layer 230 located in the second display area 102 are vertically distributed. In the narrow viewing angle mode, by controlling the potential of the second electrode 202 and forming a potential difference with the second common electrode 204, the liquid crystal molecules in the control liquid crystal box 200 of the second display area 102 can be controlled to be vertically distributed. Since the phase difference of light passing through the liquid crystal molecules is different in different directions when the liquid crystal molecules are in the vertical state, the phase difference of light in different viewing angles is obviously different, and the phase difference of light in a small viewing angle range is small, so the narrow viewing angle mode can be realized. When the second electrode 202 is not powered, no potential difference is formed with the second common electrode 204, and the liquid crystal molecules in the control liquid crystal box 200 of the second display area 102 are freely distributed. The disordered arrangement of the liquid crystal molecules will make the light passing through the liquid crystal layer 230 experience different phase differences, and the phase difference of light in different directions is small. The light passing through the control liquid crystal box 200 of the second display area 102 can be emitted at a wide viewing angle, that is, the wide viewing angle mode is realized.

[0038] In an optional embodiment, the second electrode 202 of the first electrode layer 211 is a one-piece structure, and the second common electrode 204 of the third electrode layer 223 is a one-piece structure, which can simplify the manufacturing process.

[0039] The electrodes 301 and 302 of the display liquid crystal cell 300 are located on the second array substrate 310, and a horizontal electric field can be formed in the second liquid crystal layer 330. The display liquid crystal cell 300 can control the horizontal rotation of liquid crystal molecules in the second liquid crystal layer 330 according to an image signal, and control the light to pass through or be blocked by the display liquid crystal cell 300 to form an image display.

[0040] It should be noted that the display liquid crystal cell 300 is shown above and the control liquid crystal cell 200 is shown below in the figure, which is only an example of the stacking relationship of the display liquid crystal cell 300 and the control liquid crystal cell 200. In actual application, the display liquid crystal cell 300 can be below and the control liquid crystal cell 200 can be above, and the embodiments of the present application do not limit this.

[0041] The horizontal electric field or the horizontal distribution of liquid crystal molecules means that the direction of the electric field or the long axis direction of the liquid crystal molecules is parallel to the plane where the first array substrate 210 or the first opposite substrate 220 is located. The vertical electric field or the vertical distribution of liquid crystal molecules means that the direction of the electric field or the long axis direction of the liquid crystal molecules is perpendicular to the plane where the first array substrate 210 or the first opposite substrate 220 is located.

[0042] It can be understood that the display panel 100 further includes a backlight module (not shown in the figure) arranged on the backlight surface of the display liquid crystal cell 300 and the control liquid crystal cell 200. The backlight module includes a backlight source, and the backlight source emits light and emits the display panel 100 through the display liquid crystal cell 300 and the control liquid crystal cell 200. The backlight source includes but is not limited to a light emitting diode (LED), a cold cathode fluorescent lamp (CCFL), an electroluminescence (EL) sheet and / or an organic electroluminescence (OLED) sheet and / or other light emitting devices. The first array substrate 210 includes a first driving circuit (not shown in the figure), and the first driving circuit can control the potential of the first electrode 201 and the second electrode 203. The second array substrate 310 includes a second driving circuit (not shown in the figure), and the first driving circuit can control the potential of the electrode 301 or 302.

[0043] For example, when the display panel 100 provided by the embodiment of the present application is applied to a large screen of a vehicle, the automobile instrument panel and the vehicle-mounted central control information terminal are arranged in the first display area 101, and the co-driver entertainment display is arranged in the second display area 102. The automobile instrument panel and the vehicle-mounted central control information terminal arranged in the first display area 101 can realize local precise dimming, have higher contrast, and have better display effect, which is beneficial to clear display. The co-driver entertainment display arranged in the second display area 102 can switch between wide and narrow viewing angles, for example, when the vehicle is not in the driving process, the wide viewing angle mode is started; when the vehicle is in the driving process, the narrow viewing angle mode is started, so as to avoid the co-driver entertainment display from distracting the attention of the driver at the driving position and affecting the driving safety; when the wide viewing angle mode is started, the second electrode 202 is not powered, and the energy consumption can also be reduced.

[0044] In the embodiment of the present application, the first electrode and the first common electrode of the first display area are arranged on the same side of the first liquid crystal layer, and the second electrode and the second common electrode of the second display area are arranged on the opposite sides of the first liquid crystal layer, so that a horizontal electric field can be formed in the first liquid crystal layer of the first display area to control the flux of light, and a vertical electric field can be formed in the first liquid crystal layer of the second display area to control the phase difference of light of different viewing angles. The display panel can realize regional design, and can realize local precise dimming and wide-narrow viewing angle adjustment functions. In actual application, the co-driver entertainment display of the large screen of the vehicle can be arranged in the second display area to prevent it from distracting the attention of the driver in the driving process and affecting the driving safety, and other vehicle displays can be arranged in the first display area to improve the display effect. In addition, the local precise dimming and the wide-narrow viewing angle adjustment functions can be realized simultaneously by only one display liquid crystal box and one control liquid crystal box, which is beneficial to the thinning and low-power consumption of the display panel.

[0045] Optionally, Figure 2 is a structural schematic diagram of a control liquid crystal box provided by the embodiment of the present application. Referring to Figure 2 The control liquid crystal box 200 further comprises a dam structure 240. The dam structure 240 is located between the first array substrate 210 and the first opposite substrate 220, and between the first display area 101 and the second display area 102. The dam structure 240 can avoid the mutual influence between the horizontally distributed liquid crystal molecules in the first liquid crystal layer 230 of the first display area 101 and the vertically distributed liquid crystal molecules in the first liquid crystal layer 230 of the second display area 102, avoid the performance reduction of the first liquid crystal layer 230 caused by the continuity of the liquid crystal, and affect the image quality, the resolution, the clarity, the stability and the service life of the first liquid crystal layer 230.

[0046] In an optional embodiment, the dam structure 240 comprises a light shielding material, which can prevent the light crosstalk between the first display area 101 and the second display area 102 and improve the display effect.

[0047] Optionally, Figure 3 is another structural schematic diagram of a display panel provided by an embodiment of the present application. Referring to Figure 3 The second opposite substrate 320 comprises a filter layer 321; the filter layer 321 comprises a light-transmitting region 303 and a light-blocking region 304; the third electrode layer 223 further comprises a sub-common electrode 205; in the thickness direction of the display panel 100, the sub-common electrode 205 overlaps the first electrode 201 or the first common electrode 202, and the sub-common electrode 205 overlaps at least part of the light-blocking region 304.

[0048] The light-transmitting region 303 comprises a blue filter film, a red filter film and a green filter film, and the light-blocking region 304 comprises a light-blocking material. The light-blocking material of the light-blocking region 304 can block the mixing of blue light, red light and green light transmitted by adjacent blue filter films, red filter films and green filter films, thereby improving display contrast. The light-blocking material of the light-blocking region 304 can also prevent external ambient light from entering the display panel, affecting the channel width of the thin film transistor in the first array substrate 210 and / or the second array substrate 310, causing false display, and preventing external ambient light from being incident on the metal traces in the first array substrate 210 and / or the second array substrate 310, causing strong reflection and affecting display effect.

[0049] Specifically, the sub-common electrode 205 is located in the first display area 101, and the sub-common electrode 205 is insulated from the second common electrode 204. In the thickness direction of the display panel 100, the sub-common electrode 205 can cover the junctions of the light-adjusting regions of the first display area 101, wherein in the thickness direction of the display panel 100, the light-adjusting region covers at least one light-transmitting region 303. When the first display area 101 displays an image, the sub-common electrode 205 can directly receive a common voltage signal, and the sub-common electrode 205 can form a vertical electric field with the first electrode 201 or the first common electrode 202. The liquid crystal molecules at the junctions of the light-adjusting regions in the first liquid crystal layer 230 are vertically distributed, that is, the light at the junctions of the light-adjusting regions is vertically emitted. In this way, the light at adjacent light-adjusting regions can be prevented from affecting each other, causing light crosstalk and affecting local precise light adjustment.

[0050] Optionally, Figure 4 is another structural schematic diagram of a display panel provided by an embodiment of the present application. Referring to Figure 4 The second electrode layer 212 further comprises a third common electrode 206; the third common electrode 206 is insulated from the first common electrode 203; and the third common electrode 206 and the second common electrode 204 receive a common voltage signal at different times.

[0051] Specifically, when the second electrode 202 and the second common electrode 204 are powered at the same time, the second electrode 202 and the second common electrode 204 form a vertical electric field, and the liquid crystal molecules in the control liquid crystal cell 200 of the second display area 102 are vertically distributed. Since the phase difference of light rays is large at different viewing angles when the liquid crystal molecules are in the vertical state, the second display area 102 has a narrow viewing angle. When the second electrode 202 and the third common electrode 206 are powered at the same time, the second electrode 202 and the third common electrode 206 form a horizontal electric field, and the liquid crystal molecules in the control liquid crystal cell 200 of the second display area 102 are horizontally distributed. At this time, the phase difference of light rays is small when light rays from different directions pass through the liquid crystal molecules, that is, the phase difference of light rays is small within a larger viewing angle range, so that the light rays passing through the control liquid crystal cell 200 of the second display area 102 can be emitted at a wide viewing angle, increasing the viewing angle of the second display area 102, and the second display area 102 enters the wide viewing angle mode. By providing the third common electrode 206 on the second electrode layer 212, the distribution of the liquid crystal molecules in the control liquid crystal cell 200 of the second display area 102 can be accurately controlled, and the switching between the wide and narrow viewing angle modes of the second display area 102 can be accurately controlled.

[0052] In an optional embodiment, the first electrode layer 211 and the second electrode layer 212 can be multiplexed, the first electrode 201, the first common electrode 203, the second electrode 203, and the third common electrode 206 can be provided in the same layer and insulated from each other. In this way, the thickness of the first array substrate 210 can be reduced, which is beneficial to the thinning of the display panel 100. Moreover, the preparation process can be simplified, and the preparation efficiency can be improved.

[0053] Optionally, Figure 5 is another control liquid crystal cell structure provided by the embodiment of the present application. Referring to Figure 5 , the control liquid crystal cell 200 further includes an optical functional layer 250; the optical functional layer 250 is located on the side of the first array substrate 210 or the first opposite substrate 220 close to the first liquid crystal layer 230, and the optical functional layer 250 is located at least in the second display area 102; the refractive index of at least part of the optical functional layer 250 is equal to the long-axis refractive index of the liquid crystal molecules in the first liquid crystal layer 230; the side surface of the optical functional layer 250 close to the first liquid crystal layer 230 intersects the first direction X; the first direction X is the arrangement direction of the first display area 101 and the second display area 102.

[0054] It can be understood that the refractive index of the optical functional layer 250 located in the second display area 102 is equal to the long axis refractive index of the liquid crystal molecules in the first liquid crystal layer 230 located in the second display area 102, the optical functional layer 250 can be located only in the second display area 102; or the optical functional layer 250 can also be located in the first display area 101 and the second display area 102 at the same time, the refractive index of the optical functional layer 250 located in the first display area 101 can be equal to or not equal to the long axis refractive index of the liquid crystal molecules in the first liquid crystal layer 230 located in the second display area 102, and the present embodiment does not limit whether the optical functional layer 250 is arranged in the first display area 101 and whether the refractive index of the optical functional layer 250 located in the first display area 101 is equal to the long axis refractive index of the liquid crystal molecules in the first liquid crystal layer 230 located in the second display area 102.

[0055] For example, the optical functional layer 250 is located on the side of the first opposite substrate 220 close to the first liquid crystal layer 230. In the narrow viewing angle mode, a vertical electric field is formed between the second electrode 202 and the second common electrode 204, the direction of light transmission is parallel to the long axis direction of the liquid crystal molecules in the first liquid crystal layer 230 located in the second display area 102, the light in the second display area 102 is vertically emitted out of the first liquid crystal layer 230, at this time, the refractive index of the first liquid crystal layer 230 located in the second display area 102 is the long axis refractive index. When the light in the second display area 102 is incident on the optical functional layer 250 from the first liquid crystal layer 230, the light does not refract, and the light in the second display area 102 can be vertically emitted out of the control liquid crystal box 200 or emitted out of the control liquid crystal box 200 at a small viewing angle, realizing the narrow viewing angle mode.

[0056] In the wide viewing angle mode, no vertical electric field is formed between the second electrode 202 and the second common electrode 204, the direction of light transmission intersects the long axis direction of the liquid crystal molecules in the first liquid crystal layer 230 located in the second display area 102, for example, the direction of light transmission is parallel to the short axis direction of the liquid crystal molecules in the first liquid crystal layer 230 located in the second display area 102, the light in the second display area 102 is emitted out of the first liquid crystal layer 230 at a certain viewing angle, at this time, the refractive index of the first liquid crystal layer 230 located in the second display area 102 is the short axis refractive index, the short axis refractive index of the liquid crystal molecules is smaller than the long axis refractive index, and therefore, the short axis refractive index is not equal to the refractive index of the optical functional layer 250 located in the second display area 102. The surface of the optical functional layer 250 close to the first liquid crystal layer 230 is uneven, when the light in the second display area 102 is incident on the optical functional layer 250 at a certain viewing angle or vertically from the first liquid crystal layer 230, the light refracts, and the light in the second display area 102 can be emitted out of the control liquid crystal box 200 at a large viewing angle, realizing picture sharing. In this way, the viewing angle of the second display area 102 can be increased in the wide viewing angle mode, and the display effect of the second display area 102 can be improved.

[0057] In an optional embodiment, continuing to refer to Figure 5 The optical functional layer 250 comprises a plurality of prism structures 255 arranged in sequence along the first direction X, the prism structure 255 comprises a first refractive surface and a second refractive surface close to the first liquid crystal layer 230; the first refractive surface and the second refractive surface form an included angle α greater than 0° and less than 180°.

[0058] In an optional embodiment, continuing to refer to Figure 5 The control liquid crystal cell 200 further comprises an alignment film 260; when the optical functional layer 250 is located on the side of the first opposite substrate 220 close to the first liquid crystal layer 230, the alignment film 260 is located on the side of the first array substrate 210 close to the first liquid crystal layer 230; or, when the optical functional layer 250 is located on the side of the first array substrate 210 close to the first liquid crystal layer 230, the alignment film 260 is located on the side of the first opposite substrate 220 close to the first liquid crystal layer 230.

[0059] The alignment film 260 comprises a plurality of straight strip-shaped indentations extending in the same direction, which can guide the liquid crystal molecules in the first liquid crystal layer 230 to arrange in the same direction. The alignment film 260 needs to be in contact with the first liquid crystal layer 230, by setting the alignment film 260 on the side of the first liquid crystal layer 230 where the optical functional layer 230 is not set, the influence of the alignment film 260 on the refraction of light by the optical functional layer 250 and the influence on the display effect can be avoided.

[0060] Optionally, Figure 6 is another structure diagram of a control liquid crystal cell provided by an embodiment of the present application. Referring to Figure 6 The optical functional layer 250 comprises a first optical functional layer 251 located in at least part of the first display area 101 and a second optical functional layer 252 located in the second display area 252.

[0061] For example, the first optical functional layer 251 and the second optical functional layer 252 can be prepared in the same process, that is, the refractive index of the first optical functional layer 251 and the refractive index of the second optical functional layer 252 are the same, and are equal to the long axis refractive index of the liquid crystal molecules of the first liquid crystal layer 230. The liquid crystal molecules in the first liquid crystal layer 230 of the first display area 101 are horizontally arranged, therefore, the refractive index of the first liquid crystal layer 230 of the first display area 101 is the short axis refractive index of the liquid crystal molecules, which is not equal to the refractive index of the first optical functional layer 251. When the light of the first display area 101 is incident on the first optical functional layer 251 at a certain viewing angle or perpendicularly, the light is refracted, and the light of the first display area 101 can be emitted out of the control liquid crystal cell 200 at a larger viewing angle, thus, the viewing angle of the first display area 101 can be increased, and the display effect of the first display area 101 can be improved.

[0062] The first optical functional layer 251 can be located in the whole area of the first display area 101, or the first optical functional layer 251 can be located in only a partial area of the first display area 101, and the embodiments of the present application do not limit this.

[0063] In an optional embodiment, the first optical functional layer 251 and the second optical functional layer 252 are prepared in different processes, and the refractive index of the first optical functional layer 251 is greater than the refractive index of the second optical functional layer 252. Wherein, nS < nL = n2 < n1, in the formula, nS is the short axis refractive index of the liquid crystal molecules of the second liquid crystal layer, nL is the long axis refractive index of the liquid crystal molecules of the second liquid crystal layer, n2 is the refractive index of the second optical functional layer, and n1 is the refractive index of the first optical functional layer. The refractive index of the first optical functional layer 251 is greater than the refractive index of the second optical functional layer 252, that is, the difference between the refractive index of the first optical functional layer 251 and the short axis refractive index of the liquid crystal molecules is greater, and the refraction of the light emitted by the first liquid crystal layer 230 is more significant, so that the viewing angle of the first display area 101 is larger, and the visibility of the first display area 101 is improved. When the display panel 100 is applied to a vehicle-mounted large screen, the driver can more easily see the display content of the automobile instrument panel and the vehicle-mounted central control information terminal, and the driving safety is improved.

[0064] Optionally, Figure 7 is another schematic structural diagram of a liquid crystal cell provided by an embodiment of the present application. Referring to Figure 7 , the first display area 101 includes a first sub-display area 103 and a second sub-display area 104; the second sub-display area 104 is located between the first sub-display area 103 and the second display area 102; and the first optical functional layer 251 is located in the second sub-display area 104.

[0065] For example, when the display panel 100 is applied to a vehicle-mounted large screen, the automobile instrument panel is arranged in the first sub-display area 103, the vehicle-mounted central control information terminal is arranged in the second sub-display area 104, and the co-driver entertainment display is arranged in the second display area 102. The driver is located directly in front of the first sub-display area 103, and the driver is located obliquely in front of the second sub-display area 104. The first optical functional layer 251 located in the second sub-display area 104 can increase the viewing angle of the vehicle-mounted central control information terminal, so that the driver can clearly see the picture of the vehicle-mounted central control information terminal. For example, when the automobile is in the process of driving, the driver can clearly see the navigation information of the vehicle-mounted central control information terminal, and the driving safety is improved.

[0066] Optionally, Figure 8 is another schematic structural diagram of a liquid crystal cell provided by an embodiment of the present application. Referring to Figure 8The first optical function layer 251 includes a first sub optical function layer 2511 located at the first sub display area 103 and a second sub optical function layer 2512 located at the second sub display area 104; the view angle of at least part of the light rays passing through the first liquid crystal layer 230 and the first sub optical function layer 2511 is a first view angle; the view angle of at least part of the light rays passing through the first liquid crystal layer 230 and the second sub optical function layer 2511 is a second view angle; the second view angle is not equal to the first view angle.

[0067] Specifically, the first sub optical function layer 2511 can increase the view angle of the first sub display area 103, and the second sub optical function layer 2512 can increase the view angle of the second sub display area 104, so that the first sub display area 103 and the second sub display area 104 have larger view angles, and the display effect can be improved; in addition, the view angle of the first sub display area 103 or the second sub display area 104 can be made larger according to actual needs, so that the user can clearly see the content of the first sub display area 103 and the second sub display area 104.

[0068] In an optional embodiment, the second view angle is greater than the first view angle. For example, when the display panel 100 is applied to a vehicle-mounted large screen, the automobile instrument panel is arranged at the first sub display area 103, and the vehicle-mounted central control information terminal is arranged at the second sub display area 104, and the view angle of the vehicle-mounted central control information terminal is greater than that of the automobile instrument panel, so that the driver located directly in front of the automobile instrument panel can clearly see the screen of the vehicle-mounted central control information terminal, and the driving safety is improved.

[0069] Optionally, continuing to refer to Figure 8 The optical function layer 250 includes a plurality of prism structures 255; the prism structure 255 includes a first refractive surface and a second refractive surface close to the first liquid crystal layer 230; the included angle of the first refractive surface and the second refractive surface located at the first sub display area 103 is a first included angle α1; the included angle of the first refractive surface and the second refractive surface located at the second sub display area 104 is a second included angle α2; the first included angle α1 is not equal to the second included angle α2.

[0070] For example, the refractive index of the first sub optical function layer 2511 and the refractive index of the second sub optical function layer 2512 are both greater than the short axis refractive index of the liquid crystal molecules of the first liquid crystal layer 230, and the first included angle α1 is greater than the second included angle α2. Figure 9 is a schematic diagram of light diffusion provided by an embodiment of the present application. Referring to Figure 9When the light is incident from the first liquid crystal display layer 230 to the first optical function layer 251, the incident angle of the light is greater than the refraction angle, the incident angle of the light incident from the first liquid crystal display layer 230 to the first sub optical function layer 2511 is less than the incident angle of the light incident from the first liquid crystal display layer 230 to the second sub optical function layer 2512, and the refraction angle of the light in the first sub optical function layer 2511 is greater than the refraction angle of the light in the second sub optical function layer 2512, so that the viewing angle of the light passing through the first liquid crystal layer 230 and the first sub optical function layer 2511 is less than the viewing angle of the light passing through the first liquid crystal layer 230 and the second sub optical function layer 2511. In this way, the first sub display area 103 and the second sub display area 104 can have different viewing angles by using the first included angle α1 not equal to the second included angle α2, the first sub optical function layer 2511 and the second sub optical function layer 2512 can be the same material and prepared by the same process, and the preparation process is simplified.

[0071] Optionally, Figure 10 is another structure diagram of a liquid crystal cell provided by an embodiment of the present application. Referring to Figure 10 The display panel 100 further includes a first polaroid 271 located on the side of the first array substrate 210 away from the first liquid crystal layer 230 and a second polaroid 272 located on the side of the first opposite substrate 220 away from the first liquid crystal layer 230; the first polaroid 271 and the second polaroid 272 are located at least in the first display area 101.

[0072] For example, the light transmission axis of the first polarizer 271 is perpendicular to the light transmission axis of the second polarizer 272, the light emitted by the backlight source is converted into polarized light after passing through the first polarizer 271, enters the control liquid crystal box 200, the control liquid crystal box 200 controls the horizontal rotation of the liquid crystal molecules of the first liquid crystal layer 230 in the first display area 101 through the first electrode 201, controls the light flux of the second polarizer 272 through which the polarized light passes, and further achieves the purpose of adjusting the display brightness. The control liquid crystal box 200 controls the liquid crystal molecules of the first liquid crystal layer 230 in the second display area 102 to be vertically arranged or freely arranged through the second electrode 202, controls the exit direction of the exit light, and further realizes the purpose of adjusting the viewing angle by combining the phase difference of the light of different directions passing through the liquid crystal molecules with the different forms of the liquid crystal molecules under the electrode. When the electrode is powered on, the liquid crystal molecules are vertically arranged, the phase difference of the light of different directions is large, and a narrow viewing angle mode is presented; when the electrode is not powered on, the liquid crystal molecules are freely arranged along the horizontal plane under the action of the alignment layer, and the phase difference of the light of different directions is small, so a wide viewing angle mode is presented. When the control liquid crystal box 200 controls the second display area 102 to realize the function of adjusting the wide and narrow viewing angles, the first polarizer 271 and / or the second polarizer 272 are not needed, the first polarizer 271 and the second polarizer 272 can be located only in the first display area 101, so that the light transmittance of the second display area 102 can be increased, the brightness of the backlight source at the second display area 103 can be reduced, and the energy consumption of the display panel 100 can be reduced.

[0073] Optionally, Figure 11 is another structural schematic diagram of a display panel provided by an embodiment of the present application. Referring to Figure 11 The display panel 100 further includes a third polarizer 373 located on the side of the second array substrate 310 away from the second liquid crystal layer 330 and a fourth polarizer 374 located on the side of the second opposite substrate 320 away from the second liquid crystal layer 330; the third polarizer 373 is multiplexed with the second polarizer 272.

[0074] For example, the light transmission axis of the third polarizer 373 is perpendicular to the light transmission axis of the fourth polarizer 374, and the light transmission axis of the third polarizer 373 is also perpendicular to the light transmission axis of the first polarizer 271. The light entering the second liquid crystal layer 330 is polarized light, the display liquid crystal box 300 controls the liquid crystal molecules of the second liquid crystal layer 330 in part of the pixels to rotate by 90° according to the image signal, the liquid crystal molecules of the second liquid crystal layer 330 in part of the pixels do not rotate, controls the blocking of the light, and forms image display. By multiplexing the third polarizer 373 with the second polarizer 272, the thickness of the display panel 100 can be reduced, which is beneficial to the thinning of the display panel 100; and the process can be reduced, and the production efficiency can be improved.

[0075] Based on the same inventive concept, the present application also provides a display device, Figure 12This is a schematic diagram of the structure of a display device provided in an embodiment of the present invention, such as... Figure 12 The display device 400 includes the display panel 100 provided in any embodiment of the present invention. The display device 400 provided in the embodiments of the present invention can be... Figure 12 The in-vehicle screen shown can also be any electronic product with display function, including but not limited to the following categories: mobile phones, televisions, laptops, desktop monitors, tablets, digital cameras, smart bracelets, smart glasses, in-vehicle displays, medical devices, industrial control equipment, touch interactive terminals, etc. The embodiments of the present invention do not make any special limitations on this.

[0076] Note that the above description is merely a preferred embodiment of the present invention and the technical principles employed. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and various obvious changes, readjustments, and substitutions can be made without departing from the scope of protection of the present invention. Therefore, although the present invention has been described in detail through the above embodiments, the present invention is not limited to the above embodiments, and may include many other equivalent embodiments without departing from the concept of the present invention, the scope of which is determined by the scope of the appended claims.

Claims

1. A display panel, characterized in that, include: First display area and second display area; The display panel further includes a display liquid crystal cell and a control liquid crystal cell stacked together; the control liquid crystal cell includes a first array substrate, a first opposing substrate, and a first liquid crystal layer located between the first array substrate and the first opposing substrate; the display liquid crystal cell includes a second array substrate, a second opposing substrate, and a second liquid crystal layer located between the second array substrate and the second opposing substrate. The first array substrate includes a first electrode layer and a second electrode layer; the first electrode layer includes a first electrode and a second electrode; the second electrode layer includes a first common electrode; the first opposing substrate includes a third electrode layer; the third electrode layer includes a second common electrode. Wherein, the first electrode and the first common electrode are located in the first display area; the second electrode and the second common electrode are located in the second display area; In the first display area, multiple dimming areas can be formed between each of the first electrodes and each of the first common electrodes; In the second display area, the display panel includes a wide viewing angle mode and a narrow viewing angle mode; in the wide viewing angle mode, the liquid crystal molecules in the control liquid crystal cell located in the second display area are freely distributed; in the narrow viewing angle mode, the liquid crystal molecules in the control liquid crystal cell located in the second display area are vertically distributed.

2. The display panel according to claim 1, characterized in that, The second electrode layer also includes a third common electrode; The third common electrode is insulated from the first common electrode; and the third common electrode and the second common electrode receive the common voltage signal in a time-sharing manner.

3. The display panel according to claim 1, characterized in that, The second opposing substrate includes a filter layer; the filter layer includes a light-transmitting area and a light-shielding area; The third electrode layer further includes a sub-common electrode; in the thickness direction of the display panel, the sub-common electrode overlaps with the first electrode or the first common electrode, and the sub-common electrode overlaps with at least a portion of the light-shielding area.

4. The display panel according to claim 1, characterized in that, The control liquid crystal cell further includes an optical functional layer; the optical functional layer is located on the side of the first opposing substrate or the first array substrate close to the first liquid crystal layer, and the optical functional layer is at least located in the second display area; At least a portion of the refractive index of the optical functional layer is equal to the long axis refractive index of the liquid crystal molecules in the first liquid crystal layer; The optical functional layer intersects with a first direction on the side surface near the first liquid crystal layer; the first direction is the arrangement direction of the first display area and the second display area.

5. The display panel according to claim 4, characterized in that, The control liquid crystal cell also includes an alignment film; When the optical functional layer is located on the side of the first opposing substrate near the first liquid crystal layer, the alignment film is located on the side of the first array substrate near the first liquid crystal layer; or... When the optical functional layer is located on the side of the first array substrate close to the first liquid crystal layer, the alignment film is located on the side of the first opposing substrate close to the first liquid crystal layer.

6. The display panel according to claim 4, characterized in that, The optical functional layer includes a first optical functional layer located in at least a portion of the first display area and a second optical functional layer located in the second display area.

7. The display panel according to claim 6, characterized in that, nS < nL = n2 < n1; Wherein, nS is the short-axis refractive index of the liquid crystal molecules in the second liquid crystal layer; nL is the long-axis refractive index of the liquid crystal molecules in the second liquid crystal layer; n2 is the refractive index of the second optical functional layer; and n1 is the refractive index of the first optical functional layer.

8. The display panel according to claim 6, characterized in that, The first display area includes a first sub-display area and a second sub-display area; the second sub-display area is located between the first sub-display area and the second display area; The first optical functional layer is located at least in the second sub-display area.

9. The display panel according to claim 8, characterized in that, The first optical functional layer includes a first sub-optical functional layer located in the first sub-display area and a second sub-optical functional layer located in the second sub-display area; The viewing angle of at least a portion of the light passing through the first liquid crystal layer and the first sub-optical functional layer is the first viewing angle; the viewing angle of at least a portion of the light passing through the first liquid crystal layer and the second sub-optical functional layer is the second viewing angle; the second viewing angle is not equal to the first viewing angle.

10. The display panel according to claim 9, characterized in that, The optical functional layer includes multiple prism structures; each prism structure includes a first refractive surface and a second refractive surface near the first liquid crystal layer; the angle between the first refractive surface and the second refractive surface located in the first sub-display area is a first angle; the angle between the first refractive surface and the second refractive surface located in the second sub-display area is a second angle; the first angle is not equal to the second angle.

11. The display panel according to claim 1, characterized in that, The display panel further includes a first polarizer located on the side of the first array substrate away from the first liquid crystal layer and a second polarizer located on the side of the first opposing substrate away from the first liquid crystal layer. The first polarizer and the second polarizer are located at least in the first display area.

12. The display panel according to claim 11, characterized in that, The display panel further includes a third polarizer located on the side of the second array substrate away from the second liquid crystal layer and a fourth polarizer located on the side of the second opposing substrate away from the second liquid crystal layer. The third polarizer is reused with the second polarizer.

13. The display panel according to claim 1, characterized in that, The control LCD box also includes a retaining wall structure; The barrier structure is located between the first array substrate and the first opposing substrate, and between the first display area and the second display area.

14. A display device, characterized in that, Includes the display panel as described in any one of claims 1-13.

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