Display module and display device

Abstract

The application provides a display module and a display device, which comprise a display panel, a flexible circuit board and a drive circuit board; the drive circuit board comprises: a first conductive layer, a second conductive layer and a transmission layer which are arranged in layers; the transmission layer is arranged on the side of the first conductive layer away from the second conductive layer; the orthographic projection of the transmission layer on the first conductive layer is located in the first conductive layer; the transmission layer is provided with a first wiring part and a second wiring part; the first wiring part is electrically connected with the flexible circuit board and at least one of the first conductive layer and the second conductive layer; a first wiring hole is electrically connected with at least one of the first conductive layer and the second conductive layer; the first wiring hole is electrically connected with the second wiring part; the second wiring part is configured to release the electric charge accumulated in the display module; the application releases the electric charge accumulated in the display module by using the second wiring part of the drive circuit board, increases the release path of the electric charge, improves the release efficiency and is beneficial to improving the product quality.

Description

TECHNICAL FIELD

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

[0002] The display module is one of the core components of the display device; in general, the display module has an ESD (electrostatic discharge) protection mechanism for discharging the electric charge in the display module to the outside of the display device to prevent the components of the display panel from being damaged by static electricity; at present, the display module usually uses an FPC (flexible printed circuit) to guide the electric charge generated by the display panel into a driving PCB (printed circuit board), and then uses the ground layer formed by the copper foil arranged between the layers of the driving PCB to guide the electric charge into the main body of the device, so as to realize the discharge and release of the electric charge; however, the ground layer of the driving PCB has limited release capacity for the electric charge, and the release path of the electric charge is relatively single, which makes it difficult to discharge and release the electric charge in time, thereby affecting the product quality of the display module. SUMMARY

[0003] Therefore, the purpose of the present application is to provide a display module and a display device to solve the above-mentioned technical problems.

[0004] In order to achieve the above purpose, the present application provides a display module, comprising: a display panel, a flexible circuit board and a driving circuit board; the display panel is electrically connected with the flexible circuit board, the driving circuit board comprises: a first conductive layer and a second conductive layer which are arranged in layers, and

[0005] a transmission layer, the transmission layer is arranged on the side of the first conductive layer away from the second conductive layer; the orthographic projection of the transmission layer on the first conductive layer is located in the first conductive layer; the transmission layer is provided with a first wiring part and a second wiring part, the first wiring part is electrically connected with the flexible circuit board and at least one of the first conductive layer and the second conductive layer;

[0006] a first wiring hole, which is electrically connected with at least one of the first conductive layer and the second conductive layer; the first wiring hole is electrically connected with the second wiring part, and the second wiring part is configured to release the electric charge accumulated in the driving circuit board.

[0007] Based on the same inventive concept, the present application also provides a display device comprising the display module as described above.

[0008] It can be seen from the above that the display module and the display device provided by the application can transmit the electric charge generated by the display panel to the first conductive layer and the second conductive layer of the driving circuit board through the flexible circuit board, and guide the electric charge of at least one of the first conductive layer and the second conductive layer into the second wiring part through the first wiring hole, so as to release the electric charge accumulated in the display module by the second wiring part of the driving circuit board, increase the release path of the electric charge by the driving circuit board, shorten the release path of the electric charge, prevent damage to components caused by static electricity accumulation, and improve product quality and user experience. BRIEF DESCRIPTION OF DRAWINGS

[0009] In order to more clearly illustrate the technical solutions in the application or the related art, the drawings needed to be used in the embodiments or the related art description will be briefly introduced. Obviously, the drawings in the following description are only embodiments of the application, and other drawings can be obtained by those skilled in the art without creative labor.

[0010] Figure 1 It is a front view of a display module in the related art.

[0011] Figure 2 It is a front view of a display module in the related art. Figure 1 It is an enlarged view of A1 in the related art.

[0012] Figure 3 It is a back view of a display module in the related art.

[0013] Figure 4 It is a structural view of a transmission layer in the related art.

[0014] Figure 5 It is a back view of a display module in the related art. Figure 4 It is an enlarged view of A2 in the related art.

[0015] Figure 6 It is a front view of a display module in the application.

[0016] Figure 7 It is a front view of a display module in the application. Figure 6 It is an enlarged view of B1 in the application.

[0017] Figure 8 It is a back view of a display module in the application.

[0018] Figure 9 It is a structural view of a transmission layer in the application.

[0019] Figure 10 It is a back view of a display module in the application. Figure 9 It is an enlarged view of B2 in the application.

[0020] Figure 11Fig. 2 is a schematic view of the connection between the second wiring portion and the first wiring hole in the present application;

[0021] Figure 12 Fig. 3 is a sectional view of the driving circuit board in the present application;

[0022] Figure 13 Fig. 4 is a schematic view of the distribution of the first connection trace on the driving circuit board in the present application;

[0023] Figure 14 Fig. 5 is a schematic view of the distribution of the second connection trace on the driving circuit board in the present application;

[0024] Figure 15 Fig. 6 is a schematic view of another display module in the present application;

[0025] Figure 16 Fig. 7 is a schematic view of the connection between the second wiring portion and the first wiring hole in the present application; Figure 15 Fig. 8 is an enlarged schematic view of the portion C in Fig. 7.

[0026] Legend of reference numerals:

[0027] 100, display panel;

[0028] 200, flexible circuit board;

[0029] 300, driving circuit board; 300a, first wiring area; 300b, second wiring area; 301, conductive contact; 302, ground hole; 310, first conductive layer; 311, first window area; 320, second conductive layer; 321, second window area; 330, transmission layer; 331, first wiring portion; 332, second wiring portion; 340, first wiring hole; 350, second wiring hole; 360, first connection trace; 370, second connection trace;

[0030] 400, metal back plate;

[0031] 510, first insulating layer; 520, second insulating layer; 530, barrier layer. DETAILED DESCRIPTION

[0032] In order to make the purpose, technical solutions and advantages of the present application clearer, the present application is further described in detail below with reference to specific embodiments and the accompanying drawings.

[0033] Unless otherwise defined, technical terms and scientific terms used in the present application have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. Unless otherwise defined, technical terms and scientific terms used in the present application have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terms "first", "second", and similar terms do not denote any order, quantity, or importance, but are used to distinguish one element from another. The terms "include" or "contain" and similar terms mean that the elements or objects before the term encompass the elements or objects listed after the term and their equivalents, and do not exclude other elements or objects. The terms "connected" or "connected" and similar terms do not mean physical or mechanical connections, but can include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are used only to indicate relative positional relationships, and when the absolute positions of the described objects change, the relative positional relationships may also change accordingly.

[0034] The embodiments of the present application will be described in detail below with reference to the accompanying drawings.

[0035] ESD protection mechanism is one of the important factors to consider the safety of electronic devices, especially in touch panels, display modules and other devices involving human-computer interaction interface; as for the display module, the display module usually adopts LCD (Liquid Crystal Display) or OLED (Organic Light Emitting Diode) panel as the display main body, and adopts the corresponding PCB as the driving circuit board 300; specifically, as shown in Figures 1-3 The display module in the related art usually includes a display panel 100, a flexible circuit board 200 and a driving circuit board 300, the windowed area of the driving circuit board 300, the windowed area is provided with a plurality of conductive pads 301 uniformly arranged, which are used as the wiring contact points of the driving circuit board 300, the flexible circuit board 200 is electrically connected with the driving circuit board 300 through part of the conductive pads 301; wherein the main silver glue point between the display panel 100 and the driving circuit board 300 guides the charge of the display panel 100 into the flexible circuit board 200, and then guides the charge into the driving circuit board 300 through the GND (ground line) in the flexible circuit board 200, so as to release the charge through the ground structure of the driving circuit board 300, thereby achieving the purpose of charge export and release.

[0036] However, there are still certain limitations in applying the above static discharge technology; for example Figure 2 , Figure 4 and Figure 5As shown, first, the charges generated by the display panel 100 are introduced into the flexible circuit board 200 through the silver glue points, then conducted through the printed circuit in the flexible circuit board 200, so that the charges reach the bonding area of the drive circuit board 300, and then transmitted to the ground structure of the drive circuit board 300 through the grounding hole 302 of the drive circuit board 300, and then conducted out through the ground structure of the drive circuit board 300, wherein the ground structure of the drive circuit board 300 can be a conductive layer formed by a copper foil; therefore, when the drive circuit board 300 releases static electricity, the charges received inside the drive circuit board 300 can only flow along a single path and can only be released through the conductive layer; therefore, the applicant finds that the release capacity of the conductive layer for the charges is limited, which limits the release speed of static electricity and increases the risk of static electricity accumulation, especially in a high-humidity or frequently operated environment, if the static electricity accumulates to a certain extent, it may also cause damage to sensitive components during the ESD test or application process.

[0037] More specifically, as shown in Figure 4 and Figure 5 , the drive circuit board 300 uses a conductive layer as a ground structure, and releases the charges to the frame structure of the device by setting an exposed window area on the surface of the drive circuit board 300, and then releases and conducts the charges to the ground through the frame structure, so as to prevent the accumulation of charges from damaging the internal components of the display module. However, the applicant also finds that the above technical solution has a long path for charge release, which can easily lead to slow and insufficient static electricity release, thus the efficiency of charge export is low, especially in an environment that requires rapid and safe dissipation of a large amount of static electricity energy, which affects the reliability and user experience of the product.

[0038] Therefore, the industry is actively exploring improvement measures, aiming to design a more effective and rapid static electricity release mechanism to improve the resistance of the display module to ESD, thereby improving the overall durability and user satisfaction of the device; ensure that static electricity can be quickly and evenly dispersed, reduce the potential threat to sensitive components, and at the same time meet or exceed the ESD test requirements of industry standards.

[0039] In view of this, the display module provided by the present application includes a display panel 100, a flexible circuit board 200, and a drive circuit board 300; the display panel 100 is electrically connected to the flexible circuit board 200; the drive circuit board 300 includes a first conductive layer 310, a second conductive layer 320, and a transmission layer 330 arranged in layers; the transmission layer 330 is arranged on a side of the first conductive layer 310 away from the second conductive layer 320; the transmission layer 330 is in the orthographic projection of the first conductive layer 310; the transmission layer 330 is provided with a first wiring portion 331 and a second wiring portion 332; the first wiring portion 331 can be electrically connected to at least one of the first conductive layer 310 and the second conductive layer 320; the first wiring portion 331 is electrically connected to the flexible circuit board 200; the drive circuit board 300 further includes a first wiring hole 340; the first wiring hole 340 is electrically connected to at least one of the first conductive layer 310 and the second conductive layer 320; the first wiring hole 340 is electrically connected to the second wiring portion 332; the orthographic projection of the first conductive layer 310 does not coincide with the orthographic projection of the transmission layer 330 on the first conductive layer 310; and the second wiring portion 332 is configured to release the electric charge accumulated in the drive circuit board 300.

[0040] As shown in Figures 6-16 The display module provided by the present application has strong ESD resistance; the display module includes a display panel 100, a flexible circuit board 200, and a drive circuit board 300; the display panel 100 can serve as the main display body of the display module and be used to display text, images, and video information; the flexible circuit board 200 is electrically connected to the display panel 100 and the drive circuit board 300, so that the display panel 100 and the drive circuit board 300 are in electrical connection; meanwhile, the display panel 100 generates a large amount of electric charge during testing or application; the electric charge can be introduced into the drive circuit board 300 through the printed circuit in the flexible circuit board 200, so that the electric charge is released by the drive circuit board 300; the drive circuit board 300 has a plurality of components and serves as the driving unit of the entire display module, and is used to drive the display panel 100 to display; the drive circuit board 300 includes a first conductive layer 310 and a second conductive layer 320 arranged in layers, and can be used as the grounding structure of the drive circuit board 300; when the display panel 100 is transmitted to the drive circuit board 300 through the flexible circuit board 200, the drive circuit board 300 can transmit the electric charge to the frame structure of the display module, such as the shell, metal structure, or grounding wire, through the first conductive layer 310 and the second conductive layer 320, so as to guide and release the electric charge in the display module, thereby avoiding the accumulation of electric charge affecting the overall quality of the product.

[0041] In addition, the drive circuit board 300 further comprises a transmission layer 330 and a first wiring hole 340; the transmission layer 330 is arranged on the side of the first conductive layer 310 away from the second conductive layer 320, and the orthographic projection of the transmission layer 330 on the first conductive layer 310 is located in the first conductive layer 310; the transmission layer 330 is provided with a first wiring part 331 and a second wiring part 332, wherein the first wiring part 331 on the transmission layer 330 is electrically connected with the flexible circuit board 200, so as to establish an electrical connection relationship between the drive circuit board 300 and the display panel 100; as shown in Figure 6 and Figure 15 The transmission layer 330 can be used as a wiring area of the drive circuit board 300 to be electrically connected with the printed circuit in the flexible circuit board 200, so as to establish an electrical connection relationship between the display panel 100 and the drive circuit board 300; wherein the first wiring part 331 and the second wiring part 332 of the transmission layer 330 can be exposed on the surface of the drive circuit board 300, so as to facilitate the electrical connection between the flexible circuit board 200 and the drive circuit board 300 through the first wiring part 331; the first wiring part 331 can be provided with a plurality of parts, wherein part of the first wiring part 331 is electrically connected with at least one of the first conductive layer 310 and the second conductive layer 320 through the printed circuit on the drive circuit board 300, so as to transmit the electric charge of the display panel 100 to the first conductive layer 310 and / or the second conductive layer 320; in addition, the first wiring part 331 can be a soldering point or a gold finger contact exposed on the surface of the drive circuit board 300, such as a Functional Pin of the drive circuit board 300, so as to realize the precise connection between the flexible circuit board 200 and the drive circuit board 300.

[0042] The driving circuit board 300 further comprises a first wiring hole 340, the first wiring hole 340 is electrically connected with at least one of the first conductive layer 310 and the second conductive layer 320, at this time, the electric charge introduced into the driving circuit board 300 can flow into at least one of the first conductive layer 310 and the second conductive layer 320; the first wiring hole 340 is electrically connected with the second wiring part 332, and the first wiring hole 340 does not coincide with the orthographic projection of the transmission layer 330 on the first conductive layer 310, when the electric charge flows into at least one of the first conductive layer 310 and the second conductive layer 320, the electric charge in the first conductive layer 310 and / or the second conductive layer 320 can also be introduced into the second wiring part 332 through the first wiring hole 340; since the second wiring part 332 is exposed on the surface of the driving circuit board 300 and is arranged on the transmission layer 330, so that the second wiring part 332 can serve as a release area of the electric charge and directly release the electric charge, since the second wiring part 332 is convenient to be electrically connected with the external grounding structure such as the grounding wire, the second wiring part 332 can be directly electrically connected with the external grounding structure, so as to directly lead out the electric charge through the grounding conductor, thereby releasing the electric charge accumulated in the driving circuit board 300, increasing the release path of the display module to the electric charge, shortening the path of the display module to the electric charge, which is beneficial to improve the release speed and efficiency of the display module to the electric charge, thereby enhancing the resistance of the display module to ESD, improving the product quality and the use experience of the user.

[0043] It should be noted that the second wiring part 332 can be further described in combination with the above-mentioned embodiments; wherein the second wiring part 332 can be a Dummy Pin (placeholder pin) on the surface of the driving circuit board 300, since the Dummy Pin is concentratedly distributed and orderly arranged in the same area with the Functional Pin, and the Dummy Pin is not connected with any component in the driving circuit board 300 and does not carry any electrical function, therefore, a printed circuit can be constructed between the first wiring hole 340 and the second wiring part 332, so that at least one of the first conductive layer 310 and the second conductive layer 320 and the second wiring part 332 are constructed in an electrically connected relationship, so as to transmit the electric charge; when at least one of the first conductive layer 310 and the second conductive layer 320 is electrically connected with the second wiring part 332 through the first wiring hole 340, the electric charge is released through the exposed second wiring part 332, which does not interfere with other printed circuits in the driving circuit board 300, which is beneficial to control the manufacturing cost of the display module.

[0044] In order to shorten the release path of the electric charges, the second wiring part 332 can be directly electrically connected with a ground conductor, and the electric charges are led out through the ground conductor, so as to improve the speed of leading out the electric charges and the release efficiency. Meanwhile, the second wiring part 332 can be sealed by the encapsulation glue, so as to avoid the interference on the surrounding components caused by the release of the electric charges by the second wiring part 332. Since the main purpose of the second wiring part 332 is to release the electric charges in at least one of the first conductive layer 310 and the second conductive layer 320, in order to increase the area of leading out the electric charges, the Dummy Pin can be replaced by one or more than two pads, so as to reduce the connection difficulty between the second wiring part 332 and the ground conductor, and to ensure the release effect of the electric charges.

[0045] In some embodiments, the second wiring part 332 and the first wiring hole 340 are both provided in plurality, and the plurality of second wiring parts 332 are arranged in interval. Any second wiring part 332 is electrically connected with at least one first wiring hole 340.

[0046] As shown in Figures 6-11 , Figure 15 and Figure 16 , for the driving circuit board 300, the transmission area of the driving circuit board 300 can be provided with a plurality of second wiring parts 332, and the driving circuit board 300 can include a plurality of first wiring holes 340. Since the first wiring hole 340 is electrically connected with the second wiring part 332, the number of paths for the first conductive layer 310 and the second conductive layer 320 to conduct the electric charges to the second wiring part 332 can be increased. For the second wiring part 332, the plurality of second wiring parts 332 can also be arranged in interval, and any second wiring part 332 is electrically connected with at least one first wiring hole 340. Thus, the second wiring part 332 can be electrically connected with the first wiring hole 340 at different positions of the driving circuit board 300, so that the electric charges accumulated at different positions of the driving circuit board 300 can flow into the second wiring part 332 through the first wiring hole 340, and the electric charges are released through the second wiring part 332, so as to avoid the uneven distribution of the electric charges in the driving circuit board 300, and to affect the release effect of the electric charges.

[0047] In some embodiments, the driving circuit board 300 is divided into a first wiring area 300a and a second wiring area 300b by the transmission layer 330 in the orthographic projection of the first conductive layer 310, and the plurality of first wiring holes 340 are arranged in the first wiring area 300a and the second wiring area 300b, respectively.

[0048] As shown in Figure 6 , Figure 7 , Figure 11 , Figure 15 and Figure 16As shown, in terms of the driving circuit board 300, the driving circuit board 300 includes the transmission layer 330, the first conductive layer 310, and the second conductive layer 320, the transmission layer 330 can divide the driving circuit board 300 into the first wiring area 300a and the second wiring area 300b in the orthographic projection of the first conductive layer 310, and the first wiring area 300a and the second wiring area 300b both distribute a plurality of first wiring holes 340; since the first wiring hole 340 is electrically connected with the second wiring part 332, the first wiring part 331 can be used to simultaneously utilize the first wiring holes 340 distributed in the first wiring area 300a and the second wiring area 300b, increase the use quantity of the first wiring holes 340, improve the utilization rate of the first wiring holes 340, and be beneficial to improving the release efficiency of the electric charge by the first conductive layer 310 and the second conductive layer 320 in the driving circuit board 300, so as to realize higher electrical efficiency in the limited space, and meet the stringent requirements of the display module.

[0049] In some embodiments, the driving circuit board 300 further includes a plurality of second wiring holes 350, and the plurality of second wiring holes 350 are respectively arranged in the first wiring area 300a and the second wiring area 300b; the flexible circuit board 200 is electrically connected with at least one of the first conductive layer 310 and the second conductive layer 320 through the plurality of second wiring holes 350.

[0050] As shown in Figure 13 and Figure 14 As shown, in terms of the driving circuit board 300, the driving circuit board 300 further includes a plurality of second wiring holes 350; wherein the first wiring part 331 is connected with the flexible circuit board 200, and can transfer the electric charge accumulated in the display panel 100 to the driving circuit board 300 through the flexible circuit board 200; specifically, the driving circuit board 300 includes the first conductive layer 310 and the second conductive layer 320, and can form a release channel of the electric charge in cooperation with the second wiring part 332 in the transmission layer 330, so as to guide the electric charge out of the display module, and avoid damaging the components of the display module due to the accumulation of the electric charge; more specifically, a plurality of second wiring holes 350 are arranged on the first wiring area 300a and the second wiring area 300b of the driving circuit board 300, and the plurality of second wiring holes 350 can ensure that the electric charge introduced from the flexible circuit board 200 can smoothly reach the first conductive layer 310 and / or the second conductive layer 320 through the second wiring holes 350, and be beneficial to timely guiding and releasing the electric charge by the first conductive layer 310, the second conductive layer 320, and the second wiring part 332, and maintaining the stability and reliability of the display module.

[0051] In some embodiments, the driving circuit board 300 further comprises a first connecting trace 360 extending away from the first wiring part 331; the first connecting trace 360 is electrically connected with the first wiring part 331 and the second wiring hole 350 in the first wiring area 300a respectively.

[0052] As shown in Figure 13 As shown in FIG. 4, for the driving circuit board 300, after the flexible circuit board 200 delivers the electric charges to the first wiring part 331 provided on the transmission layer 330, the first wiring part 331 can be electrically connected with the second wiring hole 350 through the printed circuit, so that the first wiring part 331 can guide the electric charges into at least one of the first conductive layer 310 and the second conductive layer 320 through the second wiring hole 350 in the first wiring area 300a, so as to release the electric charges; wherein one end of the first connecting trace 360 is electrically connected with the first wiring part 331, for receiving the electric charges delivered by the flexible circuit board 200 and serving as a transmission channel; at the same time, in order to optimize the distribution of the electric charges and avoid the problem of uneven distribution of the electric charges in the first conductive layer 310 and the second conductive layer 320, the first connecting trace 360 can extend away from the first wiring part 331, so that the first connecting trace 360 can be electrically connected with the second wiring hole 350 at different positions in the first wiring area 300a, so as to ensure the uniform distribution of the electric charges in the first conductive layer 310 and the second conductive layer 320, improve the release efficiency of the display panel 100 to the electric charges, and be beneficial to ensuring the performance stability of the display module.

[0053] In some embodiments, the driving circuit board 300 further comprises a second connecting trace 370 electrically connected with the first connecting trace 360 at opposite ends of the first wiring part 331 respectively; the second connecting trace 370 is electrically connected with a plurality of second wiring holes 350 in the second wiring area 300b respectively.

[0054] As shown in Figure 14As shown, in terms of the driving circuit board 300, in addition to the second wiring hole 350 in the first wiring area 300a, the second wiring hole 350 in the second wiring area 300b can also be used to increase the number of charge transmission paths from the flexible circuit board 200 to the driving circuit board 300; in terms of the first connection trace 360 and the second connection trace 370, the two traces can be electrically connected to opposite ends of the first wiring part 331 respectively, so that after the charge flows into the first wiring part 331, it can be transmitted to the first wiring area 300a and the second wiring area 300b through the first connection trace 360 and the second connection trace 370 respectively; specifically, since the second wiring area 300b is relatively narrow, one second connection trace 370 can be electrically connected to multiple second wiring holes 350 distributed in the second wiring area 300b at the same time, which is beneficial to optimizing the wiring space of the driving circuit board 300, reducing the design difficulty of the surface circuit of the driving circuit board 300, and also beneficial to improving the transmission efficiency and stability of the charge.

[0055] In some embodiments, the first conductive layer 310 is provided with a first windowing area 311 on the side close to the transmission layer 330, and the first windowing area 311 is not overlapped with the projection of the transmission layer 330 on the projection of the first conductive layer 310.

[0056] As shown in Figure 6 and Figure 15 As shown, in terms of the display panel 100, the display panel 100 can transmit the charge generated by itself to the driving circuit board 300 through the flexible circuit board 200, so as to release the charge through the first conductive layer 310, the second conductive layer 320 and the second wiring part 332 in the driving circuit board 300; specifically, the first conductive layer 310 is provided with a first windowing area 311 on the side close to the transmission layer 330, the first windowing area 311 is exposed on the surface of the first conductive layer 310, and the projection of the first windowing area 311 on the first conductive layer 310 is located in the first conductive layer 310; the projection of the first windowing area on the first conductive layer 310 is not overlapped with the projection of the transmission layer 330 on the first conductive layer 310, that is, the charge in the first wiring part 331 and its vicinity can be released through the second wiring part 332, or the charge in the first conductive layer 310 can be released through the first windowing area 311, so as to improve the release speed of the charge by the driving circuit board 300.

[0057] In addition, since the first windowing area 311 is exposed on the surface of the first conductive layer 310, the first windowing area 311 can also increase the heat dissipation efficiency of the driving circuit board 300, so that heat can be dissipated in time, avoiding the influence of high temperature of the driving circuit board 300 on the normal use of the display module.

[0058] In some embodiments, the display module further includes a metal back plate 400, which is disposed on the backlight side of the display panel 100 and its orthographic projection is located within the display panel 100; the metal back plate 400 is connected to the second conductive layer 320.

[0059] like Figure 8 As shown, during the operation of the display module, the display panel 100 generates significant heat due to high power consumption. To ensure the stable operation of the display panel 100 in the display module, it is necessary to dissipate the heat of the display panel 100 in a timely manner. A metal backplate 400 can be configured on the backlight side of the display panel 100, and the metal backplate 400 is tightly attached to the backlight side of the panel, serving as a heat conduction medium for the display panel 100. It can quickly absorb and disperse the heat generated by the display panel 100 during display activities, enabling the display module to dissipate heat efficiently. At the same time, the metal backplate 400 can also have an electrostatic protection function. Specifically, since the metal backplate 400 is connected to the second conductive layer 320 of the driving circuit board 300, a conductive path can be formed, which can guide the charge from the driving circuit board 300 to the entire display module, ensuring the rapid release of charge and avoiding problems such as image distortion or damage to electronic components caused by charge accumulation inside the module. This is beneficial to improving the overall performance and reliability of the display module.

[0060] In some embodiments, a second window area 321 is provided on the side of the second conductive layer 320 away from the transmission layer 330, and the second conductive layer 320 is connected to the metal back plate 400 through the second window area 321.

[0061] like Figure 8 As shown, specifically, the second window area 321 is located on the side of the second conductive layer 320 away from the transmission layer 330, and its orthographic projection onto the second conductive layer 320 is located within the second conductive layer 320, thus preventing short circuits between the second conductive layer 320 and other components. Furthermore, the orthographic projection of the second window area 321 onto the first conductive layer 310 does not coincide with the orthographic projection of the transmission layer 330 onto the first conductive layer 310, ensuring the independence of the second window area 321 and reducing its interference. Moreover, the second window area 321 is connected to the metal backplate 400 via the second wiring portion 332, effectively releasing the charge accumulated in the first wiring portion 331 and its surrounding area, enhancing the safety and stability of the drive circuit board 300, and reducing potential problems caused by charge accumulation.

[0062] In addition, since the second window area 321 is exposed on the surface of the second conductive layer 320, the second window area 321 can be used to transfer heat from the driving circuit board 300 to the metal back plate 400, thereby increasing the heat dissipation efficiency of the driving circuit board 300 so that the heat can be dissipated in time and the display module can be used normally.

[0063] In some embodiments, the drive circuit board 300 further includes a first insulating layer 510, a second insulating layer 520, and a barrier layer 530; such as Figure 12 As shown, the first insulating layer 510 can be disposed on the side of the first conductive layer 310 away from the second conductive layer 320, and on the same side as the first window area 311. The orthographic projection of the first insulating layer 510 onto the first conductive layer 310 does not coincide with the first window area 311, so that the first insulating layer 510 covers the first conductive layer 310. The first insulating layer 510 can provide electrical insulation and protection for the first conductive layer 310. Similarly, the second insulating layer 520 is disposed on the side of the second conductive layer 320 away from the first conductive layer 310, and on the same side as the second window area 321. The second insulating layer 520 onto the second conductive layer 310 away from the first conductive layer 320, and on the same side as the second window area 321. The orthographic projection of 20 does not coincide with the second window area 321, so that the second insulating layer 520 covers the second conductive layer 320, thereby providing electrical insulation and protection for the second conductive layer 320 and protecting the entire drive circuit board 300. The barrier layer 530 can be disposed between the first conductive layer 310 and the second conductive layer 320, which can block the first conductive layer 310 and the second conductive layer 320 to form a corresponding accommodating space between them, which facilitates wiring of the drive circuit board 300, improves the wiring complexity of the drive circuit board 300, and enhances the electrical function of the drive circuit board 300.

[0064] It should be noted that the first insulating layer 510 and the second insulating layer 520 mentioned above can be formed using green oil, and can be coated onto the surfaces of the first conductive layer 310 and the second conductive layer 320 by a coating process. The cost is low and the process is simple, so it will not be described in detail here.

[0065] Based on the same inventive concept, this application also provides a display device, which includes the display module as described above; since the display device uses the display module described above, it has all the advantages and beneficial effects of the display module; for example, the display device can be a mobile phone, computer, self-service kiosks, video screens and vehicle displays with interactive display functions, etc., which will not be described in detail here.

[0066] It should be noted that the above description describes some embodiments of this application. Other embodiments are within the scope of the appended claims. In some cases, the actions or steps recorded in the claims can be performed in a different order than that shown in the above embodiments and still achieve the desired result. Furthermore, the processes depicted in the drawings do not necessarily require a specific or sequential order to achieve the desired result. In some embodiments, multitasking and parallel processing are also possible or may be advantageous.

[0067] Each of the embodiments in the present application is described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the embodiments can be mutually referred to.

[0068] The description in the present application is given for the purpose of illustration and description, and is not intended to be exhaustive or to limit the present application to the form disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art. Embodiments are chosen and described in order to best explain the principles of the present application and its practical application, and to enable others skilled in the art to understand the present application in order to design various embodiments with various modifications for particular uses according to the principles of the present application.

[0069] Those of ordinary skill in the art should understand that the above discussion of any of the embodiments is only exemplary, and is not intended to imply that the scope of the present application (including the claims) is limited to these examples; the above embodiments or technical features between different embodiments can also be combined, the steps can be implemented in any order, and there are many other changes to the aspects of the embodiments of the present application as described above, which are not provided in detail for the sake of brevity.

[0070] Although the present application has been described in conjunction with the specific embodiments thereof, it is to be understood that many alternatives, modifications and variations will be apparent to those skilled in the art in the light of the foregoing description.

[0071] The embodiments of the present application are intended to cover all such alternatives, modifications and variations as falling within the broad scope of the appended claims. Accordingly, any omission, modification, equivalent replacement, improvement, etc. made in the spirit and principle of the embodiments of the present application should be included in the protection scope of the present application.

Claims

1. A display module, characterized by The display module comprises: a display panel, a flexible circuit board and a driving circuit board; the display panel is electrically connected with the flexible circuit board, and the driving circuit board comprises: a first conductive layer and a second conductive layer which are arranged in a stack, and a transmission layer which is arranged on a side of the first conductive layer away from the second conductive layer; the transmission layer is in the orthographic projection of the first conductive layer within the first conductive layer; the transmission layer is provided with a first wiring part and a second wiring part, the first wiring part is electrically connected with the flexible circuit board and at least one of the first conductive layer and the second conductive layer; wherein the first wiring part and the second wiring part are exposed on the surface of the driving circuit board, the first wiring part and the second wiring part are both pins, the first wiring part is a functional pin of the driving circuit board and is used to connect with the flexible circuit board; the second wiring part is a placeholder pin of the driving circuit board and is not connected with any electrical functional component, the placeholder pins are distributed in a cluster and are orderly arranged with the functional pins in the transmission layer; a first wiring hole which is electrically connected with at least one of the first conductive layer and the second conductive layer; the first wiring hole is electrically connected with the second wiring part, and both of them are provided with a plurality of first wiring holes, the second wiring parts are arranged at intervals, and any second wiring part is electrically connected with at least one first wiring hole; the second wiring part is configured to release the accumulated electric charge of the driving circuit board.

2. The display module of claim 1, wherein, The driving circuit board is divided into a first wiring area and a second wiring area by the orthographic projection of the first conductive layer on the transmission layer, and a plurality of first wiring holes are arranged in the first wiring area and the second wiring area, respectively.

3. The display module of claim 2, wherein, The driving circuit board further comprises: a plurality of second wiring holes which are arranged in the first wiring area and the second wiring area, respectively; the flexible circuit board is electrically connected with at least one of the first conductive layer and the second conductive layer through the plurality of second wiring holes.

4. The display module of claim 3, wherein, The driving circuit board further comprises: a first connection trace which extends away from the first wiring part; the first connection trace is electrically connected with the first wiring part and the second wiring hole of the first wiring area, respectively.

5. The display module of claim 4, wherein, The driving circuit board further comprises: a second connection trace which is electrically connected with opposite ends of the first wiring part and the first connection trace, respectively, and is electrically connected with a plurality of second wiring holes in the second wiring area, respectively.

6. The display module of claim 1, wherein, A first window area is arranged on a side of the first conductive layer close to the transmission layer, and the orthographic projection of the first window area on the first conductive layer does not coincide with the orthographic projection of the transmission layer on the first conductive layer.

7. The display module of claim 1, wherein, Further comprising: a metal back plate which is arranged on the backlight side of the display panel and in the orthographic projection of the display panel within the display panel; the metal back plate is connected with the second conductive layer.

8. The display module of claim 7, wherein, A second window area is arranged on a side of the second conductive layer away from the transmission layer, and the second conductive layer is connected with the metal back plate through the second window area.

9. A display device, characterized by comprising: The display module comprises the display module as claimed in any one of claims 1-8.

Images