Display module and display device

Abstract

The invention discloses a display module and a display device. The display module comprises a liquid crystal display panel, a backlight component and a first flexible circuit board. Wherein a conductive part is arranged in the liquid crystal display panel, and one end of the first flexible circuit board can be connected with the first coil assembly through the conductive part due to the fact that the conductive part at least penetrates through the part, located in the non-display area, of the color film substrate. In this way, direct connection with the first coil assembly on the first substrate of the array substrate can be avoided, so that the frame size of the liquid crystal display panel can be reduced, and the display module can achieve the effect of a narrow frame.

Description

Technical Field

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

[0002] A display module is a module used to display images and text.

[0003] Some current display modules integrate Near Field Communication (NFC) modules, enabling their widespread application in wireless payment, access control, and data transmission. An NFC module typically consists of a coil and a chip; data transmission between different devices is achieved through the electromagnetic coupling effect of the coil.

[0004] However, the coils and chips in the aforementioned NFC module increase the bezel size of the display module. Summary of the Invention

[0005] This application provides a display module and a display device. The technical solution is as follows:

[0006] According to one aspect of this application, a display module is provided, the display module comprising: a liquid crystal display panel, a backlight component, and a first flexible circuit board;

[0007] The liquid crystal display panel has a display area and a non-display area. The liquid crystal display panel includes: a color filter substrate and an array substrate disposed opposite to each other; the array substrate includes: a first substrate, and a first coil assembly and a plurality of pixel electrodes distributed on the same side of the first substrate. The first coil assembly has a plurality of grid holes, and the plurality of grid holes correspond one-to-one with at least a portion of the pixel electrodes. The orthographic projection of the pixel electrode on the first substrate is located within the orthographic projection of the corresponding grid hole on the first substrate; and the liquid crystal display panel also has a conductive portion, the conductive portion at least penetrating the portion of the color filter substrate located in the non-display area.

[0008] The backlight component is located on the side of the array substrate away from the color filter substrate;

[0009] One end of the first flexible circuit board is connected to the first coil assembly through the conductive part, and the other end of the first flexible circuit board can be bent to the side of the backlight component away from the liquid crystal display panel.

[0010] Optionally, the portion of the color filter substrate located in the non-display area has a first via, and at least a portion of the conductive portion is embedded in the first via;

[0011] Wherein, the end of the conductive part near the first substrate is electrically connected to the first coil assembly, and the end of the conductive part away from the first substrate is electrically connected to the first flexible circuit board.

[0012] Optionally, the axis of the first via is perpendicular to the first substrate, and the end of the first flexible circuit board connected to the conductive part is located on the side of the color filter substrate away from the array substrate.

[0013] Optionally, the color filter substrate includes: a second substrate, and a color resist layer distributed on one side of the second substrate; the liquid crystal display panel further includes: an adhesive sealant and a liquid crystal layer; the adhesive sealant is distributed in the non-display area, and the adhesive sealant is located between the color filter substrate and the array substrate; the liquid crystal layer is located in the area enclosed by the adhesive sealant;

[0014] The second substrate has the first via, and the sealing adhesive has a second via communicating with the first via; a portion of the conductive part is embedded in the first via, and another portion is embedded in the second via.

[0015] Optionally, the first flexible circuit board includes: a first portion connected to the conductive portion, a second portion located on the side of the backlight component facing away from the liquid crystal display panel, and a third portion for connecting the first portion and the second portion;

[0016] The backlight component includes: a frame and a light source located within the frame; the frame has a first groove on the side facing the first flexible circuit board, and at least a portion of the third part is located within the first groove.

[0017] Optionally, the display module further includes: a first polarizer located on the side of the color filter substrate facing away from the array substrate, the first polarizer having a second groove at its edge facing the first flexible circuit board, at least a portion of the first portion being located within the second groove;

[0018] The depth of the second groove is greater than the depth of the first groove.

[0019] Optionally, the display module further includes: a second polarizer, the second polarizer being located on the side of the array substrate away from the color filter substrate, the second polarizer having a third groove at the edge facing the first flexible circuit board, the third groove communicating with the first groove;

[0020] The depth of the third groove is greater than or equal to the depth of the first groove, and the depth of the third groove is less than the depth of the second groove.

[0021] Optionally, at least a portion of the edge of the first polarizer, excluding the edge where the second groove is formed, protrudes beyond the edge of the color filter substrate; and / or, at least a portion of the edge of the second polarizer, excluding the edge where the third groove is formed, protrudes beyond the edge of the array substrate.

[0022] Optionally, the bottom of the first groove is flush with the edge of the array substrate facing the first flexible circuit board, and also flush with the edge of the color filter substrate facing the first flexible circuit board;

[0023] Alternatively, the bottom of the first groove protrudes beyond the edge of the array substrate facing the first flexible circuit board, and also protrudes beyond the edge of the color filter substrate facing the first flexible circuit board.

[0024] Optionally, there is a gap between the bottom of the first groove and the third part.

[0025] Optionally, the display module further includes: a first chip and a protective layer;

[0026] The first chip is located on the side of the third part away from the frame, and the first chip is electrically connected to the third part; the protective layer is located on the side of the first chip away from the third part.

[0027] Optionally, the frame facing the side of the first flexible circuit board includes: a first region overlapping the first flexible circuit board and a second region not overlapping the first flexible circuit board, wherein the first region has the first groove;

[0028] The vertical distance between the side of the protective layer facing away from the first chip and the second region is less than or equal to 0.3 mm.

[0029] Optionally, the display module further includes a second coil assembly located on the side of the backlight component away from the liquid crystal display panel, wherein one end of the first flexible circuit board away from the conductive part is connected to the second coil assembly.

[0030] Optionally, the display module further includes: a second flexible circuit board, which is bonded to the array substrate;

[0031] The second flexible circuit board and the first flexible circuit board are disposed opposite each other on both sides of the liquid crystal display panel.

[0032] On the other hand, a display device is provided, the display device comprising: a middle shell, and any of the above-described display modules.

[0033] The beneficial effects of the technical solutions provided in this application include at least the following:

[0034] A conductive portion is provided in the liquid crystal display panel. Since this conductive portion at least penetrates the portion of the color filter substrate located in the non-display area, one end of the first flexible circuit board can be connected to the first coil assembly through the conductive portion. This avoids direct connection to the first coil assembly on the first substrate of the array substrate, thereby reducing the bezel size of the liquid crystal display panel and enabling the display module to achieve a narrow bezel effect. Attached Figure Description

[0035] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0036] Figure 1 This is a structural diagram of a display module provided by related technologies;

[0037] Figure 2 This is a top view of a display module provided in an embodiment of this application;

[0038] Figure 3 yes Figure 2 A cross-sectional structural diagram of the provided display module;

[0039] Figure 4 This is a schematic diagram of another display module provided in an embodiment of this application;

[0040] Figure 5 This is a schematic diagram of another display module provided in an embodiment of this application;

[0041] Figure 6 yes Figure 5 A cross-sectional structural diagram of the provided display module;

[0042] Figure 7 yes Figure 5 Another cross-sectional structural diagram of the provided display module;

[0043] Figure 8 This is a rear view structural diagram of another display module provided in an embodiment of this application;

[0044] Figure 9 yes Figure 8 A cross-sectional structural diagram of the provided display module;

[0045] Figure 10 yes Figure 2 A cross-sectional structural diagram of the provided display module.

[0046] The accompanying drawings illustrate specific embodiments of this application, which will be described in more detail below. These drawings and descriptions are not intended to limit the scope of the concept in any way, but rather to illustrate the concept of this application to those skilled in the art through reference to particular embodiments. Detailed Implementation

[0047] To make the objectives, technical solutions, and advantages of this application clearer, the embodiments of this application will be described in further detail below with reference to the accompanying drawings.

[0048] Figure 1 This is a schematic diagram of a display module provided by related technology. The display module 20 integrates NFC functionality. The display module 20 includes: a liquid crystal display panel 21, a backlight component 22, and a first flexible circuit board 23. The liquid crystal display panel 21 has a display area A1 and a non-display area A2. The liquid crystal display panel 21 includes: a color filter substrate 211 and an array substrate 212 disposed opposite to each other. The array substrate 212 includes: a first substrate 2121, and a first coil assembly 2122 and a plurality of pixel electrodes 2123 distributed on the same side of the first substrate 2121.

[0049] However, since the first flexible circuit board 23 needs to be bonded to the first coil assembly 2122, the edge of the first substrate 2121 protrudes beyond the edge of the color filter substrate 211 to reserve an area for bonding the first flexible circuit board 13. To ensure the bonding strength of the first flexible circuit board 23, the distance L2 between the edge of the first substrate 2121 and the color filter substrate 211 is greater than or equal to 0.6 mm, which will cause the side bezel of the display module 20 to increase by at least 0.6 mm, which is not conducive to achieving a narrow bezel. In the area where the first flexible circuit board 23 is set, the size (L1+L2) of the non-display area A2 of the display module 20 is greater than or equal to 1.6 mm.

[0050] In addition, in the area where the first substrate 2121 protrudes from the color filter substrate 211, there is only a single layer of the first substrate 2121. This increases the risk of damage and microcracks in this area. Damage and microcracks extending to the display area A1 will cause black spots to appear in the display area A1, which will reduce the yield of the display module 20.

[0051] This application provides a display module; please refer to... Figure 2 and Figure 3 , Figure 2 This is a top view schematic diagram of a display module provided in an embodiment of this application. Figure 3 yes Figure 2 A cross-sectional structural diagram of the provided display module ( Figure 3 It can be Figure 2The provided display panel is shown in a cross-sectional view at B1-B1. The display module 10 includes: a liquid crystal display panel 11, a backlight component 12, and a first flexible circuit board 13. In this application, the display module 10 can be a liquid crystal display (LCD) module. The display module 10 can employ Touch and Display Driver Integration (TDDI) technology to integrate the touch chip and the display chip into a single chip to save space.

[0052] The liquid crystal display panel 11 has a display area A1 and a non-display area A2. Here, the display area A1 can be used to display images or text, and the non-display area A2 is used to set circuit structures, etc. The non-display area A2 can be located around the display area A1.

[0053] The liquid crystal display panel 11 includes a color filter substrate 111 and an array substrate 112 disposed opposite to each other. The array substrate 112 includes a first substrate 1121, a first coil assembly 1122 and a plurality of pixel electrodes 1123 distributed on the same side of the first substrate 1121. The first coil assembly 1122 has a plurality of grid holes K1, and the plurality of grid holes K1 correspond one-to-one with at least a portion of the pixel electrodes 1123. The orthographic projection of the pixel electrode 1123 on the first substrate 1121 is located within the orthographic projection of the corresponding grid hole K1 on the first substrate 1121.

[0054] Here, the color filter substrate 111 has selective transmittance for light of a specific wavelength. After the light emitted by the backlight component 12 passes through the array substrate 112 and the liquid crystal layer, the color filter substrate 111 can filter it, thereby ensuring the color performance and image quality of the liquid crystal display panel 11.

[0055] The first substrate 1121 is used to support the first coil assembly 1122 and a plurality of pixel electrodes 1123. The first substrate 1121 can be a light-transmitting substrate so that light emitted from the backlight component 12 can pass through the array substrate 112. For example, the material of the first substrate 1121 may include glass or other light-transmitting materials. The pixel electrodes 1123 are used to control the liquid crystal layer (…). Figure 3 The arrangement of liquid crystal molecules in the array substrate (not shown) determines the brightness and color of the pixels. The liquid crystal layer is located between the color filter substrate 111 and the array substrate 112. A thin-film transistor array electrically connected to the pixel electrode 1123 may also be disposed on the first substrate 1121. Figure 3 (Not shown), the thin-film transistor array can control the current flowing to the pixel electrode 1123.

[0056] The first coil assembly 1122 is used to receive and transmit data. When the display module 10 needs to transmit data, the first coil assembly 1122 can generate an electromagnetic field of a certain frequency through alternating current. When the display module 10 is in receiving mode, the first coil assembly 1122 can sense the electromagnetic field of other devices and generate an induced current, thereby realizing NFC functionality. By setting the first coil assembly 1122 in a grid structure, the first coil assembly 1122 can be placed between adjacent pixel electrodes 1123, thereby integrating the first coil assembly 1122 into the liquid crystal display panel 11. This eliminates the need for a separate external NFC device, thus reducing the thickness of the display module 10. The first coil assembly 1122 enables the display module to achieve front-facing NFC recognition functionality, where "front-facing" refers to the display surface of the display module.

[0057] In this application, the first coil assembly 1122 can be disposed only in a portion of the display area A1, such as the front NFC area N1, and the plurality of grid holes K1 of the first coil assembly 1122 correspond one-to-one with the pixel electrodes 1123 distributed in the front NFC area N1. The placement position of the front NFC area N1 can be arbitrarily set according to the requirements of the NFC sensing area, for example, Figure 2 The area N1 shown is near the top of the display module 10.

[0058] The liquid crystal display panel 11 also has a conductive portion 113, which penetrates at least the portion of the color filter substrate 111 located in the non-display area A2. Here, since the conductive portion 113 penetrates at least the portion of the color filter substrate 111 located in the non-display area A2, the conductive portion 113 can be used to bridge the first coil assembly 1122 and the first flexible circuit board 13, so that the first coil assembly 1122 and the first flexible circuit board 13 can be bonded together, thus avoiding the situation where one end of the first flexible circuit board 13 is disposed on the first substrate 1121.

[0059] The backlight component 12 is located on the side of the array substrate 112 facing away from the color filter substrate 111. Here, since the liquid crystal layer itself does not emit light, the backlight component 12 can be used to provide sufficient brightness and a uniformly distributed light source so that the display module 10 can display the image normally. For example, the backlight component 12 can be an edge-lit backlight component, or the backlight component 12 can be a direct-lit backlight component, and this application does not limit it in this way.

[0060] One end of the first flexible circuit board 13 is connected to the first coil assembly 1122 via a conductive portion 113, and the other end of the first flexible circuit board 13 can be bent to the side of the backlight component 12 away from the liquid crystal display panel 11. Here, the first flexible circuit board 13 (Flexible Printed Circuit, FPC) is used to transmit electrical signals. An NFC chip can be attached to the first flexible circuit board 13 so that the NFC chip can control the first coil assembly 1122 to realize short-range wireless communication function. Furthermore, the first flexible circuit board 13 is flexible, and bending the other end of the first flexible circuit board 13 to the back of the backlight component 12 can also reduce the bezel size of the display module.

[0061] Compared to Figure 1 The display module provided by the related technology shown, in the display module 10 provided in this application embodiment, since one end of the first flexible circuit board 13 does not need to be disposed on the first substrate 1121, the first substrate 1121 does not need to protrude from the color filter substrate 111 to reserve an area for bonding the first flexible circuit board 13. Therefore, in the area where the first flexible circuit board 13 is disposed, the edge of the color filter substrate 111 and the edge of the array substrate 112 can be flush. It should be noted that the embodiments of this application do not strictly require absolute flushing; the "flushing" can be an approximate flushing that allows for a certain degree of error.

[0062] On the one hand, this allows the size (L1) of the non-display area A2 in the area where the first flexible circuit board 13 is disposed to be greater than or equal to 1.0 mm. That is, the bezel size of the display module 10 provided in this embodiment can be reduced by at least 0.6 mm.

[0063] On the other hand, this can remove the area of ​​the first substrate 1121 that is only a single layer, reducing the risk of damage and microcracks in this area, avoiding black spots, thereby improving the yield of the display module 10 and reducing costs.

[0064] In summary, this application provides a display module in which a conductive portion is provided in the liquid crystal display panel. Since the conductive portion at least penetrates the portion of the color filter substrate located in the non-display area, one end of the first flexible circuit board can be connected to the first coil assembly through the conductive portion. This avoids direct connection to the first coil assembly on the first substrate of the array substrate, thereby reducing the bezel size of the liquid crystal display panel and enabling the display module to achieve a narrow bezel effect.

[0065] The following explains the arrangement of the conductive parts:

[0066] Please refer to Figure 3The portion of the color filter substrate 111 located within the non-display area A2 has a first via K21, and at least a portion of the conductive portion 113 is embedded in the first via K21. By providing the first via K21, it is easy to fill the first via K21 with conductive material to form the conductive portion 113, thereby allowing the conductive portion 113 to penetrate the portion of the color filter substrate 111 located within the non-display area A2.

[0067] The conductive portion 113 is electrically connected to the first coil assembly 1122 at one end near the first substrate 1121, and electrically connected to the first flexible circuit board 13 at the other end away from the first substrate 1121. This allows the conductive portion 113 to act as a bridge between the first coil assembly 1122 and the first flexible circuit board 13, thereby achieving bonding between the first coil assembly 1122 and the first flexible circuit board 13.

[0068] Optionally, the axis of the first via K21 is perpendicular to the first substrate 1121, and the end of the first flexible circuit board 13 connected to the conductive part 113 is located on the side of the color filter substrate 111 facing away from the array substrate 112. This can reduce the distance between the first flexible circuit board 13 and the first coil assembly 1122, and also ensure the stability of the adhesion between the end of the first flexible circuit board 13 connected to the conductive part 113 and the color filter substrate 111, thereby preventing the first flexible circuit board 13 from falling off, and thus improving the stability of electrical signal transmission, ensuring that the NFC function can be realized.

[0069] It should be noted that the embodiments of this application do not strictly require that the axis of the first via K21 be absolutely perpendicular to the first substrate 1121. Due to manufacturing errors, "perpendicular" can refer to an approximate perpendicularity with a deviation range of less than 5 degrees.

[0070] Alternatively, please refer to Figure 4 , Figure 4 This is a schematic diagram of another display module structure provided in this application embodiment. The color filter substrate 111 includes: a second substrate 1111, and a color resist layer 1112 distributed on one side of the second substrate 1111. Here, the color resist layer 1112 is distributed in the display area A1, and the color resist layer 1112 may include color resist blocks of various colors to achieve different light filtering effects. The second substrate 1111 is used to support the color resist layer 1112, and the material of the second substrate 1112 may include a light-transmitting material, for example, the second substrate 1112 may be a glass substrate. Therefore, the first via K21 penetrates the portion of the second substrate 1111 distributed in the non-display area A2. In this application, through-glass via (TGV) technology can be used to set the first via K21 on the second substrate 1111. TGV technology has advantages such as excellent high-frequency electrical characteristics, low cost, simple process flow, and strong mechanical stability.

[0071] The liquid crystal display panel 11 also includes a sealant 115 and a liquid crystal layer 114. The sealant 115 is distributed within the non-display area A2 and is located between the color filter substrate 111 and the array substrate 112. The liquid crystal layer 114 is located within the area enclosed by the sealant 115.

[0072] The sealing adhesive 115 is distributed in the non-display area A2. The sealing adhesive 115 can be used to bond the color filter substrate 111 and the array substrate 112 together and form a sealed cavity between the color filter substrate 111 and the array substrate 112. The sealed cavity can accommodate the liquid crystal layer 114 and prevent the liquid crystal layer 114 from leaking and external contaminants from entering.

[0073] The liquid crystal layer 114 may include multiple liquid crystal molecules. The liquid crystal molecules can rotate under the action of an electric field, thereby changing the direction of light propagation and the ability to pass through, so as to achieve light emission with different brightness and color, and thus realize the display function.

[0074] The second substrate 1111 has a first via K21, and the sealant 115 has a second via K22 communicating with the first via K21. A portion of the conductive portion 113 is embedded in the first via K21, and another portion is embedded in the second via K22. Since the sealant 115 is located between the array substrate 112 and the color filter substrate 111, and is distributed within the non-display area A2, the conductive portion 113 also needs to penetrate the sealant 115, so that the conductive portion 113 can be connected to the first coil assembly 1122 in the array substrate 112.

[0075] In this application, the first flexible circuit board occupies a portion of the space. To achieve the effect of a narrow bezel, an exemplary embodiment is described below:

[0076] Please refer to Figure 5 , Figure 6 and Figure 7 , Figure 5 This is a schematic diagram of another display module provided in an embodiment of this application. Figure 6 yes Figure 5 A cross-sectional structural diagram of the provided display module ( Figure 6 It can be Figure 5 (A cross-sectional view of the provided display panel at B2-B2) Figure 7 yes Figure 5 Another cross-sectional structural diagram of the provided display module ( Figure 7 It can be Figure 5(A cross-sectional view of the provided display panel at B3-B3). The first flexible circuit board 13 includes: a first portion 131 connected to the conductive portion 113, a second portion 132 located on the side of the backlight component 12 facing away from the liquid crystal display panel 11, and a third portion 133 for connecting the first portion 131 and the second portion 132.

[0077] The backlight component 12 includes a frame 121 and a light source 122 located within the frame 121. The frame 121 houses the light source and other optical films. Exemplarily, the frame may include an iron frame 121a and a plastic frame 121b. The iron frame 121a and the plastic frame 121b can be an integral structure formed by injection molding or a structure that snaps together using a snap-fit ​​method. This application embodiment does not limit this. The width L3 of the plastic frame 121b can be greater than or equal to 0.3 mm. Exemplarily, the width L3 of the plastic frame 121b can be 0.35 mm, which ensures both molding yield and the reliability of the module structure after attachment.

[0078] The light source 122 provided in this application can be a side-lit light source. For example, a side-lit light source may include: a strip-shaped circuit board, and multiple light-emitting diode (LED) beads on the circuit board 1. The multiple LED beads on the circuit board can be arranged in a row. That is, the side-lit light source can be a light strip. The light source 122 provided in this application can also be a direct-lit light source, and this application embodiment does not limit this.

[0079] The optical film layer in the backlight component 12 may include: a reflective sheet 123, a light guide plate 124 (LGP), a diffusion film 125, a first prism sheet 126, a second prism sheet 124, a light-shielding adhesive 128, and a double-sided adhesive 129 stacked in a direction away from the display panel 400.

[0080] The light guide plate 124 is used to convert the linear light from the side-injected light source into a surface light source. The light source 12 can be arranged opposite to the light guide plate 124 so that the light-emitting surface of the light source 12 faces the side of the light guide plate 124. When the light emitted by the light source enters from one side of the light guide plate 124, it is uniformly irradiated on the side of the light guide plate away from the reflector 123 through the internal total internal reflection effect, forming a uniform surface light source.

[0081] The reflector 123 reflects light leaking from the bottom of the light guide plate 124 back into the light guide plate, improving light utilization and thus increasing the brightness of the backlight component 12. The diffuser 125 scatters light through internal diffuser particles, making the light more uniform and reducing differences in brightness. The first prism sheet 126 and the second prism sheet 127 have a light-focusing effect, which can increase brightness.

[0082] The light-shielding adhesive 128 is used to bond and fix the liquid crystal display panel 11 and the backlight component 12, and also serves to shield light, preventing light leakage from the edges of the backlight component 12. The edge of the light-shielding adhesive 128 can be recessed from the edge of the frame 121, and the distance Ln between the edge of the light-shielding adhesive 128 and the edge of the frame 121 can be greater than or equal to 0 mm. For example, this distance Ln can be 0.13 mm, which ensures that the light-shielding adhesive 128 will not exceed the frame 121 after being attached, effectively preventing the light-shielding adhesive 129 from sticking to the first flexible circuit board 13, thereby preventing the first flexible circuit board 13 from twisting and deforming, and improving structural reliability.

[0083] Double-sided adhesive tape 129 is used to fix the light source 122 to the frame 121. The double-sided adhesive tape 129 is away from the edge of the first flexible circuit board 13 and protrudes from the frame 121a away from the edge of the first flexible circuit board 13. This can ensure the strong adhesion of the double-sided adhesive tape 129. For example, the distance between the edge of the double-sided adhesive tape 129 and the edge of the first flexible circuit board 13 is greater than or equal to 0.1 mm.

[0084] Optionally, the frame 121 has a first groove C1 on the side facing the first flexible circuit board 13, and at least a portion of the third part 133 is located within the first groove C1. That is, the edge of the backlight component 12 is recessed in the area where the first flexible circuit board 13 is provided, so that the first groove C1 can accommodate at least a portion of the first flexible circuit board 13, reducing the space occupied by the first flexible circuit board 13, thereby achieving the effect of reducing the bezel size.

[0085] The edge configuration of the backlight component 12 is explained below:

[0086] In the area where the first flexible circuit board 13 is provided, there are two possible relative positional relationships between the side of the frame 121 and the edge of the liquid crystal display panel 11:

[0087] In the first case, the bottom of the first groove C1 is flush with the edge of the array substrate 112 facing the first flexible circuit board 13, and also flush with the edge of the color filter substrate 111 facing the first flexible circuit board 13. In this way, the depth of the first groove C1 can be maximized while ensuring that the backlight component 12 can protect the edge of the liquid crystal display panel 11, thereby improving the effect of reducing the bezel size.

[0088] In the second case, the bottom of the first groove C1 protrudes beyond the edge of the array substrate 112 facing the first flexible circuit board 13, and also protrudes beyond the edge of the color filter substrate 111 facing the first flexible circuit board 13. This provides better protection for the edges of the liquid crystal display panel 11 by the backlight component 12 and also reduces manufacturing difficulty.

[0089] In the area where the first flexible circuit board 13 is not located, the side of the frame 121 protrudes beyond the edge of the liquid crystal display panel 11 facing the first flexible circuit board 13. In this way, the backlight component 12 can protect the edge of the liquid crystal display panel 11, preventing damage caused by impacts during manufacturing. For example, to protect the liquid crystal display panel 11 from damage during manufacturing, the depth La of the first groove C1 can be greater than or equal to 0.1 mm.

[0090] Optionally, there is a gap between the bottom of the first groove C1 and the third portion 133. This prevents burrs from the edges of the liquid crystal display panel 11 and the backlight component 12 from scratching the first flexible circuit board 13. For example, the size Lg of the gap can range from 0.05 mm to 0.2 mm. For instance, the size Lg can be 0.1 mm, which reduces the overall bezel size of the display module while ensuring that burrs from the edges of the liquid crystal display panel 11 and the backlight component 12 do not scratch the first flexible circuit board 13.

[0091] Alternatively, please refer to Figure 5 and Figure 6 The display module 10 further includes a first polarizer 14, which is located on the side of the color filter substrate 111 opposite to the array substrate 112. When light passes through the liquid crystal display panel 11, the arrangement of the liquid crystal molecules changes, thereby altering the polarization state of the light. The first polarizer 14 can filter out undesirable polarized light, allowing only polarized light of a specific direction to pass through, thus generating contrast and forming an image.

[0092] The first polarizer 14 has a second groove C2 at its edge facing the first flexible circuit board 13, and at least a portion of the first portion 131 is located within the second groove C2. That is, the edge of the first polarizer 14 is recessed in the area where the first flexible circuit board 13 is disposed to avoid the first flexible circuit board 13.

[0093] The depth Lb of the second groove C2 is greater than the depth La of the first groove C1. Since the first part 131 protrudes from the third part 133, this arrangement can prevent interference between the first polarizer 14 and the first part 131 of the first flexible circuit board 13.

[0094] The edge configuration of the first polarizer 14 is described below:

[0095] In the area where the first flexible circuit board 13 is disposed, the edge of the first polarizer 14 is recessed from the edge of the liquid crystal display panel 11. In this area, the distance L-b1 between the edge of the first polarizer 14 and the edge of the liquid crystal display panel 11 is greater than or equal to 0.5 mm. The distance L-b1 consists of the following two dimensions:

[0096] The first dimension is the gap Lc between the first polarizer 14 and the first flexible circuit board 13. For example, this dimension Lc is greater than or equal to 0.25 mm, within which the dimension Lc ensures that the first polarizer 14 and the first portion 131 do not structurally interfere. The range of dimension Lc is based on the cutting accuracy of the first polarizer 14 (±0.08 mm), the cutting accuracy of the first flexible circuit board 13 (±0.1 mm), the attachment accuracy of the first polarizer 14 (±0.1 mm), the bonding accuracy of the first flexible circuit board 13 (±0.05 mm), and the fluctuation level (0.17 mm calculated at the root mean square).

[0097] Furthermore, the distance Lm between the first polarizer 14 and the display area A1 is greater than or equal to 0.45 mm. This ensures that the first polarizer 14 will not discolor and enter the display area A1 during high temperature and high humidity tests. Also, considering that the first polarizer 14 may be burned at high temperatures, this embodiment can use a low-temperature anisotropic conductive film (ACF) to bond the first flexible circuit board 13 to the liquid crystal display panel 11. The bonding temperature range can be 140 degrees Celsius to 150 degrees Celsius.

[0098] The second dimension is the height Ld of the portion of the first flexible circuit board 13 bonded to the liquid crystal display panel 11. For example, this height Ld is greater than or equal to 0.3 mm. Within this range, the pull-out force of the first flexible circuit board 13 can be ensured to meet the requirements (greater than or equal to 6 N). For instance, when the height Ld is 0.3 mm and the width of the portion of the first flexible circuit board 13 bonded to the liquid crystal display panel 11 is 30 mm, the measured pull-out force of the first flexible circuit board 13 meets the pull-out force requirements.

[0099] In addition, the length L5 of the portion of the first flexible circuit board 13 that is bonded to the liquid crystal display panel 11 can be greater than or equal to 30 mm, which can also improve the bonding strength of the first flexible circuit board 13.

[0100] Alternatively, please refer to Figure 5 and Figure 7At least a portion of the edges of the first polarizer 14, excluding those where the second groove C2 is formed, protrude beyond the edge of the color filter substrate 111. That is, in the area where the first flexible circuit board 13 is not provided, the edge of the first polarizer 14 can protrude beyond the edge of the liquid crystal display panel 11. Thus, the first polarizer 14 can protect the edge of the liquid crystal display panel 11, preventing damage during manufacturing. For example, to protect the liquid crystal display panel 11 from damage during manufacturing, the distance L-b2 between the edge of the first polarizer 14 and the edge of the liquid crystal display panel 11 in this area ranges from 0.05 mm to 0.15 mm; for example, L-b2 can be 0.1 mm.

[0101] Alternatively, please refer to Figure 5 and Figure 6 The display module 10 further includes a second polarizer 15, which is located on the side of the array substrate 112 opposite to the color filter substrate 111. The second polarizer 15 can convert the unpolarized light beam emitted by the backlight component 12 into polarized light, so that the subsequent liquid crystal display panel 11 can correctly modulate the light to produce brightness and darkness contrast, thereby displaying an image.

[0102] The second polarizer 15 has a third groove C3 at its edge facing the first flexible circuit board 13, and the third groove C3 communicates with the first groove C1. That is, the edge of the second polarizer 15 is recessed in the area where the first flexible circuit board 13 is disposed.

[0103] The depth of the third groove C3 is greater than or equal to the depth of the first groove C1, and the depth of the third groove C3 is less than the depth of the second groove C2. Since the second polarizer 15 is located between the liquid crystal display panel 11 and the backlight component 12, the edge of the second polarizer 15 is opposite to the third portion 133. By setting the depth of the third groove C3 to be greater than or equal to the depth of the first groove C1, the edge of the second polarizer 15 can be prevented from protruding beyond the edge of the backlight component 12, thereby avoiding affecting the narrow bezel effect and preventing structural interference with the third portion 133. Furthermore, the second polarizer 15 does not need to consider the influence of the first portion 131, therefore the depth of the third groove C3 can be set to be less than the depth of the second groove C2.

[0104] The edge settings of the second polarizer 15 are explained below:

[0105] In the area where the first flexible circuit board 13 is located, the edge of the second polarizer 15 is recessed from the edge of the liquid crystal display panel 11. In this area, the distance Lo between the edge of the second polarizer 15 and the edge of the liquid crystal display panel 11 ranges from 0 mm to 0.15 mm. This distance Lo prevents the second polarizer 15 from extending beyond the liquid crystal display panel 11, thereby avoiding interference with the first flexible circuit board 13. For example, this distance Lo can be 0.1 mm.

[0106] Alternatively, please refer to Figure 5 and Figure 7 At least a portion of the edge of the second polarizer 15, excluding the edge where the third groove C3 is formed, protrudes beyond the edge of the array substrate 112. That is, in the area where the first flexible circuit board 13 is not provided, the edge of the second polarizer 15 can protrude beyond the edge of the liquid crystal display panel 11. Thus, the second polarizer 15 can protect the edge of the liquid crystal display panel 11 from damage caused by impacts during manufacturing. For example, to protect the liquid crystal display panel 11 from damage during manufacturing, the distance between the edge of the second polarizer 15 and the edge of the liquid crystal display panel 11 in this area is greater than or equal to 0.1 mm. For example, it can be 0.1 mm. Therefore, in the area where the first flexible circuit board 13 is not provided, the edge of the first polarizer 14 and the edge of the second polarizer 15 can be flush.

[0107] Alternatively, please refer to Figure 3 and Figure 6 The display module 10 also includes a first chip 16 and a protective layer 17. The first chip 16 is located on the side of the third portion 133 facing away from the frame 121, and is electrically connected to the third portion 133. The first chip 16 is connected to the first coil assembly 1122 via the first flexible circuit board 13, and can be used to control the first coil assembly 1122 to perform read / write operations and short-range communication, i.e., to implement NFC functionality. The protective layer 17 is located on the side of the first chip 16 facing away from the third portion 133, and can protect the first chip 16 from damage, thereby ensuring the normal operation of the first chip 16.

[0108] Alternatively, please refer to Figure 5 , Figure 6 and Figure 7 The frame 121 facing the side of the first flexible circuit board 13 includes: a first region Q1 that overlaps with the first flexible circuit board 13, and a second region Q2 that does not overlap with the first flexible circuit board 13. The first region Q1 has a first groove C1.

[0109] The vertical distance L6 between the side of the protective layer 17 facing away from the first chip 16 and the second region Q2 is less than or equal to 0.3 mm. Since the first chip 16 is located on the side of the third part 133 facing away from the frame 121, the first chip 16 also occupies a portion of the side bezel space. Based on the setting of the first groove C1, a portion of the first flexible circuit board 13 and a portion of the first chip 16 can be set in the first groove C1, thereby reducing the side bezel of the display module and ensuring that the vertical distance L6 meets the specified range.

[0110] Furthermore, the vertical distance L7 between the side of the protective layer 17 facing away from the first chip 16 and the first region Q1 consists of four parts: the size Lg of the gap between the bottom of the first groove C1 and the third part 133, the thickness Le of the first flexible circuit board, the thickness D1 of the first chip 16, and the thickness D2 of the protective layer 17. The typical value (typ) of L7 is 0.37 mm, Lg is 0.1 typ, Le is 0.07 typ, D1 is 0.15 typ, and D2 is 0.05 typ. Therefore, the range of the vertical distance L7 between the side of the protective layer 17 facing away from the first chip 16 and the first region Q1 can be 0.3 mm to 0.45 mm. The typical value is obtained through statistical methods and represents the average or representative value from a large amount of test data. Since the depth La of the first groove C1 is greater than or equal to 1 mm, the range of the vertical distance L6 between the side of the protective layer 17 facing away from the first chip 16 and the second region Q2 can be 0.15 mm to 0.3 mm.

[0111] In another exemplary embodiment, please refer to Figure 8 and Figure 9 , Figure 8 This is a rear view structural diagram of another display module provided in an embodiment of this application. Figure 9 yes Figure 8 A cross-sectional structural diagram of the provided display module ( Figure 9 It can be Figure 8 (A cross-sectional view of the provided display panel at B4-B4 is shown). The display module 10 also includes a second coil assembly 181 located on the side of the backlight component 12 facing away from the liquid crystal display panel 11, and one end of the first flexible circuit board 13 facing away from the conductive part 113 is connected to the second coil assembly 181. The second coil assembly 181 enables the display module to achieve back-side NFC recognition.

[0112] The second coil assembly 181 can be disposed in only a portion of the area, for example, the rear NFC area N2. The placement of the rear NFC area N2 can be arbitrarily set according to the requirements of the NFC sensing area, for example... Figure 8The rear NFC area N2 shown is located near the top of the display module 10. Furthermore, the area of ​​the rear NFC area N2 can be larger than the front NFC area N1 because the first coil assembly 1122 has a certain impact on light transmittance, allowing the second coil assembly 181 to expand the NFC recognition area. Therefore, the first coil assembly 1122 and the second coil assembly 181 enable the display module to have dual-sided NFC recognition, expanding application scenarios and improving user experience.

[0113] Optionally, the display module further includes a flexible film 182, which can be disposed on the side of the backlight component 12 facing away from the liquid crystal display panel 11. The flexible film 182 can be used to support the second coil assembly 181 and serve as insulation protection. For example, the material of the flexible film 182 may include polyimide.

[0114] In addition, to protect the flexible film 182 and the second coil assembly 181, a protective film can be provided to cover the flexible film 182 and the second coil assembly 181, thereby effectively preventing scratches on the flexible film 182 and the second coil assembly 181. For example, the material of the protective film can be polyethylene terephthalate (PET), and the thickness of the protective film is less than or equal to 0.03 mm, which can avoid affecting the overall thickness of the display module.

[0115] Optionally, the display module further includes an optical adhesive layer 193 and a cover plate 194, wherein the optical adhesive layer 193 is used to bond the first polarizer 14 and the cover plate 194, and the cover plate 194 is used to protect the liquid crystal display panel 11. For example, the cover plate 194 can be a glass cover plate, thereby ensuring high light transmittance.

[0116] A gap exists between the optical adhesive layer 193 and the first flexible circuit board 13 to avoid structural interference. Since the optical adhesive layer 193 is a gel and has elasticity, the size L8 of the gap between the optical adhesive layer 193 and the first flexible circuit board 13 ranges from 0 to 0.04 mm; for example, the size L8 can be 0.02 mm. Furthermore, because the thickness Le of the first flexible circuit board is greater than or equal to 0.07 mm, the thickness of the first polarizer 14 is required to be greater than or equal to 0.07 mm.

[0117] Furthermore, considering that the elasticity of the optical adhesive layer 193 is generally 0.2 mm to 0.3 mm, in areas where the first flexible circuit board 13 is not provided, the optical adhesive layer 193 is designed to be recessed from the edge of the liquid crystal display panel 11, and the distance L9 between the optical adhesive layer 193 and the edge of the liquid crystal display panel 11 is greater than or equal to 0.1 mm. For example, the distance L9 can be 0.15 mm, which can prevent dust from being attracted when the edge of the optical adhesive layer 193 protrudes from the edge of the liquid crystal display panel 11.

[0118] Alternatively, please refer to Figure 2 and Figure 10 , Figure 10 yes Figure 2 A cross-sectional structural diagram of the provided display module ( Figure 10 It can be Figure 2 (A cross-sectional view of the provided display panel at B5-B5 is shown). The display module 10 further includes a second flexible circuit board 191, which is bonded to the array substrate 112. The second flexible circuit board 191 can be the main flexible circuit board of the display module. The second flexible circuit board 191 is used to connect the liquid crystal display panel 11 and the main board to control the display and touch functions of the liquid crystal display panel 11. For example, the first flexible circuit board 13 is disposed on the lower side of the liquid crystal display panel 11. A second chip 192 is also disposed on the lower side of the liquid crystal display panel 11. The second chip 192 can be a chip that integrates display control and touch control.

[0119] The second flexible circuit board 191 and the first flexible circuit board 13 are disposed opposite each other on both sides of the liquid crystal display panel 11. For example, the second flexible circuit board 191 is disposed on the upper side of the liquid crystal display panel 11. On the one hand, this avoids the increased bezel size due to wiring when integrating the second flexible circuit board 191 and the first flexible circuit board 13 on the same side, and also avoids the high cost caused by the need for separate customization when integrating NFC functionality into the second chip 192. On the other hand, since both the second flexible circuit board 191 and the first flexible circuit board 13 affect the bezel size, their opposite arrangement ensures that the left and right sides of the liquid crystal display panel 11 are symmetrical, improving the user experience.

[0120] However, this application is not limited to this. The second flexible circuit board 191 and the first flexible circuit board 13 may also be disposed adjacent to each other on both sides of the liquid crystal display panel 11. For example, the second flexible circuit board 191 is disposed on the left or right side of the liquid crystal display panel 11.

[0121] In this application, the specific implementation of the display module may include:

[0122] (1) A first coil assembly is disposed at the gap between multiple pixel electrodes, and the wiring of the first coil assembly is extended to the non-display area.

[0123] (2) A first via is provided on the second substrate at the corresponding position in the non-display area, and a bonding gold finger is provided on the side of the second substrate away from the array substrate.

[0124] (3) The first chip is bonded to the first flexible circuit board and a protective layer is applied for protection.

[0125] (4) The liquid crystal display panel is bonded to the second chip and the second flexible circuit board, and then the first flexible circuit board is bonded to it.

[0126] (5) The cover plate and one side of the optical adhesive layer are pasted together, and the other side of the optical adhesive layer is pasted together with the liquid crystal display panel.

[0127] (6) Assemble the backlight components, ensuring that the light-shielding adhesive applied to the first groove does not extend beyond the edge of the frame.

[0128] (7) The first flexible circuit board is bent and attached to the flexible film and connected to the second coil assembly.

[0129] In summary, this application provides a display module in which a conductive portion is provided in the liquid crystal display panel. Since the conductive portion at least penetrates the portion of the color filter substrate located in the non-display area, one end of the first flexible circuit board can be connected to the first coil assembly through the conductive portion. This avoids direct connection to the first coil assembly on the first substrate of the array substrate, thereby reducing the bezel size of the liquid crystal display panel and enabling the display module to achieve a narrow bezel effect.

[0130] On the other hand, a display device is provided, comprising: a middle shell, and a display module provided in any of the above embodiments.

[0131] Since the display device includes the display module provided in the above embodiments, the display device can also have a similar effect, that is, it can achieve the effect of a narrow bezel.

[0132] Alternatively, the second coil assembly can also be located on the side of the middle housing opposite to the display module, such as the back of the middle housing or the back of the battery. For example, the middle housing may have an opening through which the first flexible circuit board can pass and connect to the second coil assembly, thus improving NFC sensing performance.

[0133] In this application, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. Additionally, the character " / " in this document generally indicates that the preceding and following related objects have an "or" relationship.

[0134] It should be noted that the dimensions of layers and regions may be exaggerated in the accompanying drawings for clarity. Furthermore, it is understood that when an element or layer is referred to as being "on" another element or layer, it can be directly on the other element, or there may be intermediate layers. Additionally, it is understood that when an element or layer is referred to as being "below" another element or layer, it can be directly below the other element, or there may be more than one intermediate layer or element. Furthermore, it is also understood that when a layer or element is referred to as being "between" two layers or two elements, it can be the only layer between the two layers or two elements, or there may be more than one intermediate layer or element. Similar reference numerals throughout indicate similar elements.

[0135] In this application, the terms "first," "second," "third," and "fourth" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. The term "multiple" means two or more, unless otherwise expressly defined.

[0136] The above description is merely an optional embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A display module, characterized in that, The display module includes: a liquid crystal display panel, a backlight component, and a first flexible circuit board; The liquid crystal display panel has a display area and a non-display area. The liquid crystal display panel includes: a color filter substrate and an array substrate disposed opposite to each other; the array substrate includes: a first substrate, and a first coil assembly and a plurality of pixel electrodes distributed on the same side of the first substrate. The first coil assembly has a plurality of grid holes, and the plurality of grid holes correspond one-to-one with at least a portion of the pixel electrodes. The orthographic projection of the pixel electrode on the first substrate is located within the orthographic projection of the corresponding grid hole on the first substrate; and the liquid crystal display panel also has a conductive portion, the conductive portion at least penetrating the portion of the color filter substrate located in the non-display area. The backlight component is located on the side of the array substrate away from the color filter substrate; One end of the first flexible circuit board is connected to the first coil assembly through the conductive part, and the other end of the first flexible circuit board can be bent to the side of the backlight component away from the liquid crystal display panel.

2. The display module according to claim 1, characterized in that, The portion of the color filter substrate located in the non-display area has a first via, and at least a portion of the conductive portion is embedded in the first via. Wherein, the end of the conductive part near the first substrate is electrically connected to the first coil assembly, and the end of the conductive part away from the first substrate is electrically connected to the first flexible circuit board.

3. The display module according to claim 2, characterized in that, The axis of the first via is perpendicular to the first substrate, and the end of the first flexible circuit board connected to the conductive part is located on the side of the color filter substrate away from the array substrate.

4. The display module according to claim 2, characterized in that, The color filter substrate includes: a second substrate, and a color resist layer distributed on one side of the second substrate; the liquid crystal display panel further includes: a sealant and a liquid crystal layer; the sealant is distributed in the non-display area, and the sealant is located between the color filter substrate and the array substrate; the liquid crystal layer is located in the area enclosed by the sealant; The second substrate has the first via, and the sealing adhesive has a second via communicating with the first via; a portion of the conductive part is embedded in the first via, and another portion is embedded in the second via.

5. The display module according to any one of claims 1 to 4, characterized in that, The first flexible circuit board includes: a first portion connected to the conductive portion, a second portion located on the side of the backlight component facing away from the liquid crystal display panel, and a third portion for connecting the first portion and the second portion; The backlight component includes: a frame and a light source located within the frame; the frame has a first groove on the side facing the first flexible circuit board, and at least a portion of the third part is located within the first groove.

6. The display module according to claim 5, characterized in that, The display module further includes: a first polarizer, the first polarizer being located on the side of the color filter substrate away from the array substrate, the first polarizer having a second groove at its edge facing the first flexible circuit board, at least a portion of the first portion being located within the second groove; The depth of the second groove is greater than the depth of the first groove.

7. The display module according to claim 6, characterized in that, The display module further includes: a second polarizer, the second polarizer being located on the side of the array substrate away from the color filter substrate, the second polarizer having a third groove at the edge facing the first flexible circuit board, the third groove communicating with the first groove; The depth of the third groove is greater than or equal to the depth of the first groove, and the depth of the third groove is less than the depth of the second groove.

8. The display module according to claim 7, characterized in that, At least a portion of the edge of the first polarizer, excluding the edge where the second groove is formed, protrudes beyond the edge of the color filter substrate; and / or, at least a portion of the edge of the second polarizer, excluding the edge where the third groove is formed, protrudes beyond the edge of the array substrate.

9. The display module according to claim 5, characterized in that, The bottom of the first groove is flush with the edge of the array substrate facing the first flexible circuit board, and also flush with the edge of the color filter substrate facing the first flexible circuit board; Alternatively, the bottom of the first groove protrudes beyond the edge of the array substrate facing the first flexible circuit board, and also protrudes beyond the edge of the color filter substrate facing the first flexible circuit board.

10. The display module according to claim 5, characterized in that, There is a gap between the bottom of the first groove and the third part.

11. The display module according to claim 5, characterized in that, The display module further includes: a first chip and a protective layer; The first chip is located on the side of the third part away from the frame, and the first chip is electrically connected to the third part; the protective layer is located on the side of the first chip away from the third part.

12. The display module according to claim 11, characterized in that, The frame facing the side of the first flexible circuit board includes: a first region overlapping with the first flexible circuit board, and a second region not overlapping with the first flexible circuit board, wherein the first region has the first groove; The vertical distance between the side of the protective layer facing away from the first chip and the second region is less than or equal to 0.3 mm.

13. The display module according to any one of claims 1 to 4, 6 to 12, characterized in that, The display module further includes a second coil assembly located on the side of the backlight component away from the liquid crystal display panel, and the end of the first flexible circuit board away from the conductive part is connected to the second coil assembly.

14. The display module according to any one of claims 1 to 4, 6 to 12, characterized in that, The display module further includes: a second flexible circuit board, which is bonded to the array substrate; The second flexible circuit board and the first flexible circuit board are disposed opposite each other on both sides of the liquid crystal display panel.

15. A display device, characterized in that, The display device includes: a middle shell, and a display module as described in any one of claims 1 to 14.

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