Display device and method for manufacturing the same

Abstract

A display device and a manufacturing method thereof, the display device comprising a light control panel and a display liquid crystal panel. The display liquid crystal panel is located at the light emitting side of the light control panel; the light control panel comprises a light control area, the light control area is configured to provide an adjusted backlight to the display liquid crystal panel; the display liquid crystal panel comprises a display area, the display area is configured to receive the adjusted backlight to perform display; and the distance between two opposite edges of the light control area in at least one direction is greater than the distance between two opposite edges of the display area in the at least one direction.

Description

Technical Field

[0001] Embodiments of the present disclosure relate to a display device and a method for manufacturing the same. Background Art

[0002] With the continuous development of display technology, users have placed increasingly higher demands on the contrast, brightness uniformity, and other aspects of liquid crystal display devices. Currently, to better control the intensity of light transmitted through the liquid crystal molecules in the liquid crystal layer of the display panel, a light control panel can be installed between the display panel and the backlight module of the liquid crystal display device. This light control panel can adjust the output angle and intensity of the backlight provided by the backlight module, and then provide the adjusted backlight to the display panel for display operation. Summary of the Invention

[0003] At least one embodiment of the present disclosure provides a display device, comprising a light control panel and a display liquid crystal panel, wherein the display liquid crystal panel is located on the light-emitting side of the light control panel; the light control panel comprises a light control area, and the light control area is configured to provide adjusted backlight to the display liquid crystal panel; the display liquid crystal panel comprises a display area, and the display area is configured to receive the adjusted backlight to perform display; and the distance between two opposite edges of the light control area in at least one direction is greater than the distance between two opposite edges of the display area in the at least one direction.

[0004] For example, in the display device provided by at least one embodiment of the present disclosure, the orthographic projection of the display area on the light control panel is located within the light control area.

[0005] For example, in the display device provided by at least one embodiment of the present disclosure, the difference between the distance between the two opposite edges of the light control area in at least one direction and the distance between the two opposite edges of the display area in at least one direction is a predetermined distance, and the value of the predetermined distance is greater than or equal to twice the absolute value of the maximum fitting tolerance between the display liquid crystal panel and the light control panel in at least one direction.

[0006] For example, in the display device provided by at least one embodiment of the present disclosure, the at least one direction includes a first direction and a second direction, the first direction is different from the second direction; the difference between the distance between the two opposite first display edges of the display area in the first direction and the distance between the two opposite first light-control edges of the light-control area in the first direction is a first predetermined distance, and the value of the first predetermined distance is greater than or equal to twice the absolute value of the maximum fitting tolerance between the display liquid crystal panel and the light-control panel in the first direction; the difference between the distance between the two opposite second display edges of the display area in the second direction and the distance between the two opposite second light-control edges of the light-control area in the second direction is a second predetermined distance, and the value of the second predetermined distance is greater than or equal to twice the absolute value of the maximum fitting tolerance between the display liquid crystal panel and the light-control panel in the second direction.

[0007] For example, in the display device provided in at least one embodiment of the present disclosure, the display area includes a plurality of display pixel units arranged in an array, and the absolute value of the maximum fitting tolerance in at least one direction is smaller than the size of the display pixel unit in the at least one direction.

[0008] For example, in the display device provided in at least one embodiment of the present disclosure, the difference between the distance between the two opposite edges of the light control area in at least one direction and the distance between the two opposite edges of the display area in at least one direction is a predetermined distance, and the display area includes a plurality of display pixel units arranged in an array, and the value of the predetermined distance is greater than or equal to the size of the display pixel unit in at least one direction.

[0009] For example, in the display device provided by at least one embodiment of the present disclosure, the display liquid crystal panel also includes a first light-shielding area surrounding the display area, and the orthographic projection of the first light-shielding area on the light-control panel at least partially overlaps with the light-control area in at least one direction.

[0010] For example, in the display device provided by at least one embodiment of the present disclosure, the light control panel includes a light control pixel array, and the light control pixel array is configured to adjust the backlight incident on the light control panel so that the light control panel provides the adjusted backlight to the display liquid crystal panel, and the light control pixel array is located at least in the light control area.

[0011] For example, in the display device provided by at least one embodiment of the present disclosure, the light-control panel also includes a second light-shielding area surrounding the light-control area, and the light-control pixel array includes a plurality of light-control pixel units arranged in an array; the second light-shielding area at least partially blocks the light-control pixel units at the edge of the light-control pixel array in at least one direction.

[0012] For example, in the display device provided by at least one embodiment of the present disclosure, the light control panel also includes a first gate driving circuit; the first gate driving circuit is located in the second light-shielding area and on at least one side of the light control area, and the first gate driving circuit includes a plurality of cascaded first shift register units, and the plurality of first shift register units are respectively electrically connected to a plurality of rows of light control pixel units in the light control pixel array to provide a first gate driving signal; the first shift register unit includes a first transistor, and the first transistor includes two rows of active layers arranged in parallel.

[0013] For example, in the display device provided by at least one embodiment of the present disclosure, the first shift register unit includes an input circuit, an output circuit and an output reset circuit; the input circuit is electrically connected to the first node and configured to write the input signal to the first node in response to an input signal to control the level of the first node; the output circuit is electrically connected to the first node and the output end, configured to receive a clock signal and output the clock signal to the output end as the first gate drive signal under the control of the level of the first node; the output reset circuit is electrically connected to the output end and configured to reset the output end in response to a reset signal; the output circuit includes the first transistor.

[0014] For example, in the display device provided by at least one embodiment of the present disclosure, the output reset circuit includes a second transistor, and the second transistor includes two rows of active layers arranged in parallel.

[0015] For example, in the display device provided by at least one embodiment of the present disclosure, the gate of the first transistor is connected to the first node, the first electrode of the first transistor is connected to the clock signal end to receive the clock signal, and the second electrode of the first transistor is connected to the output end; the gate of the second transistor is connected to the reset end to receive the reset signal, the first electrode of the second transistor is connected to the output end, and the second electrode of the second transistor is connected to the first voltage end.

[0016] For example, in the display device provided by at least one embodiment of the present disclosure, the display liquid crystal panel also includes a second gate driving circuit; the second gate driving circuit is located in the first shading area and on at least one side of the display area, and the second gate driving circuit includes a plurality of cascaded second shift register units, and the plurality of second shift register units are respectively electrically connected to a plurality of rows of display pixel units in the display area to provide a second gate driving signal; the number of transistors included in the first shift register unit is greater than the number of transistors included in the second shift register unit.

[0017] For example, in the display device provided by at least one embodiment of the present disclosure, along the arrangement direction of the two rows of active layers, the size occupied by the first shift register unit is smaller than the row height of a row of light-control pixel units, and the first shift register unit is electrically connected to a corresponding row of light-control pixel units through a signal line, and the signal line is a zigzag line.

[0018] For example, in the display device provided by at least one embodiment of the present disclosure, the light-control pixel array is located in the light-control area, and the light-control pixel array includes an edge light-control pixel unit and a middle light-control pixel unit. The edge light-control pixel unit is arranged along the edge of the light-control area and surrounds the middle light-control pixel unit. In at least one direction, the size of the edge light-control pixel unit is different from the size of the middle light-control pixel unit.

[0019] For example, the display device provided by at least one embodiment of the present disclosure also includes a backlight source, wherein the backlight source is located on a side of the light control panel away from the display liquid crystal panel, and is configured to provide initial backlight to the light control panel, and the light control panel adjusts the initial backlight to obtain the adjusted backlight.

[0020] At least one embodiment of the present disclosure further provides an electronic device, comprising the display device described in any embodiment of the present disclosure.

[0021] At least one embodiment of the present disclosure also provides a method for preparing a display device, comprising: providing a light control panel and a display liquid crystal panel, wherein the light control panel includes a light control area, the light control area is configured to provide adjusted backlight to the display liquid crystal panel, the display liquid crystal panel includes a display area, the display area is configured to receive the adjusted backlight to perform display, and the distance between two opposite edges of the light control area in at least one direction is greater than the distance between two opposite edges of the display area in the at least one direction; and aligning and bonding the light control panel and the display liquid crystal panel, wherein the display liquid crystal panel is located on the light-emitting side of the light control panel.

[0022] For example, in the preparation method provided in at least one embodiment of the present disclosure, aligning and laminating the light control panel and the display liquid crystal panel includes: making the orthographic projection of the display area on the light control panel located within the light control area.

[0023] For example, in the preparation method provided in at least one embodiment of the present disclosure, the difference between the distance between the two opposite edges of the light control area in at least one direction and the distance between the two opposite edges of the display area in at least one direction is a predetermined distance, and the value of the predetermined distance is greater than or equal to twice the absolute value of the maximum fitting tolerance of the alignment in at least one direction.

[0024] At least one embodiment of the present disclosure also provides a light control panel, including a light control area; wherein the light control panel is configured to provide adjusted backlight to a display liquid crystal panel located on the light output side of the light control panel; the display liquid crystal panel includes a display area, and the display area is configured to receive the adjusted backlight to perform display; the distance between two opposite edges of the light control area in at least one direction is greater than the distance between two opposite edges of the display area in the at least one direction.

[0025] For example, in the light control panel provided in at least one embodiment of the present disclosure, the difference between the distance between the two opposite edges of the light control area in at least one direction and the distance between the two opposite edges of the display area in at least one direction is a predetermined distance, and the value of the predetermined distance is greater than or equal to twice the absolute value of the maximum fitting tolerance between the display liquid crystal panel and the light control panel in at least one direction.

[0026] For example, in the light control panel provided in at least one embodiment of the present disclosure, the distance between two opposite edges of the light control area in any direction is greater than the distance between two opposite edges of the display area in any direction. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the technical solutions of the embodiments of the present disclosure, the drawings of the embodiments will be briefly introduced below. Obviously, the drawings in the following description only relate to some embodiments of the present disclosure, rather than limiting the present disclosure.

[0028] Figure 1A A schematic diagram of aligning and laminating a display liquid crystal panel and a light control liquid crystal panel;

[0029] Figure 1B 1 is a schematic structural diagram of a liquid crystal display device;

[0030] Figure 2 A schematic structural diagram of a display device provided in some embodiments of the present disclosure;

[0031] Figure 3 A schematic plan view of a display device provided in some embodiments of the present disclosure;

[0032] Figure 4 A schematic diagram of a light control pixel array and a display pixel array in a display device provided in some embodiments of the present disclosure;

[0033] Figure 5 A schematic diagram of a light control pixel array and a display pixel array in another display device provided in some embodiments of the present disclosure;

[0034] Figure 6 A schematic diagram illustrating a specific arrangement example of an active layer of a first transistor in a first shift register unit provided in some embodiments of the present disclosure;

[0035] Figure 7 A circuit diagram of a specific implementation example of a first shift register unit provided in some embodiments of the present disclosure;

[0036] Figure 8A A schematic diagram of a connection between a first shift register unit and a light-control pixel unit of a first gate driving circuit provided in some embodiments of the present disclosure; and

[0037] Figure 8B A schematic diagram of a connection method between a second shift register unit of a second gate driving circuit and a display pixel unit provided in some embodiments of the present disclosure. DETAILED DESCRIPTION

[0038] To make the purpose, technical solutions, and advantages of the embodiments of the present disclosure more clear, the technical solutions of the embodiments of the present disclosure will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present disclosure. Obviously, the described embodiments are part of the embodiments of the present disclosure, not all of the embodiments. Based on the described embodiments of the present disclosure, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present disclosure.

[0039] Unless otherwise defined, the technical or scientific terms used herein should have the usual meaning understood by a person of ordinary skill in the field to which this disclosure belongs. The words "first", "second" and similar terms used in this disclosure do not indicate any order, quantity or importance, but are only used to distinguish different components. Similarly, words such as "one", "an" or "the" do not indicate a quantitative limitation, but rather indicate the presence of at least one. Words such as "include" or "comprise" mean that the elements or objects preceding the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects.

[0040] Currently, by disposing a light control panel between the display liquid crystal panel and the backlight module of a liquid crystal display device, the brightness of the backlight provided to the display liquid crystal panel can be controlled on a regional basis. For example, the light control panel is typically a light control liquid crystal panel, and the brightness of the backlight provided to the display liquid crystal panel can be adjusted by adjusting the deflection angle of the liquid crystal molecules in the liquid crystal layer of the light control liquid crystal panel. For example, by adjusting the deflection angle of the liquid crystal molecules in the light control liquid crystal panel, the brightness of the backlight provided to the portion of the display liquid crystal panel corresponding to the dark state area of ​​the display screen can be reduced, thereby reducing the intensity of the transmitted light in the dark state area of ​​the display screen, thereby avoiding or reducing the dark state light leakage phenomenon of the liquid crystal display device.

[0041] Typically, the display liquid crystal panel and the light-controlling liquid crystal panel in a liquid crystal display device have the same appearance size and functional size. For example, the display liquid crystal panel and the light-controlling liquid crystal panel have the same shape and size, and the display area in the display liquid crystal panel and the light-controlling area in the light-controlling liquid crystal panel have the same shape and size, so that after the display liquid crystal panel and the light-controlling liquid crystal panel are aligned and bonded, the light-controlling area can correspond to the display area, so that the backlight emitted by the backlight module is provided to the display area after being modulated by the light-controlling area.

[0042] Figure 1A This is a schematic diagram of aligning and laminating a display LCD panel and a light control LCD panel. Figure 1A As shown, the display liquid crystal panel 11 includes a display area 12, and the light control liquid crystal panel 13 includes a light control area 14. The shape and size (i.e., the dimensions in all directions on the plane (horizontal plane) parallel to each other in the figure) of the display area 12 and the light control area 14 are the same.

[0043] For example, Figure 1AAs shown, a plurality of corresponding alignment marks 15 are provided on the display liquid crystal panel 11 and the light-controlling liquid crystal panel 13 for alignment during the process of laminating the display liquid crystal panel 11 and the light-controlling liquid crystal panel 13, so as to achieve alignment of the center C1 of the display area 12 and the center C2 of the light-controlling area 14, as well as the side edges of the display area 12 and the light-controlling area 14 in various directions of the horizontal plane. For example, after the display liquid crystal panel 11 and the light-controlling liquid crystal panel 13 are aligned according to the corresponding alignment marks 15, the line connecting the center C1 of the display area 12 and the center C2 of the light-controlling area 14 is perpendicular to the main surface of the display liquid crystal panel 11 and the main surface of the light-controlling liquid crystal panel 13, and the orthographic projections of the side edges of the display area 12 and the light-controlling area 14 in various directions of the horizontal plane on the main surface of the display liquid crystal panel 11 (or the main surface of the light-controlling liquid crystal panel 13) overlap with each other. Therefore, after the display liquid crystal panel 11 and the light-controlling liquid crystal panel 13 are bonded together, the orthographic projection of the center C2 of the light-controlling area 14 on the display liquid crystal panel 11 can coincide with the center C1 of the display area 12, thereby making the orthographic projection of the light-controlling area 14 on the display liquid crystal panel 11 coincide with the display area 12, so that the brightness of the backlight received by the display area 12 can be adjusted by the light-controlling area 14.

[0044] However, during the alignment and lamination process, due to factors such as equipment precision or process accuracy, there is often a misalignment between the display liquid crystal panel 11 and the light-control liquid crystal panel 13. As a result, in an actual manufactured liquid crystal display device, the light-control region 14 and the display region 12 may be offset in parallel planes. The alignment mark in the figure is a cross, but this is not a limitation of the present disclosure. Various suitable alignment marks may be used in the embodiments of the present disclosure.

[0045] For example, Figure 1B As shown, in the liquid crystal display device 10 formed by laminating the display liquid crystal panel 11 and the light-controlling liquid crystal panel 13, due to the influence of the lamination deviation, the orthographic projection of the center C2 of the light-controlling area 14 on the display liquid crystal panel 11 does not completely overlap with the center C1 of the display area 12. The orthographic projection of the light-controlling area 14 on the display liquid crystal panel 11 can only overlap with a portion of the display area 12. That is, in the direction perpendicular to the main surface of the display liquid crystal panel 11 (or the light-controlling liquid crystal panel 13), part of the display area 12 does not overlap with the light-controlling area 14. As a result, the part of the display area 12 cannot receive the backlight adjusted by the light-controlling area 14 to perform the display operation, or receives backlight with a brightness reduced from the expected brightness, thereby reducing the actual display area of ​​the liquid crystal display device 10 and causing a loss of the display area. Therefore, in the liquid crystal display device 10, due to the loss of the display area, part of the display image will be missing, making it difficult to provide a complete display image, thereby seriously reducing the display quality and display effect of the image, and greatly reducing the reliability and stability of the product.

[0046] At least one embodiment of the present disclosure provides a display device that can reduce or avoid the loss of display area in the display device by optimizing the size design of the light control panel. Furthermore, on the basis of improving the contrast of the display image provided by the display device through the light control panel, the display effect and display quality of the image are further improved, the reliability and stability of the product are enhanced, and the user has a better viewing experience.

[0047] At least one embodiment of the present disclosure provides a display device, comprising a light control panel and a display liquid crystal panel. The display liquid crystal panel is located on the light-emitting side of the light control panel. The light control panel includes a light control area configured to provide adjusted backlight to the display liquid crystal panel. The display liquid crystal panel includes a display area configured to receive the adjusted backlight to perform display. The distance between two opposite edges of the light control area in at least one direction is greater than the distance between two opposite edges of the display area in the at least one direction.

[0048] Because the distance between two opposite edges of the light-control area in at least one direction is greater than the distance between two opposite edges of the display area in that direction, the width of the light-control area in that direction is greater than the width of the display area. As a result, after the light-control panel and the display liquid crystal panel are aligned and bonded, the area loss of the actual display area of ​​the display device due to bonding deviation can be reduced or avoided in at least that direction. Thus, while the light-control panel can more effectively control the brightness of the display image provided by the display device to improve the image contrast, it can also improve the integrity and accuracy of the display image provided by the display device, thereby improving the overall display effect and display quality, enhancing the reliability and stability of the product, and providing users with a better viewing experience.

[0049] In the display device provided by some embodiments of the present disclosure, by making the distance between the two opposite edges of the light control area in at least one direction greater than the distance between the two opposite edges of the display area in this direction, the positive projection of the display area of ​​the display liquid crystal panel on the light control panel can be located within the light control area in this direction, thereby avoiding the area loss of the actual display area of ​​the display device due to fitting deviation, ensuring the integrity and accuracy of the display picture provided by the display device, thereby significantly improving the display effect and display quality of the picture, and further enhancing the reliability and stability of the product.

[0050] Hereinafter, some embodiments of the present disclosure will be described in detail with reference to the accompanying drawings. It should be noted that the same reference numerals in different drawings will be used to refer to the same elements described.

[0051] Figure 2This is a schematic structural diagram of a display device provided in some embodiments of the present disclosure, for example, a schematic diagram of a cross-sectional structure of a display device 20 along a first direction R1.

[0052] For example, Figure 2 As shown, the display device 20 includes a display liquid crystal panel 21 and a light control panel 22, and the display liquid crystal panel 21 is located on the light-emitting side of the light control panel 22. The light control panel includes a light control area 202, and the light control area 202 is configured to provide adjusted backlight to the display liquid crystal panel 21. The display liquid crystal panel 21 includes a display area 201, and the display area 201 is configured to receive the adjusted backlight to perform display. The distance L22 between the two opposite edges 230 and 240 of the light control area 202 in the first direction R1 is greater than the distance L21 between the two opposite edges 210 and 220 of the display area 201 in the first direction R1. The first direction R1 can be any direction in the plane where the display liquid crystal panel 21 (or the light control panel 22) is located. For example, when the display area of ​​the display liquid crystal panel 21 is a rectangle, the first direction R1 can be the long side direction, the short side direction or the diagonal direction of the rectangle.

[0053] The difference between the distance L22 between the two opposite edges 230 and 240 of the light control area 202 in the first direction R1 (i.e., the width L22 of the light control area 202 in the first direction R1) and the distance L21 between the two opposite edges 210 and 220 of the display area 201 in the first direction R1 (i.e., the width L21 of the display area 201 in the first direction R1) is greater than zero, thereby reducing or avoiding the area loss of the actual display area of ​​the display device 20 due to the fitting deviation at least in the first direction R1.

[0054] For example, in Figure 2 In at least one example of the illustrated embodiment, the difference between the distance L22 between the two opposite edges 230 and 240 of the light control area 202 in the first direction R1 and the distance L21 between the two opposite edges 210 and 220 of the display area 201 in the first direction R1 is a predetermined distance, and the value of the predetermined distance is equal to twice the absolute value Xmax1 of the maximum fitting tolerance between the display liquid crystal panel 21 and the light control panel 22 in the first direction R1 when the display liquid crystal panel 21 and the light control panel 22 are bonded, that is, the value of the predetermined distance is 2×Xmax1.

[0055] It should be noted that the above-mentioned lamination tolerance refers to the range of deviation allowed due to factors such as equipment precision or process precision when aligning and laminating the display liquid crystal panel 21 and the light control panel 22, for example, using alignment marks (not shown). For example, the lamination tolerance in the first direction R1 refers to the range of deviation between the display liquid crystal panel 21 and the light control panel 22 in the first direction R1; relative to the fully aligned state, the deviation range is -Xmax1 to Xmax1. For example, the deviation range can also be understood as the offset between the orthographic projection of the center A2 of the light control area 202 on the display liquid crystal panel 21 and the center A1 of the display area 201.

[0056] For example, the specific value range of the fitting tolerance can be determined based on the size specifications of the display liquid crystal panel 21 and the light control panel 22, the fitting equipment used, the bonding process adopted, and the actual different operating environments. The range of the fitting tolerance needs to cover the maximum deviation that may be caused by errors in equipment precision, process precision, etc. when aligning and fitting the display liquid crystal panel 21 and the light control panel 22, that is, the maximum offset that may occur between the orthographic projection of the center A2 of the light control area 202 on the display liquid crystal panel 21 and the center A1 of the display area 201.

[0057] For example, Figure 2 As shown, in the display device 10, a deviation occurs after the display liquid crystal panel 21 and the light control panel 22 are bonded together, and the magnitude of the deviation in the first direction R1 is X1, that is, the magnitude of the offset in the first direction R1 between the orthographic projection of the center A2 of the light control area 202 on the display liquid crystal panel 21 and the center A1 of the display area 201 is X1. Since the width L22 of the light control area 202 in the first direction R1 is greater than the width L21 of the display area 201 in the first direction R1 and the difference is greater than 2×Xmax1, in the display device 20, the distance between the orthographic projection of the edge 210 of the display area 201 on the light control panel 22 and the edge 230 of the adjacent light control area 202 is Xmax1+X1, and the distance between the orthographic projection of the edge 220 of the display area 201 on the light control panel 22 and the edge 240 of the adjacent light control area 202 is Xmax1-X1. Since Xmax1≥X1, in the first direction R1, the orthographic projection of the display area 201 on the light control panel 22 can be located within the light control area 202, that is, in the first direction R1, the width of the actual display area of ​​the display device 20 is equal to the width of the display area 201, thereby avoiding the area loss of the actual display area of ​​the display device 20 due to the fitting deviation in the first direction R1, and improving the integrity and accuracy of the display image provided by the display device 20.

[0058] For example, in some embodiments of the present disclosure, the difference between the distance L22 between the two opposite edges 230 and 240 of the light control area 202 in the first direction R1 (i.e., the width of the light control area 202 in the first direction R1) and the distance L21 between the two opposite edges 210 and 220 of the display area 201 in the first direction R1 (i.e., the width of the display area 201 in the first direction R1) can also be greater than twice the absolute value Xmax1 of the maximum fitting tolerance between the display liquid crystal panel 21 and the light control panel 22 in the first direction R1 when the display liquid crystal panel 21 and the light control panel 22 are bonded, that is, the value of the above-mentioned predetermined distance can also be greater than 2×Xmax1, so as to further ensure the width of the actual display area of ​​the display device 20 in the first direction R1, so as to avoid area loss of the actual display area of ​​the display device 20 in the first direction R1.

[0059] For example, in actual situations, due to differences in equipment or actual operating environments, it is difficult to accurately determine the absolute value Xmax1 of the maximum fitting tolerance between the display liquid crystal panel 21 and the light control panel 22 in the first direction R1. Therefore, by making the value of the above-mentioned predetermined distance greater than 2×Xmax1, it can be further ensured that in the first direction R1, the positive projection of the display area 201 on the light control panel 22 can be located within the light control area 202, thereby more effectively avoiding the loss of the actual display area of ​​the display device 20 in the first direction R1 due to fitting deviation.

[0060] For example, Figure 2 As shown, the display liquid crystal panel 21 further includes a first light-shielding area 203 surrounding the display area 201. The orthographic projection of the first light-shielding area 203 on the light-control panel 22 at least partially overlaps with the light-control area 202 in the first direction R1. For example, the light-shielding area 203 can prevent or reduce interference from excess light to portions of the display area 201 near the edge 210 and the portion near the edge 220.

[0061] For example, Figure 2 As shown, the light control panel 22 further includes a second light shielding area 204 surrounding the light control area 202. For example, when the light control panel 22 and the display liquid crystal panel 21 have the same shape and size, the difference between the area of ​​the first light shielding area 203 and the area of ​​the second light shielding area 204 is equal to the difference between the area of ​​the light control area 202 and the area of ​​the display area 201.

[0062] For example, Figure 2As shown, the display device 20 also includes a backlight source 23. The backlight source 23 is located on a side of the light control panel 22 away from the display liquid crystal panel 21, and is configured to provide an initial backlight to the light control panel 22. The light control panel 22 adjusts the initial backlight to obtain an adjusted backlight, and provides the adjusted backlight to the display liquid crystal panel 21. As a result, the display device 20 can more effectively control the brightness of the provided display image through the light control panel 22. For example, the intensity of the transmitted light in the dark area of ​​the display image can be reduced, thereby avoiding or reducing the dark state light leakage phenomenon of the display device 20, thereby improving the contrast of the image and improving the display quality and display effect of the image.

[0063] It should be noted that the embodiments of the present disclosure do not limit the type of the backlight source 23. For example, the backlight source 23 includes multiple light sources, such as multiple linear light sources or is composed of multiple point light sources. For example, the point light source can be an LED light source, and the linear light source can be a CCFL light source, etc.; for example, the backlight source 23 can be a direct-type backlight source or an edge-type backlight source, etc., and the edge-type backlight source also includes a light guide plate; and, as needed, the backlight source 23 can also include optical functional films such as diffusion films and prism films, and the embodiments of the present disclosure do not limit this.

[0064] For example, the structure and configuration of the backlight source 23 may refer to conventional designs in the art, and the embodiments of the present disclosure are not limited thereto.

[0065] It should be noted that Figure 2 The display device 20 shown may further include other structures or film layers. For example, in at least one embodiment, the display device 20 may further include an isotropic diffusion film (IDF) or other functional film layers or structures disposed between the display liquid crystal panel 21 and the light control panel 22. The embodiments of the present disclosure are not limited to this.

[0066] It should be noted that the specific structures of the display liquid crystal panel 21 and the light control panel 22 can refer to conventional design schemes in the field, and the embodiments of the present disclosure are not limited to this. For example, the display liquid crystal panel 21 may include various components for display, such as gate lines, data lines, pixel electrodes, common electrodes, liquid crystal layers and color films; and the display liquid crystal panel 21 may be of various types, such as a vertical electric field type or a horizontal electric field type. For the horizontal electric field type, it may be an in-plane switching type (IPS), a fringe electric field switching type (FFS) or an advanced super-dimensional switch (ADS) type. The light control panel 22 may include various components for realizing light control, such as gate lines, data lines, pixel electrodes, common electrodes, liquid crystal layers, etc.; similarly, the light control panel 22 may also be of various types, such as a vertical electric field type or a horizontal electric field type. For the horizontal electric field type, it may be an in-plane switching type (IPS), a fringe electric field switching type (FFS) or an advanced super-dimensional switch (ADS) type.

[0067] For example, in the display device 20 provided in the embodiment of the present disclosure, the light control panel 22 may be a light control liquid crystal panel, or may be other types of panels with light control functions, such as an electronic ink panel or an electrochromic panel.

[0068] It should be noted that in Figure 2 In the illustrated display device 20, only the difference relationship between the distance L21 between two opposing edges 210 and 220 of the display area 201 and the distance L22 between two opposing edges 230 and 240 of the light-control area 202 in the first direction R1 is illustrated. The difference relationship between the distance between two opposing edges of the display area 201 and the distance between two opposing edges of the light-control area 202 in other directions in the display device 20 can be set with reference to the above description and will not be further described here.

[0069] For example, depending on the actual specifications of the display liquid crystal panel and the light control panel, the precision standards that can be achieved by the bonding process, and other actual situations, in the display device provided by some embodiments of the present disclosure, it is only necessary to make the width of the light control area larger than the width of the display area in one direction (for example, in the first direction R1). For example, the value greater than can be greater than or equal to 2 times the absolute value of the maximum bonding deviation in that direction, so that the orthographic projection of the display area on the light control panel can be located within the light control area. However, in the display device provided by some embodiments of the present disclosure, it is necessary to make the width of the light control area larger than the width of the display area in multiple directions (for example, including the first direction R1). For example, the value greater than can be greater than or equal to 2 times the absolute value of the maximum bonding deviation in that direction, so that the orthographic projection of the display area on the light control panel can be located within the light control area.

[0070] For example, depending on the actual specifications of the display liquid crystal panel and the light control panel, the precision standards that can be achieved by the lamination process, and other different actual situations, in the display device provided by some embodiments of the present disclosure, the difference between the width of the light control area and the width of the display area in one or more directions can be set to be equal to or slightly greater than twice the absolute value of the maximum lamination deviation in that direction, while in other directions, the difference between the width of the light control area and the width of the display area can be set to be greater than twice the absolute value of the maximum lamination deviation in that direction. In other words, the difference between the width of the light control area and the width of the display area in different directions of the display device can be determined separately, and the embodiments of the present disclosure do not limit this.

[0071] It should be noted that in the display device provided by the embodiments of the present disclosure, there are no restrictions on the shape or size of the display liquid crystal panel and the display area, or the shape or size of the corresponding light control panel and the light control area. For example, the shape and size of the display liquid crystal panel and the light control panel can be the same, or the size of the light control panel can be slightly larger than the size of the display liquid crystal panel. For example, the shape of the display area and the light control area can be the same or different.

[0072] The following example shows that the shapes of the LCD panel and the light control panel and the shapes of the display area and the light control area are both square. Figure 2 The planar structure of the display device 20 shown will be described.

[0073] Figure 3 A schematic plan view of a display device provided in some embodiments of the present disclosure, for example Figure 2 FIG. 2 is a schematic diagram of a planar structure of a display device 20 shown in FIG.

[0074] For example, combined with Figure 2 and Figure 3As shown, the difference between the distance L21 between the two opposite first display edges (i.e., edges 210 and 220) of the display area 201 in the first direction R1 and the distance L22 between the two opposite first light control edges (i.e., edges 230 and 240) of the light control area 202 in the first direction R1 is a first predetermined distance, and the value of the first predetermined distance is equal to twice the absolute value Xmax1 of the maximum fitting tolerance of the display liquid crystal panel 21 and the light control panel 22 in the first direction R1 when the display liquid crystal panel 21 and the light control panel 22 are bonded, that is, L22-L21=2×Xmax1. The difference between the distance L23 between the two opposite second display edges of the display area 201 in the second direction R2 and the distance L24 between the two opposite second light control edges of the light control area 202 in the second direction R2 is a second predetermined distance, and the value of the second predetermined distance is equal to twice the absolute value Xmax2 of the maximum fitting tolerance between the display liquid crystal panel 21 and the light control panel 22 in the second direction R2 when the display liquid crystal panel 21 and the light control panel 22 are bonded, that is, L24-L23=2×Xmax2.

[0075] For example, combined with Figure 2 and Figure 3 As shown, after the display liquid crystal panel 21 and the light control panel 22 in the display device 20 are bonded together, a deviation occurs, and the deviation in the first direction R1 is X1, and the deviation in the second direction R2 is X2. That is, the offset between the orthographic projection of the center A2 of the light control area 202 on the display liquid crystal panel 21 and the center A1 of the display area 201 in the first direction R1 is X1, and the offset in the second direction R2 is X2. Since the width L22 of the light control area 202 in the first direction R1 is greater than the width L21 of the display area 201 in the first direction R1 and the difference is greater than 2×Xmax1, in the display device 20, the distance between the orthographic projection of the edge 210 of the display area 201 on the light control panel 22 and the edge 230 of the adjacent light control area 202 is Xmax1+X1, and the distance between the orthographic projection of the edge 220 of the display area 201 on the light control panel 22 and the edge 240 of the adjacent light control area 202 is Xmax1-X1. Accordingly, since the width L24 of the light control area 202 in the second direction R2 is greater than the width L23 of the display area 201 in the second direction R2 and the difference is greater than 2×Xmax2, in the display device 20, the distances between the two opposite edges of the display area 201 in the second direction R2 and the two opposite edges of the adjacent light control area 202 in the second direction R2 are Xmax2+X2 and Xmax2-X2, respectively.

[0076] Since Xmax1 ≥ X1 and Xmax2 ≥ X2, the orthographic projection of the display area 201 on the light control panel 22 in both the first direction R1 and the second direction R2 can be located within the light control area 202. That is, the orthographic projection of the display area 201 on the light control panel 22 is located within the light control area 202. Therefore, in both the first direction R1 and the second direction R2, the width of the actual display area of ​​the display device 20 is equal to the width of the display area 201, thereby avoiding the area loss of the actual display area of ​​the display device 20 due to lamination deviation, ensuring the integrity and accuracy of the display image provided by the display device 20, thereby significantly improving the display effect and display quality, and further enhancing the reliability and stability of the product.

[0077] For example, in Figure 3 In the illustrated embodiment, the display area 201 and the light-control area 202 are shaped as a square, i.e., the first direction R1 is perpendicular to the second direction R2. In other embodiments of the present disclosure, the display area 201 and the light-control area 202 may be shaped as a trapezoid or a diamond, for example, and the angular relationship between the first direction R1 and the second direction R2 may be adjusted accordingly.

[0078] For example, in some embodiments of the present disclosure, the difference between the distance between the two opposite edges of the light control area 202 in the first direction R1 (i.e., the width L22 of the light control area 202 in the first direction R1) and the distance between the two opposite edges of the display area 201 in the first direction R1 (i.e., the width L21 of the display area 201 in the first direction R1) can also be greater than twice the absolute value Xmax1 of the maximum fitting tolerance between the display liquid crystal panel 21 and the light control panel 22 in the first direction R1 when the display liquid crystal panel 21 and the light control panel 22 are bonded, that is, L22-L21>2×Xmax1. The difference between the distance between two opposing edges of the light-control area 202 in the second direction R2 (i.e., the width L24 of the light-control area 202 in the second direction R2) and the distance between two opposing edges of the display area 201 in the second direction R2 (i.e., the width L23 of the display area 201 in the second direction R2) can also be greater than twice the absolute value Xmax2 of the maximum lamination tolerance between the display liquid crystal panel 21 and the light-control panel 22 in the second direction R2 when the display liquid crystal panel 21 and the light-control panel 22 are laminated together, i.e., L24-L23>2×Xmax2. Thus, the width of the actual display area of ​​the display device 20 in the first direction R1 and the second direction R2 can be further guaranteed, thereby avoiding loss of area of ​​the actual display area of ​​the display device 20.

[0079] For example, in actual situations, due to differences in equipment or actual operating environments, it is difficult to accurately determine the absolute value Xmax1 of the maximum lamination tolerance between the display liquid crystal panel 21 and the light control panel 22 in the first direction R1 and the absolute value Xmax2 of the maximum lamination tolerance in the second direction R2. Therefore, by setting the values ​​of the first predetermined distance and the second predetermined distance to be greater than 2×Xmax1 and 2×Xmax2, respectively, it is possible to further ensure that the orthographic projection of the display area 201 on the light control panel 22 is located within the light control area 202, thereby more effectively avoiding the loss of the actual display area of ​​the display device 20 due to lamination deviation.

[0080] For example, in some embodiments of the present disclosure, the light control panel includes a light control pixel array configured to adjust backlight incident on the light control panel so that the light control panel provides the adjusted backlight to the display liquid crystal panel. The light control pixel array is at least located in the light control area.

[0081] For example, in some embodiments of the present disclosure, a display area of ​​a display liquid crystal panel includes a plurality of display pixel units arranged in an array, such as a display pixel array. For example, the display device adjusts the brightness of backlight received by the plurality of display pixel units in the display pixel array in a region by region using a light control pixel array located in a light control region.

[0082] Below is Figure 2 and Figure 3 Taking the structure of the display device 20 shown as an example, the structural design of the light control pixel array in the display device 20 is described.

[0083] Figure 4 A schematic diagram of a light control pixel array and a display pixel array in a display device provided in some embodiments of the present disclosure, for example Figure 2 and Figure 3 FIG. 1 is a schematic diagram of a light-control pixel array and a display pixel array in a display device 20 .

[0084] For example, combined with Figure 3 and Figure 4 As shown, the display area 201 of the display device 20 includes a plurality of display pixel units 410 arranged in an array. The light control pixel array of the display device 20 includes a plurality of light control pixel units 420 arranged in an array.

[0085] For example, in the light control panel 22 of the display device 20, the second light shielding area 204 at least partially shields the light control pixel units 420 of the light control pixel array located at the edge of the light control area 202 in the first direction R1 and the second direction R2 to form the light control area 202. Figure 4As shown, a portion of the light-control pixel units 420 at the edges of the light-control pixel array in the first direction R1 and the second direction R2 is located in the light-control area 202 , and a portion is blocked by the second light-shielding area 204 .

[0086] For example, in Figure 3 and Figure 4 In the display device 20 shown, the first light-shielding area (not shown) of the display liquid crystal panel 21 blocks the portion of the display liquid crystal panel 21 other than the display area 201. For example, the first light-shielding area can block the portion of the light-control area 202 that does not overlap with the display area 201 in a direction perpendicular to the main surface of the display liquid crystal panel 21, thereby avoiding the light-control pixel unit 420 located in this partial area from interfering with the brightness of the backlight received by the display pixel unit 410 in the display area 201.

[0087] For example, in the actual display area of ​​the display device 20, each light-control pixel unit 420 corresponds to multiple display pixel units 410 in a portion of the display area 201, so that the brightness of the backlight received by the display pixel units 410 in the display area 201 can be adjusted in different areas.

[0088] For example, in Figure 4 In the illustrated embodiment, the plurality of light-control pixel units 420 in the light-control pixel array all have the same structural design, thereby reducing the manufacturing cost and difficulty of the manufacturing process of the display device 20. For example, the number of light-control pixel units 420 can be determined based on the width L22 of the light-control region 202 in the first direction R1 and the width L24 in the second direction R2, so that the size of the light-control pixel array in the first direction R1 is equal to or slightly larger than L22 and the size in the second direction R2 is equal to or slightly larger than L24. For example, the portion of the light-control pixel array located outside the light-control region 202 can be shielded by, for example, a black matrix (or light-shielding layer) provided in the second light-shielding region 204, thereby forming the light-control region 202.

[0089] Figure 5 A schematic diagram of a light control pixel array and a display pixel array in another display device provided in some embodiments of the present disclosure, for example Figure 2 and Figure 3 FIG. 1 is a schematic diagram of a light-control pixel array and a display pixel array in a display device 20 .

[0090] For example, combined with Figure 3 and Figure 5As shown, the display area 201 of the display device 20 includes a plurality of display pixel units 410 arranged in an array. The light-control pixel array is located in the light-control area 202 and includes edge light-control pixel units 430 and central light-control pixel units 440. The edge light-control pixel units 430 are arranged along the edge of the light-control area 202 and surround the central light-control pixel units 440. In at least one direction, for example, in the first direction R1 or the second direction R2, the size of the edge light-control pixel units 430 is different from the size of the central light-control pixel units 440.

[0091] For example, compared to Figure 4 The light control pixel array shown in Figure 5 The edge light-control pixel units 430 and the middle light-control pixel units 440 in the light-control pixel array shown in FIG have different structural designs, thereby making the size of the light-control pixel array in the first direction R1 and the size in the second direction R2 equal to the width L22 in the first direction R1 and the width L24 in the second direction R2 of the light-control region 202, respectively. As a result, there is no need to set up a light-control pixel array in the second light-shielding region 204 of the display device 20, thereby allowing for more flexible adjustment and optimization of the structural design and area size of the second light-shielding region 204.

[0092] For example, in Figure 5 In the display device 20 shown, the size of the edge light-control pixel units 430 along the edge of the light-control area 202 in the first direction R1 in the second direction R2 is different from the size of the central light-control pixel unit 440 in the second direction R2, and can be, for example, slightly larger than the size of the central light-control pixel unit 440 in the second direction R2. The size of the edge light-control pixel units 430 along the edge of the light-control area 202 in the second direction R2 in the first direction R1 is different from the size of the central light-control pixel unit 440 in the first direction R1, and can be, for example, slightly smaller than the size of the central light-control pixel unit 440 in the first direction R1.

[0093] It should be noted that in Figure 5 In the display device 20 shown, the size relationship between the edge light-control pixel units 430 and the central light-control pixel units 440 located at different positions in the first direction R1 and the second direction R2 is merely illustrative. For example, in other embodiments of the present disclosure, the size relationship between the edge light-control pixel units 430 and the central light-control pixel units 440 in the first direction R1 and the second direction R2 can be set based on the widths of the display area 201 and the light-control area 202 in the first direction R1 and the second direction R2, and the embodiments of the present disclosure are not limited to this.

[0094] It should be noted that in Figure 5In the display device 20 shown, the design structure of the edge light-control pixel unit 430 is only an example. In some other embodiments of the present disclosure, the design structure of the edge light-control pixel unit 430 can be set according to, for example, the contour shape and size of the light-control area 202, and the embodiments of the present disclosure do not limit this.

[0095] For example, Figure 4 The light control pixel unit 420 and Figure 5 The specific structure and arrangement of the edge light-control pixel unit 430 and the middle light-control pixel unit 440 shown in FIG. 4 may refer to conventional designs in the art, and the embodiments of the present disclosure are not limited thereto.

[0096] It should be noted that Figure 4 and Figure 5 The light-control pixel array and display pixel array shown in the figure are merely exemplary. For example, the embodiments of the present disclosure do not limit the number, specific structure, and arrangement of the light-control pixel units in the light-control pixel array and the display pixel units in the display pixel array.

[0097] For example, in the display device provided in some embodiments of the present disclosure, Figure 4 and Figure 5 Taking the display device 20 shown as an example, the absolute values ​​Xmax1 and Xmax2 of the maximum lamination tolerances of the display liquid crystal panel 21 and the light control panel 22 in the first direction R1 and the second direction R2 are generally smaller than the dimensions of the display pixel unit 410 in the first direction R1 and the second direction R2, respectively. Therefore, even if there is a lamination deviation between the display liquid crystal panel 21 and the light control panel 22, there will be no abnormal correspondence between the light control pixel units (e.g., the light control pixel unit 420, the edge light control pixel unit 430, and the center light control pixel unit 440) in the display device 20 and the display pixel unit 410, thereby ensuring normal display of the image on the display device 20.

[0098] It should be noted that, in the display device provided by the embodiment of the present disclosure, each display pixel unit of the display liquid crystal panel includes at least one sub-pixel unit, that is, includes at least one sub-pixel, for example Figure 4 and Figure 5 , each display pixel unit 410 includes three sub-pixel units, and the three sub-pixel units are arranged in parallel along the first direction R1. The present disclosure does not limit the specific number and arrangement of sub-pixel units provided in each display pixel unit. The structure and function of the display pixel unit can refer to conventional designs in the art and will not be described in detail here.

[0099] For example, in the display devices provided in some embodiments of the present disclosure, according to the needs of different actual situations, in the case where the absolute value of the fitting tolerance of the display device in at least one direction is greater than or equal to the size of the display pixel unit in this direction, since there is generally no grayscale mutation in the display picture, for example, under normal circumstances, the backlight brightness corresponding to adjacent display pixel units is basically the same or similar. Therefore, even if there is a slight corresponding abnormality between the light-control pixel unit and the display pixel unit in the display device, the display device can still provide a relatively normal display picture.

[0100] For example, in the display devices provided in some embodiments of the present disclosure, based on the value of the maximum bonding tolerance commonly present in the current bonding process, the minimum value range of the difference between the distance between two opposite edges of the light control area in at least one direction and the distance between two opposite edges of the display area in the at least one direction can be, for example, 400 to 600 microns, and further can be 200 to 400 microns.

[0101] For example, in the display devices provided in some embodiments of the present disclosure, since the specific value range of the fitting tolerance needs to be determined based on conditions such as the size specifications of the display liquid crystal panel and the light control panel, the bonding equipment used, the bonding process adopted, and the actual different operating environments, therefore, in situations where it is relatively difficult to accurately determine the value of the maximum fitting tolerance, the size relationship between the display liquid crystal panel and the light control panel can also be set according to the size of the display pixel unit in the display liquid crystal panel.

[0102] For example, in the display device provided in some embodiments of the present disclosure, the display area includes a plurality of display pixel units arranged in an array, and the difference between the distance between two opposite edges of the light control area in at least one direction and the distance between two opposite edges of the display area in the at least one direction is a predetermined distance, and the value of the predetermined distance is greater than or equal to the size of the display pixel unit in at least one direction.

[0103] For example, for a 61-inch square display device, the width of a display pixel unit is typically 372 microns. Accordingly, the difference between the distance between two opposite edges of the light-control area in the width direction and the distance between two opposite edges of the display area in the width direction can be set to be greater than or equal to 372 microns or 370 microns. For example, for a 55-inch square display device, the width of a display pixel unit is typically 315 microns. Accordingly, the difference between the distance between two opposite edges of the light-control area in the width direction and the distance between two opposite edges of the display area in the width direction can be set to be greater than or equal to 315 microns or 320 microns.

[0104] For example, the light control panel in the display device provided by the embodiment of the present disclosure may be a light control liquid crystal panel or other panel with light control function. The display device provided by the embodiment of the present disclosure may be a liquid crystal display device or other device with display function.

[0105] For example, in the display device provided in some embodiments of the present disclosure, the light control panel further includes a first gate drive circuit, the first gate drive circuit being located within the second light-shielding region and located on at least one side of the light control region. The first gate drive circuit includes a plurality of cascaded first shift register units, the plurality of first shift register units being electrically connected to a plurality of rows of light control pixel units in the light control pixel array to provide a first gate drive signal. The first shift register unit includes a first transistor, and the first transistor includes two rows of active layers arranged in parallel.

[0106] Since the sizes of transistors that play the same or similar roles (such as output transistors, input transistors, reset transistors, etc.) in the shift register units of the light control panel and the display liquid crystal panel are basically the same, for example, the length and width of the transistors are basically the same, therefore, by arranging the active layer of the first transistor in the first shift register unit of the light control panel into two rows and connecting the source and drain of the first transistor in series, the sizes occupied by the first shift register unit in different directions can be adaptively adjusted according to different actual needs, thereby optimizing the layout design within the second shading area of ​​the light control panel, and simplifying the preparation process of the display device.

[0107] For example, Figure 3 Taking the display device 20 shown in FIG. 1 as an example, the active layer of the first transistor in the first shift register unit in the second light shielding area 204 of the light control panel 22 includes the following: Figure 6 The two rows of active layers AL shown are arranged in parallel along the second direction R2. Each row of active layers AL includes a plurality of U-shaped structures arranged in parallel along the first direction R1 and connected to each other. The two rows of active layers AL are connected in series via, for example, the source electrode SE and the drain electrode DE of the first transistor, thereby reducing the size of the first shift register unit in the first direction R1. Therefore, when the width of the second light-shielding region 204 in the first direction R1 is smaller than the width of the first light-shielding region 203 in the first direction R1, by reducing the size of the first shift register unit in the first direction R1 and increasing the size of the first shift register unit in the second direction R2, the layout structure within the second light-shielding region 204 of the light-control panel 22 can be optimized, thereby simplifying the manufacturing process of the display device 20.

[0108] For example, in some embodiments of the present disclosure, the first shift register unit may further include a plurality of transistors that arrange the active layer into two rows, so that the size occupied by the first shift register unit in different directions can be further adaptively adjusted to optimize the layout design within the second shading area of ​​the light control panel.

[0109] Figure 7 A circuit diagram of a specific implementation example of a first shift register unit provided in some embodiments of the present disclosure.

[0110] For example, Figure 7 As shown, the first shift register unit 500 includes an output circuit 510 , an output reset circuit 520 , an input circuit 530 and a noise reduction circuit 540 .

[0111] For example, the input circuit 530 includes a third transistor M3. A gate of the third transistor M3 is connected to a first electrode and is configured to be connected to the input terminal INT to receive an input signal. A second electrode of the third transistor M3 is configured to be connected to the first node N1. The third transistor M3 is configured to write the input signal to the first node N1 in response to the input signal to control the level of the first node N1.

[0112] For example, the output circuit 510 includes a first transistor M1, and the first transistor M1 includes two rows of active layers arranged in parallel, for example Figure 6 As shown, two rows of active layers AL are connected in series, for example, through a source electrode SE and a drain electrode DE. The gate of the first transistor M1 is connected to the first node N1, the first electrode of the first transistor M1 is connected to the clock signal terminal CLK to receive the clock signal, and the second electrode of the first transistor M1 is connected to the output terminal OUTP. For example, the first transistor M1 is configured to receive the clock signal and output the clock signal to the output terminal OUTP as a first gate drive signal under the control of the level of the first node N1.

[0113] For example, the output circuit 510 further includes a first capacitor C1. A first electrode of the first capacitor C1 is configured to be connected to the first node N1, and a second electrode of the first capacitor C1 is configured to be connected to the output terminal OUTP.

[0114] For example, the output reset circuit 520 includes a second transistor M2, and the second transistor M2 includes two rows of active layers arranged in parallel, for example, Figure 6 As shown, two rows of active layers AL are connected in series, for example, through a source electrode SE and a drain electrode DE. The gate of the second transistor M2 is connected to the reset terminal RST to receive a reset signal, the first electrode of the second transistor M2 is connected to the output terminal OUTP, and the second electrode of the second transistor M2 is connected to the first voltage terminal VSS (for example, providing a low-level voltage). The second transistor M2 is configured to apply, for example, a low-level voltage to the output terminal OUTP in response to the reset signal to reset the output terminal OUTP.

[0115] For example, the noise reduction circuit 540 includes a fourth transistor M4. A gate of the fourth transistor M4 is connected to a reset terminal RST to receive a reset signal, a first electrode of the fourth transistor M4 is connected to a first node N1, and a second electrode of the fourth transistor M4 is connected to a first voltage terminal VSS. The fourth transistor M4 is configured to apply, for example, a low-level voltage to the first node N1 in response to the reset signal to perform noise reduction.

[0116] For example, in the above example, the first transistor M1 is a transistor that plays an output role in the output circuit 510, that is, an output transistor; the second transistor M2 is a transistor that plays a reset output role in the output reset circuit 520, that is, an output reset transistor. Generally, in order to ensure the charging rate, the size of the active layer of the output transistor or output reset transistor in the first shift register unit 500 is often large. In the case of using a single-row active layer, the size of the first shift register unit 500 in a certain direction may be large. For example, Figure 3 Taking the display device 20 shown as an example, when the active layer of the output transistor or the output reset transistor is arranged in a single row along the first direction R1, the first shift register unit 500 may need to occupy more space in the second light-shielding area 204 in the first direction R1. For example, the channel length of the output transistor (i.e., the first transistor M1) can be several thousand microns, while the size of the output transistor in a large-size, high-resolution television product may even be greater than 10,000 microns. Moreover, since the output reset transistor (i.e., the second transistor M2) is used for discharge, the size of the active layer of the output reset transistor is often larger. Therefore, using the first transistor M1 and the second transistor M2 comprising two rows of active layers arranged in parallel as the output transistor and the output reset transistor, respectively, can optimize the layout structure in the second light-shielding area of ​​the light control panel, thereby simplifying the manufacturing process of the display device.

[0117] It should be noted that Figure 7 The circuit structure of 4T1C shown is only an example. In other embodiments of the present disclosure, the first shift register unit of the light control panel may also adopt other types of circuit structures, such as 6T1C, 17T1C, 19T1C, etc. The embodiments of the present disclosure are not limited to this.

[0118] It should be noted that in Figure 7 In the first shift register unit 500 shown, the first transistor and the second transistor including two rows of active layers arranged in parallel are respectively an output transistor and an output reset transistor. In some other embodiments of the present disclosure, according to different actual needs, the active layers of other transistors in the circuit structure can also be set to two rows and connected in series through the source and drain of the transistor. The embodiments of the present disclosure are not limited to this.

[0119] It should be noted that the first capacitor C1 can be a capacitor device manufactured through a process, for example, a capacitor device can be realized by making special capacitor electrodes. The various electrodes of the capacitor can be realized by metal layers, semiconductor layers (such as doped polysilicon), etc., and the first capacitor C1 can also be a parasitic capacitance between transistors, which can be realized by the transistor itself and other devices and circuits.

[0120] It should be noted that the first node N1 does not represent an actual component, but represents a junction point of related electrical connections in the circuit diagram.

[0121] It should be noted that the transistors used in the first shift register unit 500 can all be thin film transistors, field effect transistors or other switching devices with the same characteristics. The embodiments of the present disclosure are described using thin film transistors as an example. The source and drain of the transistors used here can be symmetrical in structure, so their source and drain can be structurally indistinguishable. In the embodiments of the present disclosure, in order to distinguish the two poles of the transistor other than the gate (i.e., the source and drain), one of the poles is directly described as the first pole and the other pole is the second pole. The transistors in the embodiments of the present disclosure are all described using N-type transistors as an example. In this case, the first pole of the transistor is the drain and the second pole is the source. It should be noted that the present disclosure includes but is not limited to this. For example, one or more transistors in the shift register unit 500 provided in the embodiments of the present disclosure can also be P-type transistors. In this case, the first pole of the transistor is the source and the second pole is the drain. It is only necessary to connect the poles of the selected type of transistor accordingly with reference to the poles of the corresponding transistor in the embodiments of the present disclosure, and to enable the corresponding voltage terminals to provide corresponding high voltages or low voltages. When using N-type transistors, indium gallium zinc oxide (IGZO) can be used as the active layer of the thin film transistor. Compared with using low temperature polysilicon (LTPS) or amorphous silicon (such as hydrogenated amorphous silicon) as the active layer of the thin film transistor, it can effectively reduce the size of the transistor and prevent leakage current.

[0122] For example, in the display device provided in some embodiments of the present disclosure, the display liquid crystal panel further includes a second gate drive circuit, the second gate drive circuit being located within the first light-shielding region and located on at least one side of the display region. The second gate drive circuit includes a plurality of cascaded second shift register units, each of which is electrically connected to a plurality of rows of display pixel units in the display region to provide a second gate drive signal. The number of transistors included in the first shift register unit is greater than the number of transistors included in the second shift register unit.

[0123] Since the sizes of transistors that play the same or similar roles (such as output transistors, input transistors, reset transistors, etc.) in the shift register units of the light control panel and the display liquid crystal panel are basically the same, for example, the length and width of the transistors are basically the same, therefore, when the number of transistors included in the first shift register unit is large, arranging the active layers of one or more transistors in the first shift register unit into two rows can make the sizes of the first shift register unit and the second shift register unit in a certain direction basically consistent, and then the layout design of the display device can be optimized according to different actual needs, thereby simplifying the manufacturing process of the display device.

[0124] For example, in the display device provided in some embodiments of the present disclosure, the first shift register unit of the light control panel may adopt a 19T1C circuit structure, and the second shift register unit of the display liquid crystal panel may adopt a 17T1C circuit structure.

[0125] For example, in the display devices provided in some embodiments of the present disclosure, the row height of the first shift register unit of the light-control panel is smaller than the row height of a row of light-control pixel units. That is, along the arrangement direction of the two rows of active layers of the first transistors, the size occupied by the first shift register unit is smaller than the row height of a row of light-control pixel units. The first shift register unit is electrically connected to a corresponding row of light-control pixel units via a signal line, and the signal line is a zigzag line.

[0126] Figure 8A A schematic diagram of a connection between a first shift register unit and a light-control pixel unit of a first gate driving circuit provided in some embodiments of the present disclosure is provided. Figure 8B A schematic diagram of a connection method between a second shift register unit of a second gate driving circuit and a display pixel unit provided in some embodiments of the present disclosure.

[0127] For example, Figure 4 As an example, the display device 20 shown in FIG. Figure 4 and Figure 8A As shown, the first gate drive circuit of the light control panel 22 includes a plurality of cascaded first shift register units (e.g., the Nth row, the N+1th row, the N+2th row, the N+3th row, the N+4th row of first shift register units, etc., where N is an integer greater than 0). The plurality of rows of first shift register units are respectively electrically connected to the plurality of rows of light control pixel units in the light control pixel array (e.g., the Nth row, the N+1th row, the N+2th row, the N+3th row, the N+4th row of light control pixel units, etc.) to provide a first gate drive signal. For example, the Nth row of first shift register units is electrically connected to the Nth row of light control pixel units to provide the first gate drive signal required by the Nth row of light control pixel units.

[0128] It should be noted that Figure 8AThe cascade relationship between multiple first shift register units is not shown. The specific cascade method between the upper and lower rows of first shift register units can refer to the conventional design in the art, and the embodiments of the present disclosure do not limit this.

[0129] For example, the row height H1 of the first shift register unit in the Nth row of the light control panel 22 (i.e., the size occupied by the first shift register unit in the Nth row in the second direction R2) is less than the row height H2 of the light control pixel unit in the Nth row, that is, H1 < H2. Therefore, the signal line L10 connecting the first shift register unit in the Nth row and the light control pixel unit in the Nth row needs to be zigzag, for example, extending in a serpentine shape.

[0130] For example, at least one bending point of the signal line L10 can be set to a right angle, thereby weakening the influence of process fluctuations during the preparation process, optimizing the preparation process of the light control panel 22, and improving the stability of the prepared light control panel 22. Or, in some other embodiments of the present disclosure, according to different actual layout requirements, the bending point of the signal line L10 can also be set to other angles, or the signal line L10 can also be set to other suitable shapes, and the embodiments of the present disclosure do not limit this.

[0131] For example, the sizes occupied by multiple signal lines connecting multiple rows of first shift register units and multiple rows of light control pixel units in the first direction R1 are substantially the same, that is, the lengths of each row of signal lines in the first direction R1 are substantially the same as each other. For example, taking the signal line L10 in the Nth row as an example, the length of the signal line L10 in the Nth row in the first direction R1 is L101.

[0132] For example, in combination with Figure 4 and Figure 8B as shown, the second gate driving circuit of the display liquid crystal panel 21 includes multiple cascaded second shift register units (for example, the second shift register units in the Mth row, the M + 1th row, the M + 2th row, the M + 3th row, the M + 4th row, etc., where M is an integer greater than 0), and multiple rows of second shift register units are respectively electrically connected to multiple rows of display pixel units in the display pixel array (for example, the display pixel units in the Mth row, the M + 1th row, the M + 2th row, the M + 3th row, the M + 4th row, etc.) to provide the second gate driving signal. For example, the second shift register unit in the Mth row is electrically connected to the display pixel unit in the Mth row to provide the second gate driving signal required for the display pixel unit in the Mth row.

[0133] It should be noted that Figure 8B the cascade relationship between multiple second shift register units is not shown. The specific cascade method between the upper and lower rows of second shift register units can refer to the conventional design in the art, and the embodiments of the present disclosure do not limit this.

[0134] For example, the row height H3 of the second shift register unit in the Mth row of the display liquid crystal panel 21 (i.e., the size occupied by the second shift register unit in the Mth row in the second direction R2) is equal to the row height H4 of the display pixel unit in the Mth row, i.e., H3=H4, so the signal line L20 connecting the second shift register unit in the Mth row and the display pixel unit in the Mth row can extend in a straight line.

[0135] At least one embodiment of the present disclosure further provides a light control panel, comprising a light control region. The light control panel is configured to provide regulated backlight to a display liquid crystal panel located on a light-emitting side of the light control panel. The display liquid crystal panel includes a display region, which is configured to receive the regulated backlight for display. The distance between two opposing edges of the light control region in at least one direction is greater than the distance between two opposing edges of the display region in the at least one direction.

[0136] In at least one embodiment of the present disclosure, the distance between two opposite edges of the light control area of ​​the light control panel in at least one direction is greater than the distance between two opposite edges of the display area in the same direction. That is, the width of the light control area of ​​the light control panel in at least one direction is greater than the width of the display area. Therefore, after the light control panel is aligned and bonded to the corresponding display liquid crystal panel, the area loss of the actual display area of ​​the display liquid crystal panel due to bonding deviation can be reduced or avoided in at least one direction. As a result, while the brightness of the display image on the display liquid crystal panel is more effectively controlled by the light control panel to improve the image contrast, the integrity and accuracy of the display image on the display liquid crystal panel can be improved, thereby improving the overall display effect and display quality of the image, enhancing the reliability and stability of the product, and providing users with a better viewing experience.

[0137] For example, in the light control panel provided in at least one embodiment of the present disclosure, the difference between the distance between two opposite edges of the light control area in at least one direction and the distance between two opposite edges of the display area in at least one direction is a predetermined distance, and the value of the predetermined distance is greater than or equal to twice the absolute value of the maximum fitting tolerance of the display liquid crystal panel and the light control panel in at least one direction when the display liquid crystal panel and the light control panel are bonded.

[0138] For example, in the light control panel provided in at least one embodiment of the present disclosure, the distance between two opposite edges of the light control area in any direction is greater than the distance between two opposite edges of the display area in any direction. Therefore, after the light control panel is aligned and bonded to the corresponding display liquid crystal panel, the orthographic projection of the display area of ​​the display liquid crystal panel on the light control panel can be located within the light control area, thereby avoiding the area loss of the actual display area of ​​the display liquid crystal panel due to bonding deviation, ensuring the integrity and accuracy of the provided display image, thereby significantly improving the display effect and display quality of the image, and further enhancing the reliability and stability of the product.

[0139] For example, the specific structure and function of the light control panel provided in the embodiment of the present disclosure can refer to the description of the light control panel in the display device provided in the embodiment of the present disclosure, for example, the description of the light control panel 22 in the embodiment of the above-mentioned display device 20 can be referred to, and will not be repeated here.

[0140] At least one embodiment of the present disclosure further provides a method for preparing a display device, the method comprising: providing a light control panel and a display liquid crystal panel; and aligning and bonding the light control panel and the display liquid crystal panel. The light control panel includes a light control area, which is configured to provide adjusted backlight to the display liquid crystal panel. The display liquid crystal panel includes a display area, which is configured to receive the adjusted backlight to perform display. The distance between two opposite edges of the light control area in at least one direction is greater than the distance between two opposite edges of the display area in at least one direction. The display liquid crystal panel is located on the light-emitting side of the light control panel.

[0141] For example, in the preparation method provided in at least one embodiment of the present disclosure, aligning and laminating the light control panel and the display liquid crystal panel includes: making the orthographic projection of the display area on the light control panel located within the light control area.

[0142] For example, in the preparation method provided in at least one embodiment of the present disclosure, the difference between the distance between two opposite edges of the light control area in at least one direction and the distance between two opposite edges of the display area in at least one direction is a predetermined distance, and the value of the predetermined distance is greater than or equal to twice the absolute value of the maximum fitting tolerance of the alignment in the above-mentioned at least one direction.

[0143] The specific description and effects of the manufacturing method of the display device provided by the embodiment of the present disclosure can refer to the corresponding content in the display device provided by the embodiment of the present disclosure, for example, the corresponding content in the embodiment of the above-mentioned display device 20 can be referred to, and will not be repeated here.

[0144] At least one embodiment of the present disclosure further provides an electronic device, which includes any display device provided in the embodiments of the present disclosure, for example, the display device 20 in the above embodiment.

[0145] For example, the electronic device can be any product or component with a display function, such as a display substrate, display panel, electronic paper, mobile phone, tablet computer, television, monitor, laptop computer, digital photo frame, navigator, etc., and the embodiments of the present disclosure are not limited to this.

[0146] There are a few points to note:

[0147] (1) The drawings of the embodiments of the present disclosure only relate to the structures related to the embodiments of the present disclosure. Other structures may refer to conventional designs.

[0148] (2) For the sake of clarity, the thickness of layers or regions in the drawings used to describe the embodiments of the present disclosure are exaggerated or reduced, i.e., these drawings are not drawn to scale. It is understood that when an element such as a layer, film, region, or substrate is referred to as being "on" or "under" another element, the element may be "directly" "on" or "under" the other element, or intervening elements may be present.

[0149] (3) In the absence of conflict, the embodiments of the present disclosure and the features therein may be combined with each other to form new embodiments.

[0150] The above description is merely a specific embodiment of the present disclosure, but the scope of protection of the present disclosure is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in this disclosure should be included in the scope of protection of the present disclosure. Therefore, the scope of protection of the present disclosure should be based on the scope of protection of the claims.

Claims

1. A display device, comprising a light control panel and a display liquid crystal panel, in, The display liquid crystal panel is located on the light emitting side of the light control panel; The light control panel includes a light control area, and the light control area is configured to provide adjusted backlight to the display liquid crystal panel; The display liquid crystal panel includes a display area configured to receive the adjusted backlight to perform display; and The distance between two opposite edges of the light control area in at least one direction is greater than the distance between two opposite edges of the display area in at least one direction; The display liquid crystal panel further comprises a first light shielding area surrounding the display area, wherein an orthographic projection of the first light shielding area on the light control panel at least partially overlaps with the light control area in at least one direction; The light control panel comprises a light control pixel array, the light control pixel array is configured to adjust the backlight incident on the light control panel so that the light control panel provides the adjusted backlight to the display liquid crystal panel, and the light control pixel array is at least located in the light control area; The light control panel further includes a second light shielding area surrounding the light control area, and the light control pixel array includes a plurality of light control pixel units arranged in an array; The second light shielding area at least partially shields the light control pixel units at the edge of the light control pixel array in the at least one direction; The difference between the distance between two opposite edges of the light control area in at least one direction and the distance between two opposite edges of the display area in at least one direction is a predetermined distance, The value of the predetermined distance is greater than or equal to twice the absolute value of the maximum fitting tolerance between the display liquid crystal panel and the light control panel in at least one direction; The display area includes a plurality of display pixel units arranged in an array, and an absolute value of the maximum fitting tolerance in at least one direction is smaller than a size of the display pixel unit in the at least one direction.

2. The display device according to claim 1, wherein: The orthographic projection of the display area on the light control panel is located within the light control area.

3. The display device according to claim 1, wherein: The at least one direction includes a first direction and a second direction, the first direction being different from the second direction; The difference between the distance between two opposite first display edges of the display area in the first direction and the distance between two opposite first light-controlling edges of the light-controlling area in the first direction is a first predetermined distance, and the value of the first predetermined distance is greater than or equal to twice the absolute value of the maximum lamination tolerance between the display liquid crystal panel and the light-controlling panel in the first direction; The difference between the distance between two opposite second display edges of the display area in the second direction and the distance between two opposite second light control edges of the light control area in the second direction is a second predetermined distance, and the value of the second predetermined distance is greater than or equal to twice the absolute value of the maximum fitting tolerance between the display liquid crystal panel and the light control panel in the second direction.

4. The display device according to claim 1, wherein: The difference between the distance between two opposite edges of the light control area in at least one direction and the distance between two opposite edges of the display area in at least one direction is a predetermined distance, The display area includes a plurality of display pixel units arranged in an array, and a value of the predetermined distance is greater than or equal to a size of the display pixel unit in at least one direction.

5. The display device according to any one of claims 1 to 3, wherein: The light control panel further includes a first gate driving circuit; The first gate driving circuit is located in the second light shielding area and at least on one side of the light control area. The first gate driving circuit includes a plurality of cascaded first shift register units, and the plurality of first shift register units are respectively electrically connected to a plurality of rows of light-control pixel units in the light-control pixel array to provide a first gate driving signal; The first shift register unit includes a first transistor, and the first transistor includes two rows of active layers arranged in parallel.

6. The display device according to claim 5, wherein: The first shift register unit includes an input circuit, an output circuit and an output reset circuit; The input circuit is electrically connected to the first node and configured to write the input signal into the first node in response to an input signal to control the level of the first node; The output circuit is electrically connected to the first node and the output terminal, and is configured to receive a clock signal and output the clock signal to the output terminal as the first gate driving signal under the control of the level of the first node; The output reset circuit is electrically connected to the output terminal and is configured to reset the output terminal in response to a reset signal; The output circuit includes the first transistor.

7. The display device according to claim 6, wherein: The output reset circuit includes a second transistor, The second transistor includes two rows of active layers arranged in parallel.

8. The display device according to claim 7, wherein: The gate of the first transistor is connected to the first node, the first electrode of the first transistor is connected to the clock signal terminal to receive the clock signal, and the second electrode of the first transistor is connected to the output terminal; The gate of the second transistor is connected to the reset terminal to receive the reset signal, the first electrode of the second transistor is connected to the output terminal, and the second electrode of the second transistor is connected to the first voltage terminal.

9. The display device according to claim 5, wherein: The display liquid crystal panel also includes a second gate driving circuit; The second gate driving circuit is located in the first light shielding area and at least on one side of the display area. The second gate driving circuit comprises a plurality of cascaded second shift register units, wherein the plurality of second shift register units are respectively electrically connected to a plurality of rows of display pixel units in the display area to provide a second gate driving signal; The number of transistors included in the first shift register unit is greater than the number of transistors included in the second shift register unit.

10. The display device according to claim 5, wherein: Along the arrangement direction of the two rows of active layers, the size of the first shift register unit is smaller than the row height of a row of light-control pixel units. The first shift register unit is electrically connected to a corresponding row of light-control pixel units via a signal line, and the signal line is a zigzag line.

11. The display device according to any one of claims 1 to 3, wherein: The light control pixel array is located in the light control area. The light control pixel array includes an edge light control pixel unit and a middle light control pixel unit. The edge light-control pixel unit is arranged along the edge of the light-control area and surrounds the middle light-control pixel unit. In at least one direction, the size of the edge light-control pixel unit is different from the size of the middle light-control pixel unit.

12. The display device according to any one of claims 1 to 3, further comprising a backlight source, in, The backlight source is located at a side of the light control panel away from the display liquid crystal panel, and is configured to provide initial backlight to the light control panel, and the light control panel adjusts the initial backlight to obtain the adjusted backlight.

13. A method for preparing a display device, comprising: A light control panel and a display liquid crystal panel are provided, wherein the light control panel includes a light control area, the light control area is configured to provide adjusted backlight to the display liquid crystal panel, the display liquid crystal panel includes a display area, the display area is configured to receive the adjusted backlight to perform display, and a distance between two opposite edges of the light control area in at least one direction is greater than a distance between two opposite edges of the display area in the at least one direction; and Aligning and laminating the light control panel and the display liquid crystal panel, wherein the display liquid crystal panel is located on the light emitting side of the light control panel; The display liquid crystal panel further comprises a first light shielding area surrounding the display area, wherein an orthographic projection of the first light shielding area on the light control panel at least partially overlaps with the light control area in at least one direction; The light control panel comprises a light control pixel array, the light control pixel array is configured to adjust the backlight incident on the light control panel so that the light control panel provides the adjusted backlight to the display liquid crystal panel, and the light control pixel array is at least located in the light control area; The light control panel further includes a second light shielding area surrounding the light control area, the light control pixel array includes a plurality of light control pixel units arranged in an array; the second light shielding area at least partially shields the light control pixel units at the edge of the light control pixel array in at least one direction; The difference between the distance between two opposite edges of the light control area in at least one direction and the distance between two opposite edges of the display area in at least one direction is a predetermined distance, The value of the predetermined distance is greater than or equal to twice the absolute value of the maximum fitting tolerance between the display liquid crystal panel and the light control panel in at least one direction; The display area includes a plurality of display pixel units arranged in an array, and an absolute value of the maximum fitting tolerance in at least one direction is smaller than a size of the display pixel unit in the at least one direction.

14. The method for manufacturing a display device according to claim 13, wherein: Aligning and laminating the light control panel and the display liquid crystal panel comprises: The orthographic projection of the display area on the light control panel is located within the light control area.

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