Display module and display device

Abstract

The utility model relates to the technical field of display devices, and particularly discloses a display module and a display device. The display module comprises a display panel, the display panel comprises a light-transmitting display area, a main display area and a frame area, the light-transmitting display area is located between the frame area and the main display area, the frame area is provided with frame glue, and the display panel further comprises a cover plate and an ink layer located on the surface of one side of the cover plate; the display panel further comprises an array substrate and a color film substrate which are oppositely arranged, and a first alignment film is arranged on the surface of the side, facing the array substrate, of the color film substrate. The orthographic projection of the first alignment film in the light-transmitting display area is at least partially overlapped with the orthographic projection of the ink layer in the light-transmitting display area. Therefore, according to the display module provided by the invention, the alignment film arranged on the surface of the color film substrate and the ink layer arranged on the surface of the cover plate are adopted to control the emergent light of the light-transmitting display area, so that the light leakage phenomenon is improved, and the display quality of the liquid crystal display device is further improved.

Description

Technical Field

[0001] This application relates to the field of display device technology, specifically to a display module and a display device. Background Technology

[0002] Currently, LCD display modules have become an indispensable electronic product in people's lives. Various LCD display modules, such as those used in automotive displays, mobile phones, tablets, and laptops, have greatly increased the convenience of people's lives.

[0003] With the development of display technology and the upgrading of user needs, the screen ratio of LCD display modules is becoming larger and larger, and the application of large screen ratio LCD display modules (such as full screen) is becoming more and more widespread in the field of automotive displays.

[0004] However, existing in-vehicle LCD displays suffer from backlight leakage after prolonged use. Utility Model Content

[0005] This application aims to at least solve one of the technical problems existing in the prior art. To this end, this application proposes a display module and a display device. The display module controls the light emission of the light-transmitting display area by using an alignment film disposed on the surface of the color filter substrate and an ink layer disposed on the surface of the cover plate, so as to improve the light leakage phenomenon and thereby improve the display quality of the liquid crystal display device.

[0006] A first aspect of this application provides a display module, the display module comprising:

[0007] Display panel: includes a light-transmitting display area, a main display area and a border area, wherein the main display area is located on at least one side of the light-transmitting display area, the light-transmitting display area is located between the main display area and the border area, and the border area is provided with border adhesive;

[0008] Cover plate: disposed on the display side of the above display panel and covering the above display panel;

[0009] Ink layer: disposed on the side of the cover plate opposite to the display panel and located outside the main display area;

[0010] The aforementioned display panel also includes an array substrate and a color filter substrate disposed opposite to each other. A first alignment film is provided on one side surface of the color filter substrate facing the array substrate. The orthographic projection of the ink layer in the light-transmitting display area at least partially overlaps with the orthographic projection of the first alignment film in the light-transmitting display area.

[0011] In some embodiments, the light-transmitting display area is provided with columnar spacers, and the columnar spacers are disposed between the frame adhesive and the first alignment film.

[0012] In some embodiments, the columnar spacers abut against the side surface of the border adhesive facing the first alignment film.

[0013] In some embodiments, the columnar spacer abuts against the surface of the first alignment film facing the edge adhesive.

[0014] In some embodiments, the columnar spacers are disposed on the side surface of the color filter substrate facing the array substrate.

[0015] In some embodiments, the distance between the orthographic projection of the columnar spacer onto the display panel and the main display area is 750 μm or more.

[0016] In some embodiments, the distance between the orthographic projection of the ink layer on the display panel and the main display area is 500μm±200μm.

[0017] In some embodiments, the distance between the orthographic projection of the ink layer on the display panel and the main display area is 300μm±300μm.

[0018] In some embodiments, the ink layer is arranged circumferentially around the main display area.

[0019] In some embodiments, a second alignment film is provided on the side surface of the array substrate facing the color filter substrate.

[0020] In some embodiments, the second alignment film is disposed against the edge adhesive.

[0021] In some embodiments, a gate driving circuit is provided in the light-transmitting display area, and a pixel driving circuit is provided in the main display area, with the gate driving circuit and the pixel driving circuit being coupled together.

[0022] In some embodiments, the two ends of the aforementioned frame adhesive are respectively connected to the aforementioned array substrate and color filter substrate; the aforementioned frame adhesive, the aforementioned array substrate and the color filter substrate enclose a region for accommodating liquid crystal.

[0023] In some embodiments, the cover plate is fixed to the display panel by an adhesive layer, which includes an optically transparent adhesive layer.

[0024] A second aspect of this application is to provide a display device comprising the display module described in the first aspect.

[0025] The beneficial technical effects of this application are as follows:

[0026] The display module provided in this application controls the light emission of the light-transmitting display area by using an alignment film on the surface of the color filter substrate and an ink layer on the surface of the cover plate, thereby improving light leakage and thus improving the display quality of the liquid crystal display device. Attached Figure Description

[0027] Various other advantages and benefits will become apparent to those skilled in the art upon reading the following detailed description of preferred embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of this application. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings:

[0028] Figure 1 This is a schematic diagram of the structure of the display module in some embodiments of this application;

[0029] Figure 2 yes Figure 1 A partial sectional view along the PP direction;

[0030] Figure 3A , Figure 3B , Figure 3C , Figure 3D yes Figure 1 Another partial sectional view along the PP direction;

[0031] Figure 4A This is a schematic diagram showing the positional relationship between the orthographic projection of the columnar spacer onto the display panel and the display area;

[0032] Figure 4B It is a schematic diagram showing the positional relationship between the orthographic projection of the ink layer on the display panel and the display area;

[0033] Figure 4C This is another schematic diagram showing the positional relationship between the orthographic projection of the ink layer on the display panel and the display area;

[0034] Figure 5 yes Figure 1 Another partial sectional view along the PP direction;

[0035] Figure 6 yes Figure 1 Another partial sectional view along the PP direction;

[0036] Figure 7 yes Figure 1 Another partial sectional view along the PP direction;

[0037] The labels in the attached diagram are as follows:

[0038] 1000, Display Module;

[0039] 100. Display panel; AA. Display area; BB. Bezel area; CC. Transmitting display area;

[0040] 110. Color filter substrate; 110a. First alignment film;

[0041] 120, array substrate; 120a, second alignment film;

[0042] 130, columnar septum; 130', orthographic projection of the columnar septum onto the display panel;

[0043] 140. LCD;

[0044] 150a, upper polarizer; 150b, lower polarizer;

[0045] 160. Black Matrix;

[0046] 170. Planarization layer;

[0047] 200. Backlight module;

[0048] 300, cover plate; 300a, ink layer; 300a', orthographic projection of the ink layer onto the display panel;

[0049] 400', Bezel adhesive; 400', Orthographic projection of the bezel adhesive onto the display panel;

[0050] 500, Adhesive layer.

[0051] X-axis: One direction in which the display panel extends;

[0052] Y-axis: Another direction in which the display panel extends;

[0053] Z-axis: The thickness direction of the display panel. Detailed Implementation

[0054] To make the objectives, technical solutions, and advantages of this application clearer, the application will be further described below with reference to the accompanying drawings and specific embodiments. The embodiments in this application can be implemented in many different forms. Those skilled in the art will readily understand that the implementation methods and content can be transformed into various forms without departing from the spirit and scope of this application. Therefore, this application should not be construed as being limited only to the content described in the following embodiments. Without conflict, the embodiments and features in the embodiments of this application can be arbitrarily combined with each other.

[0055] The accompanying drawings illustrate various structural schematics according to embodiments of this application. The scale of the drawings can be used as a reference in actual manufacturing processes, but is not limited thereto. For example, the aspect ratio of the channels, the thickness and spacing of each film layer, and the width and spacing of each signal line can be adjusted according to actual needs. The number of pixels in the display substrate and the number of sub-pixels in each pixel are not limited to the quantities shown in the drawings. The drawings described in this application are merely structural schematics, and one aspect of this application is not limited to the shapes or values ​​shown in the drawings.

[0056] In the context of this application, when a layer / element is referred to as being "above" another layer / element, the layer / element may be directly above the other layer / element, or there may be an intermediate layer / element between them. Additionally, if a layer / element is "above" another layer / element in one orientation, then when the orientation is reversed, the layer / element may be "below" the other layer / element.

[0057] In the description of this application, ordinal numbers such as "first" and "second" are used to avoid confusion of constituent elements, rather than to limit the quantity.

[0058] In this specification, for convenience, terms such as "middle," "upper," "lower," "front," "rear," "vertical," "horizontal," "top," "bottom," "inner," and "outer" are used to indicate orientation or positional relationships in conjunction with the accompanying drawings. This is solely for the purpose of describing this specification and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation of this application. The positional relationships of the constituent elements may be appropriately changed depending on the direction in which each constituent element is described. Therefore, the terminology used is not limited to those described in the specification and may be appropriately replaced as appropriate.

[0059] In this specification, unless otherwise expressly specified and limited, the terms "setup" and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; a mechanical connection or an electrical connection; a direct connection, an indirect connection via an intermediate component, or a connection within two components. Those skilled in the art will understand the specific meaning of these terms in this application based on the specific circumstances.

[0060] "A and / or B" includes the following two combinations: A only, B only, and a combination of A and B.

[0061] "At least one of A, B and C" has the same meaning as "at least one of A, B or C", both including the following combinations of A, B and C: only A, only B, only C, combinations of A and B, combinations of A and C, combinations of B and C, and combinations of A, B and C.

[0062] This document describes exemplary embodiments with reference to cross-sectional views and / or plan views, which are idealized exemplary drawings. In the drawings, the thickness of layers and regions is enlarged for clarity. Therefore, variations in shape relative to the drawings are contemplated due to, for example, manufacturing techniques and / or tolerances. Thus, exemplary embodiments should not be construed as being limited to the shapes of the regions shown herein, but rather include shape deviations due to, for example, manufacturing processes. For example, etched regions shown as rectangular would typically have curved features. Therefore, the regions shown in the drawings are schematic in nature, and their shapes are not intended to show the actual shapes of the regions of the device, nor are they intended to limit the scope of the exemplary embodiments.

[0063] Currently, LCD modules are widely used in products of various sizes, covering almost all major electronic products in today's information society, such as LCD TVs, high-definition digital TVs, computers (desktops and laptops), mobile phones, tablets, navigators, in-vehicle displays, projection displays, cameras, digital cameras, electronic watches, calculators, electronic instruments, meters, public displays, and virtual displays.

[0064] In addition to applications such as instrument panels, center consoles, and rearview mirrors, in-vehicle displays also include large-size in-vehicle screens. These screens can control in-vehicle entertainment devices such as audio and lighting, and sometimes also function as navigation and video playback devices, providing users with a better user experience. To achieve the development of larger in-vehicle screens, narrowing the bezels will be an inevitable trend in technological improvement in this field.

[0065] With the development of narrow bezels or full-screen displays in vehicles, technical problems such as light leakage, poor shadows, poor brightness uniformity, and poor display quality are prone to occur at the wide viewing angles of vehicle displays. For example, after prolonged use of vehicle displays, screen light leakage may occur, thus affecting the display effect.

[0066] To address the aforementioned technical problems, this application discloses a display module and a display device. The display module includes: a display panel, a cover plate, and an ink layer. The display panel includes a light-transmitting display area and a main display area, the main display area being located on at least one side of the light-transmitting display area. The display panel also includes a bezel area, the light-transmitting display area being located between the bezel area and the main display area, and the bezel area being provided with bezel adhesive. The cover plate is disposed on the display side of the display panel and covers the display panel. The ink layer is disposed on the side of the cover plate facing away from the display panel and located outside the main display area. The display panel also includes an array substrate and a color filter substrate disposed opposite to each other. The surface of the color filter substrate facing the array substrate has a first alignment film. The first alignment film has a frontal projection MM in the light-transmitting display area of ​​the display panel. The ink layer has a frontal projection NN in the light-transmitting display area of ​​the display panel. The frontal projection MM and the frontal projection NN at least partially overlap.

[0067] The ink layer in this application is located at the edge of the display panel and is mainly used to block the light emitted from the light-transmitting display area to reduce light leakage. However, if the width of the ink layer on the cover plate is large, it is not conducive to the narrow bezel and large screen design of the display panel. Therefore, to solve the light leakage problem in the light-transmitting display area, this application further selects to control the alignment film on the surface of the color filter substrate to extend towards the light-transmitting display area, so that the orthographic projections of the two overlap in the light-transmitting display area. This design not only effectively improves the light leakage phenomenon in the light-transmitting display area, but also reduces the impact on the existing display panel structure and manufacturing process.

[0068] like Figure 1 This application discloses a display module 1000, which refers to a display component capable of displaying images, such as a liquid crystal display module.

[0069] Combination Figure 1 As can be seen, the display module 1000 includes a display panel 100 and a backlight module 200, wherein the display panel 100 is located on the display side of the display module 1000, and the backlight module 200 is located on the backlight side of the display module 1000. In this application, the display side refers to the light-emitting side of the display panel 100 used for displaying image quality, and the backlight side refers to the side that is disposed opposite to the display side.

[0070] The display panel 100 of this application includes a main display area AA, a light-transmitting display area CC, and a bezel area BB. The main display area AA is located on at least one side of the light-transmitting display area CC, including both sides and more. Figure 1The diagram illustrates that the light-transmitting display area CC is located between the aforementioned border area BB and the aforementioned main display area AA, and the light-transmitting display area CC is circumferentially arranged around the main display area AA, while the border area BB is circumferentially arranged around the light-transmitting display area CC. This application... Figure 1 The diagram only illustrates the positional relationship between the main display area AA, the light-transmitting display area CC, and the border area BB, and does not limit the specific shape.

[0071] Combination Figure 1 , Figure 2 It is understood that the display module 1000 also includes a cover plate 300, wherein the cover plate 300 is disposed on the display side of the display panel 100 and covers the display panel 100; an ink layer 300a is disposed on the side surface of the cover plate 300 away from the display panel 100, the ink layer 300a is located outside the main display area AA, and the ink layer 300a has a positive projection NN in the light-transmitting display area of ​​the display panel 100.

[0072] The ink layer of this application is mainly used for light blocking. Specifically, it extends to the light-transmitting display area to block the light emitted from the light-transmitting display area. In addition, it also enhances wear resistance and is used for printing touch buttons and signs. The material and preparation process of the ink layer include any method conventional in the art, such as using screen printing technology.

[0073] Combination Figure 2 It is understood that the display panel 100 is provided with an array substrate 120 and a color filter substrate 110 disposed opposite to each other. The color filter substrate 110 is provided with a first alignment film 110a on the side surface facing the array substrate 120. The first alignment film 110a also extends to the light-transmitting display area CC. Specifically, the first alignment film 110a has a positive projection MM in the light-transmitting display area CC of the display panel 100.

[0074] The alignment film of this application is made of a polymer alignment agent, such as polystyrene and its derivatives, polyvinyl alcohol, polyester, epoxy resin, polyurethane, polysilane, and polyimide, which are conventional in the art. This alignment film is mainly used to control the alignment direction of liquid crystal molecules, so as to control the orientation of liquid crystal molecules and thereby reduce light leakage in the light-transmitting display area. The thickness of the alignment film is 500 angstroms to 800 angstroms.

[0075] This application is in Figure 2 The diagram also illustrates that the orthographic projection MM of the first alignment film 110a in the light-transmitting display area CC of the display panel 100 partially overlaps with the orthographic projection NN of the ink layer 300a in the light-transmitting display area CC of the display panel 100.

[0076] The orthographic projection in this application refers to a projection method in which the parallel projection lines of the projected image are perpendicular to the projection plane, with the projection plane as the reference. This application employs a design where the orthographic projection MM of the first alignment film on the light-transmitting display area CC of the display panel and the orthographic projection NN of the ink layer on the light-transmitting display area CC of the display panel partially overlap. By simultaneously using the alignment film disposed on the surface of the color filter substrate and the ink layer disposed on the surface of the cover plate to control the light emission within the light-transmitting display area, the light leakage phenomenon in the light-transmitting display area is effectively improved, thereby enhancing the display quality of the liquid crystal display device.

[0077] In some embodiments, such as Figure 3A As shown, the light-transmitting display area CC is provided with columnar spacers 130, and the columnar spacers 130 are disposed between the frame adhesive 400 and the first alignment film 110a.

[0078] The spacer in this application is a columnar spacer. The columnar spacer is mainly used to reduce the adhesion between the frame adhesive and the first alignment film. This is because the adhesion between the alignment film and the frame adhesive in the prior art is poor, which can easily cause the product to open. The columnar spacer used in this application not only facilitates the support of the array substrate and the color filter substrate to form the liquid crystal cell, but also avoids the problem of uneven cell thickness when the display panel is under pressure. It also helps to reduce the risk of opening the cell, thereby improving the stability of the display panel.

[0079] The columnar septa in this application are regularly arranged in the light-transmitting display area. Although not shown in detail in the accompanying drawings, they do exist in practice.

[0080] Combination Figure 3B It is understood that one end of the columnar spacer 130 is disposed against the frame adhesive 400. Specifically, the columnar spacer 130 abuts against the side surface of the frame adhesive 400 facing the first alignment film 110a. This design helps to further improve the stability of the display panel.

[0081] Combination Figure 3C It is understood that one end of the columnar spacer 130 is disposed abutting against the first alignment film 110a. Specifically, the columnar spacer 130 abuts against the surface of the first alignment film 110a facing the frame adhesive 400. This design also helps to further improve the stability of the display panel.

[0082] Combination Figure 3AIt is understood that the columnar spacer 130 is disposed between the frame adhesive 400 and the first alignment film 110a, and there is a certain gap between the columnar spacer 130 and the frame adhesive 400, and at the same time, there is also a certain gap between the columnar spacer 130 and the first alignment film 110a. This design not only separates the frame adhesive 400 from the first alignment film 110a, but also provides sufficient buffer space for each structural component.

[0083] Combination Figure 3A , Figure 3B and Figure 3C As can be seen, the columnar spacer 130 is disposed on the side surface of the color filter substrate 110 facing the array substrate 120, mainly for facilitating the support of the array substrate 120 and the color filter substrate 110 to form a liquid crystal cell. This application will be explained in detail below with reference to the accompanying drawings.

[0084] Combination Figure 4A It can be seen that the distance between the above-mentioned columnar spacer in the orthographic projection 130' of the display panel and the above-mentioned main display area AA is L0, and L0 is more than 750μm.

[0085] In this application, the distance L0 between the orthographic projection of the columnar spacer on the display panel and the main display area is selected to be 750 μm or more. This is because, under the existing manufacturing process, the frame adhesive is prone to process fluctuations during formation, which can lead to displacement. This can easily cause the frame adhesive to be coated onto the surface of the columnar spacer, resulting in an excessively high cell thickness. This application controls a certain distance so that it can both serve as a light shield and reduce the impact on the thickness of the liquid crystal cell.

[0086] Combination Figure 4A It is understood that in this application, the distance L0 between the above-mentioned columnar spacer's orthographic projection 130' on the display panel and the above-mentioned main display area AA is 750μm or more. Based on this, combined with Figure 4B It is understood that this application further controls the distance between the ink layer on the orthographic projection 300a' of the display panel and the main display area AA to be L1, where L1 is 500μm±200μm.

[0087] In these embodiments, this application discloses that the distance L1 between the orthographic projection of the ink layer on the display panel and the main display area AA is any one of 300μm, 350μm, 400μm, 450μm, 500μm, 550μm, 600μm, 650μm, and 700μm, or any one of the ranges of both. In these embodiments, this design approach is advantageous for mitigating light leakage, for compatibility with existing manufacturing processes and structures, and for improving the structural stability of the display panel.

[0088] Combination Figure 3D and Figure 4C As can be seen, in some embodiments of this application, the distance between the ink layer and the main display area is further controlled. Specifically, the distance between the ink layer on the orthographic projection 300a' of the display panel and the main display area AA is L1, where L1 is 300μm±300μm.

[0089] This application is in Figure 4C The diagram illustrates that the distance between the orthographic projection of the ink layer on the display panel and the aforementioned main display area AA is zero. This design method is similar to... Figure 4B Compared to the schematic method, this technique aims to cover light leakage by reducing the distance between the ink area and the main display area.

[0090] In these embodiments, this application discloses that the distance L1 between the orthographic projection of the ink layer on the display panel and the main display area AA is any one of 0, 50 μm, 100 μm, 150 μm, 200 μm, 250 μm, 300 μm, 350 μm, 400 μm, 450 μm, 500 μm, 550 μm, 600 μm, 650 μm, 700 μm or any one of the above two ranges.

[0091] In some embodiments, the ink layer 300a is arranged circumferentially around the main display area AA, as can be specifically described in conjunction with this application. Figure 1 To explain, the beneficial technical effect of this design is that it facilitates the blocking of light leakage around the main display area, thereby greatly improving the display quality of the display panel.

[0092] like Figure 5 In some embodiments, the array substrate 120 is provided with a second alignment film 120a on the side surface facing the color filter substrate 110.

[0093] The second alignment film serves the same purpose as the first alignment film, controlling the alignment direction of liquid crystal molecules to achieve proper alignment. The inclusion of the second alignment film in this application also facilitates control over the orientation of the liquid crystal molecules, thereby reducing light leakage in the transparent display area.

[0094] Combination Figure 5 It can be seen that the second alignment film 120a is disposed in opposition to the frame adhesive 400. This design helps to better reduce light leakage in the light-transmitting display area.

[0095] In some embodiments, the light-transmitting display area CC is provided with a gate driving circuit, the main display area AA is provided with a pixel driving circuit, and the gate driving circuit is coupled to the pixel driving circuit.

[0096] This application incorporates various gate driving circuits within the light-transmitting display area CC and the bezel area BB, such as a light-emitting control gate driving circuit, a first reset gate driving circuit, a second reset gate driving circuit, a first scan gate driving circuit, and a second scan gate driving circuit. Each gate driving circuit includes multiple cascaded shift register units, meaning the shift register units constitute the gate driving circuit, and each shift register unit is coupled to each pixel driving circuit. In these embodiments, this application discloses that each gate driving circuit employs Gate Driver On Array (GOA) technology to reduce the impact on the bezel area size, facilitating the achievement of the large display screen technical objective.

[0097] In some embodiments, in conjunction with Figure 3, Figure 5 It is known that the two ends of the aforementioned frame adhesive 400 are respectively connected to the aforementioned array substrate 120 and color filter substrate 110; the aforementioned frame adhesive 400, the aforementioned array substrate 120 and the color filter substrate 110 enclose a region for accommodating liquid crystal 140.

[0098] Combination Figure 6 It is understood that in some embodiments, the cover plate 300 and the display panel 100 are fixed together by an adhesive layer 500, which includes an optically transparent adhesive layer.

[0099] The optically transparent adhesive layer of this application includes a special adhesive for bonding transparent optical elements. On the one hand, it fixes the cover plate 300 and the display panel 100 together, and on the other hand, it can play a sealing role to provide waterproof and dustproof protection for the display panel 100.

[0100] This application is based on Figure 7 Using the schematic structure as an example, the display module of this application will be described in detail.

[0101] This application provides a display module 1000, which includes a display panel 100 and a backlight module 200. The display panel 100 is located on the display side of the display module 1000, and the backlight module 200 is located on the backlight side of the display module 1000. The display panel 100 of this application includes a main display area AA, a light-transmitting display area CC, and a bezel area BB. The main display area AA is located on at least one side of the light-transmitting display area CC, including one side and more than two sides. Figure 6 The diagram illustrates that the light-transmitting display area CC is located between the aforementioned border area BB and the aforementioned main display area AA, and the light-transmitting display area CC is arranged circumferentially around the main display area AA, the border area BB is arranged circumferentially around the light-transmitting display area CC, and the border area BB is provided with border adhesive 400.

[0102] The display panel 100 of this application includes a color filter substrate 110, an array substrate 120, an upper polarizer 150a, a black matrix 160, and a planarization layer 170. Liquid crystal 140 is disposed within the area enclosed by the color filter substrate 110, the array substrate 120, and the bezel adhesive 400. Figure 6 It is known that a first alignment film 110a is provided on the side surface of the planarization layer 170 facing the array substrate 120, and a second alignment film 120a is provided on the side surface of the array substrate 120 facing the planarization layer 170. A columnar spacer 130 is provided between the first alignment film 110a and the frame adhesive 400, and the columnar spacer 130, the first alignment film 110a, and the frame adhesive 400 all have certain pores. The second alignment film 120a and the frame adhesive 400 are disposed against each other.

[0103] Combination Figure 7 It is understood that the display module 1000 also includes a cover plate 300, wherein the cover plate 300 is disposed on the display side of the display panel 100 and covers the display panel 100; an ink layer 300a is disposed on the surface of the cover plate 300 opposite to the display panel 100, the ink layer 300a is located outside the main display area AA, and the ink layer 300a has an orthographic projection NN in the light-transmitting display area of ​​the display panel 100. The first alignment film 110a has an orthographic projection MM in the light-transmitting display area CC of the display panel 100. And the orthographic projection MM of the first alignment film 110a in the light-transmitting display area CC of the display panel 100 partially overlaps with the orthographic projection NN of the ink layer 300a in the light-transmitting display area CC of the display panel 100.

[0104] Therefore, this application controls the light emission in the light-transmitting display area by simultaneously using an alignment film on the surface of the color filter substrate and an ink layer on the surface of the cover plate, which effectively improves the light leakage phenomenon in the light-transmitting display area and thus improves the display quality of the liquid crystal display device.

[0105] It should be understood that the terminology used herein is for the purpose of describing particular exemplary embodiments only and is not intended to be limiting. Unless the context clearly indicates otherwise, the singular forms “a,” “an,” and “described” as used herein may also include the plural forms. The terms “comprising,” “including,” “containing,” and “having” are inclusive and therefore indicate the presence of the stated features, steps, operations, elements, and / or components, but do not exclude the presence or addition of one or more other features, steps, operations, elements, components, and / or combinations thereof. The method steps, processes, and operations described herein are not construed as requiring them to be performed in a particular order described or illustrated unless the order of performance is explicitly indicated. It should also be understood that additional or alternative steps may be used.

[0106] The above description is merely a preferred embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A display module, characterized by The display panel comprises a light-transmitting display area, a main display area and a frame area, the main display area is located at least one side of the light-transmitting display area, the light-transmitting display area is located between the main display area and the frame area, and the frame area is provided with a frame glue. The cover plate is arranged on the display side of the display panel and covers the display panel. The ink layer is arranged on the side of the cover plate away from the display panel and is located outside the main display area. The display panel further comprises an array substrate and a color film substrate arranged oppositely, and a first alignment film is arranged on the side surface of the color film substrate facing the array substrate; the projection of the ink layer on the light-transmitting display area at least partially overlaps the projection of the first alignment film on the light-transmitting display area. The light-transmitting display area is provided with a columnar spacer, and the columnar spacer is arranged between the frame glue and the first alignment film.

2. The display module of claim 1, wherein, The columnar spacer abuts against the side surface of the frame glue facing the first alignment film.

3. The display module of claim 2, wherein, The columnar spacer abuts against the side surface of the first alignment film facing the frame glue.

4. The display module of claim 2, wherein, The columnar spacer is arranged on the side surface of the color film substrate facing the array substrate.

5. The display module of any one of claims 2-4, wherein, The distance between the projection of the columnar spacer on the display panel and the main display area is 750 μm or more.

6. The display module of any one of claims 2-4, wherein, The distance between the projection of the ink layer on the display panel and the main display area is 500 μm ± 200 μm.

7. The display module of any one of claims 1-4, wherein, The distance between the projection of the ink layer on the display panel and the main display area is 300 μm ± 300 μm.

8. The display module of any one of claims 1-4, wherein, The ink layer is arranged circumferentially around the main display area.

9. The display module of any one of claims 1-4, wherein, The side surface of the array substrate facing the color film substrate is provided with a second alignment film.

10. The display module of any one of claims 1-4, wherein, The second alignment film is arranged in abutment with the frame glue.

11. The display module of claim 10, wherein, The light-transmitting display area is provided with a gate drive circuit, the main display area is provided with a pixel drive circuit, and the gate drive circuit and the pixel drive circuit are coupled and connected.

12. The display module of any one of claims 1-4, wherein, The two ends of the frame glue are respectively connected with the array substrate and the color film substrate; the frame glue, the array substrate and the color film substrate enclose an interval for accommodating liquid crystal.

13. The display module of any one of claims 1-4, wherein, The cover plate and the display panel are fixed by an adhesive layer, and the adhesive layer comprises an optically transparent adhesive layer.

14. The display module of any one of claims 1-4, wherein, The display module comprises any one of claims 1-14.

15. A display device comprising: The display module comprises any one of claims 1-14.

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