Display module and display device

Abstract

The application discloses a display module and a display device, and relates to the technical field of display, which comprises an array substrate, a GOA driving unit and a light guide module; the array substrate comprises an incident light surface arranged towards a backlight module, the periphery of the incident light surface is a wiring area, and the inner periphery is an incident light area; the GOA driving unit is arranged in the wiring area; and the light guide module is arranged between the array substrate and the GOA driving unit and is used for conducting backlight light emitted by the backlight module to the wiring area. According to the scheme, the GOA driving unit is arranged in the wiring area on the back of the array substrate, so that the occupation of the side area of the array substrate is reduced, and the display area is expanded; and the light guide module is arranged between the array substrate and the GOA driving unit, so that the backlight light projected by the backlight module in the lateral direction can be accurately introduced into the wiring area, thereby the illumination intensity of the wiring area can be improved, the problem of insufficient brightness of the wiring area caused by the shielding of the GOA driving unit is solved, and the uniformity of the overall brightness of the display area is ensured.

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] Liquid crystal displays (LCDs) have become mainstream display products and are widely used due to their advantages such as thinness, energy efficiency, and low radiation. Most LCDs on the market today are backlit LCDs, which consist of an LCD panel and a backlight module. The working principle of an LCD panel is to place liquid crystal molecules between two parallel glass substrates and apply a driving voltage to the two glass substrates to control the rotation direction of the liquid crystal molecules. This modulates the light emitted from the backlight module to form an image.

[0003] To enhance the unified visual experience, narrow bezels and borderless designs have gradually become important development directions for LCD displays. Following this trend, GOA (Gate Driver on Array) circuits have been widely adopted. GOA circuits use the same film deposition process as the thin-film transistors (TFTs) within the array substrate, and are fabricated simultaneously with the internal structure of the array substrate. This eliminates the cost of scan line driver chips and eliminates the need to solder flexible circuit boards to the edges of the LCD panel, thus reducing bezel width and simplifying module structure design.

[0004] However, traditional GOA circuits require etching signal lines on the side of the array substrate, which is prone to breakage due to process variations. Furthermore, the need to occupy space on the side of the array substrate makes it difficult to achieve truly narrow bezels and bezel-less designs. To address this, researchers attempted to move the GOA circuit to the back of the array substrate to reduce the space occupied on the side. However, this rear-mounted GOA circuit solution obstructs the optical path of the backlight module, reducing the light transmittance at the location of the GOA circuit. This disrupts the uniformity and consistency of brightness, negatively impacting the overall display effect. Summary of the Invention

[0005] The main objective of this application is to propose a display module that addresses the technical problem that a rear-mounted GOA circuit would obstruct the light path of the backlight module, causing a decrease in the light transmittance at the location of the GOA circuit, thereby disrupting the uniformity and consistency of brightness and adversely affecting the overall display effect.

[0006] To achieve the above objectives, this application proposes a display module, the display module comprising:

[0007] An array substrate, the array substrate including a light incident surface disposed toward a backlight module, the periphery of the light incident surface being a wiring area, and the inner periphery of the light incident surface being a light incident area;

[0008] GOA drive unit, wherein the GOA drive unit is disposed in the wiring area;

[0009] A light guide module is disposed between the array substrate and the GOA driving unit; the light guide module is used to guide the backlight light emitted by the backlight module to the wiring area.

[0010] In one embodiment, the backlight module includes a backlight source and an optical film assembly, the optical film assembly covering the backlight source; the optical film assembly has a forward light guide and a side light guide, the forward light guide is used to project a portion of the backlight light emitted by the backlight source vertically to the light incident area, and the side light guide is used to project a portion of the backlight light emitted by the backlight source laterally to the light guide module.

[0011] In one embodiment, the light guide module includes an optical film structure and a light guide structure;

[0012] The optical film structure is disposed between the array substrate and the GOA driving unit, and the optical film structure surrounds the backlight module; the light guide structure is disposed on the side of the optical film structure facing away from the array substrate, and the light guide structure surrounds the backlight module.

[0013] The light guide structure is used to guide the backlight light emitted by the backlight module to the optical film structure, so as to diffuse the backlight light to the wiring area through the optical film structure.

[0014] In one embodiment, the display module further includes a self-emissive module disposed between the array substrate and the GOA driving unit, the self-emissive module being used to compensate for the light intensity of the wiring area through self-emission.

[0015] In one embodiment, the self-emissive module is configured as a self-emissive functional layer, which includes an electron functional layer, an organic light-emitting layer, and a hole functional layer stacked sequentially from bottom to top.

[0016] The display module further includes a conductive layer disposed between the array substrate and the hole functional layer, the conductive layer serving as the anode of the self-emissive functional layer; the GOA driving unit includes multiple metal traces serving as the cathode of the self-emissive functional layer.

[0017] The metal traces, the electronic functional layer, the organic light-emitting layer, the hole functional layer, and the conductive layer together constitute an OLED light-emitting unit.

[0018] In one embodiment, the self-emissive functional layer is configured as a plurality of spaced first strip structures, which are spacedly embedded in the optical film structure. The first strip structures and the metal traces at least partially overlap in the orthographic projection area of ​​the array substrate.

[0019] In one embodiment, the self-emissive module has a through-hole, the two ends of which are connected to the in-plane signal line of the array substrate and the GOA driving unit, respectively; the through-hole is filled with a conductive material, and the in-plane signal line is electrically connected to the GOA driving unit through the conductive material.

[0020] In one embodiment, the conductive material is configured as nano-silver.

[0021] In one embodiment, the display module further includes a heat dissipation bracket, which is connected to the GOA driving unit and the conductive material, and the heat dissipation bracket is provided with a liquid cooling channel.

[0022] This application also proposes a display device, which includes a display module as described above.

[0023] The display module proposed in this application places the GOA driving unit in the wiring area on the back of the array substrate to reduce the occupation of the side area of ​​the array substrate, further reducing the bezel width of the display device and increasing the display area without changing the overall size of the display device. A light guide module is set between the array substrate and the GOA driving unit to adjust the light path and accurately guide the backlight light projected from the backlight module along the adjusted propagation path into the wiring area. This can significantly improve the illumination intensity of the wiring area, solve the problem of insufficient brightness in the wiring area caused by the obstruction of the GOA driving unit, and form a supplementary light effect on the edge of the display area, ensuring the uniformity and consistency of the overall brightness of the display area. This improves the display effect while achieving narrow bezel and bezel-less design. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0025] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the display module provided in this application;

[0026] Figure 2A cross-sectional structural diagram of the wiring area in one embodiment of the display module provided in this application;

[0027] Figure 3 This is a partial cross-sectional structural diagram of an embodiment of the display module provided in this application;

[0028] Figure 4 A cross-sectional structural diagram of the backlight module in one embodiment of the display module provided in this application.

[0029] Explanation of icon numbers:

[0030] 100. Liquid crystal layer; 200. Color filter; 300. Color filter;

[0031] 1. Array substrate; 11. Pixel area; 12. Light-incident surface; 121. Wiring area; 122. Light-incident area;

[0032] 2. Backlight module; 21. Backlight source; 22. Optical film assembly; 23. First reflective sheet; 22a. Forward light guide section; 22b. Side light guide section; 221. First light guide plate; 222. First lower diffuser sheet; 223. First prism sheet; 224. First upper diffuser sheet;

[0033] 3. GOA drive unit;

[0034] 4. Light guide module; 41. Optical film structure; 42. Light guide structure; 411. Second lower diffuser; 412. Second prism sheet; 413. Second upper diffuser; 421. Second light guide plate; 422. Second reflector;

[0035] 5. Self-emissive module; 51. Self-emissive functional layer; 511. Electronic functional layer; 512. Organic light-emitting layer; 513. Hole functional layer;

[0036] 6. Conductive layer; 7. Interconnect vias; 8. Conductive material; 9. Heat sink support.

[0037] The realization of the purpose, functional features and advantages of this application will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0038] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0039] It should be noted that if the embodiments of this application involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.

[0040] Furthermore, if the embodiments of this application involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or" or "and / or" throughout the text includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution that simultaneously satisfies A and B. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed in this application.

[0041] Liquid crystal displays (LCDs) have become mainstream display products and are widely used due to their advantages such as thinness, energy efficiency, and low radiation. Most LCDs on the market today are backlit LCDs, which consist of an LCD panel and a backlight module. The working principle of an LCD panel is to place liquid crystal molecules between two parallel glass substrates and apply a driving voltage to the two glass substrates to control the rotation direction of the liquid crystal molecules. This modulates the light emitted from the backlight module to form an image.

[0042] To enhance the unified visual experience, narrow bezels and borderless designs have gradually become important development directions for LCD displays. Following this trend, GOA (Gate Driver on Array) circuits have been widely adopted. GOA circuits use the same film deposition process as the thin-film transistors (TFTs) within the array substrate, and are fabricated simultaneously with the internal structure of the array substrate. This eliminates the cost of scan line driver chips and eliminates the need to solder flexible circuit boards to the edges of the LCD panel, thus reducing bezel width and simplifying module structure design.

[0043] However, traditional GOA circuits require etching signal lines on the side of the array substrate, which is prone to breakage due to process variations. Furthermore, the need to occupy space on the side of the array substrate makes it difficult to achieve truly narrow bezels and bezel-less designs. To address this, researchers attempted to move the GOA circuit to the back of the array substrate to reduce the space occupied on the side. However, this rear-mounted GOA circuit solution obstructs the optical path of the backlight module, reducing the light transmittance at the location of the GOA circuit. This disrupts the uniformity and consistency of brightness, negatively impacting the overall display effect.

[0044] To address the aforementioned issues, this application proposes a display module that places the GOA driving unit at the edge of the back side of the array substrate. Simultaneously, a light guide module guides the backlight emitted by the backlight module to the area where the GOA driving unit is located. The self-emissive nature of the light guide module compensates for the illumination intensity in the area where the GOA driving unit is located. This approach achieves a back-mounted GOA driving unit solution while selectively increasing the brightness of the area where the GOA driving unit is located, maintaining the consistency of the overall display effect.

[0045] Please see Figure 1 An embodiment of this application provides a display module comprising:

[0046] The array substrate 1 includes a light-incident surface 12 disposed facing the backlight module 2. The periphery of the light-incident surface 12 is a wiring area 121, and the inner periphery of the light-incident surface 12 is a light-incident area 122.

[0047] GOA drive unit 3, GOA drive unit 3 is located in wiring area 121;

[0048] The light guide module 4 is disposed between the array substrate 1 and the GOA driving unit 3; the light guide module 4 is used to guide the backlight light emitted by the backlight module 2 to the wiring area 121.

[0049] In this embodiment, with Figure 1Taking the orientation shown as an example, the backlight module 2 is horizontally positioned with its light emission direction facing upwards, and the array substrate 1 is positioned above the backlight module 2. The side of the array substrate 1 facing away from the backlight module 2 constitutes a pixel area 11, which is composed of many tiny pixels. Each pixel is further subdivided into three subpixels: red (R), green (G), and blue (B). These subpixels control the light transmittance through the liquid crystal layer 100, the color filter 200, and the color filter 300 (CF), thereby forming images of various colors. Specifically, the liquid crystal layer 100 is disposed on the side of the array substrate 1 facing away from the backlight module 2. The liquid crystal layer 100 is composed of liquid crystal molecules, which can change their alignment direction under the action of an electric field, thereby controlling the transmittance of the backlight light. Color filters 200 are located above the liquid crystal layer 100. The red filter (R) allows only red light to pass through, the green filter (G) allows only green light to pass through, and the blue filter (B) allows only blue light to pass through. Based on the filtering effect of the color filters 200, each sub-pixel can emit light of a specific color. The color filter 300 (CF) may include filters and other optical compensation layers. It not only ensures that each sub-pixel only transmits light of a specific color, but also optimizes the light distribution through the optical compensation layers, reducing color difference and improving display quality.

[0050] The side of the array substrate 1 facing the backlight module 2 forms a light-incident surface 12. The periphery of the light-incident surface 12 refers to the annular area at the edge of the light-incident surface 12. This annular area serves as the wiring area 121 for placing the GOA driving unit 3. This is equivalent to transferring the GOA driving unit 3, which is traditionally located on the side of the array substrate 1, to the back of the array substrate 1, reducing the occupation of the side area of ​​the array substrate 1. This can further reduce the bezel width of the display device by 5-8mm, realizing a narrow bezel or bezel-less design, and increasing the display area without changing the overall size of the display device. The GOA driving unit 3 is integrated into the wiring area 121 using the same film deposition process as the thin-film transistors (TFTs) in the array substrate 1. Its main function is to generate and transmit gate signals, and to activate each thin-film transistor through scanning, so that the corresponding pixels can receive data signals and display the correct brightness and color.

[0051] The inner perimeter of the light-incident surface 12 refers to the central region on the light-incident surface 12 that is surrounded by the wiring area 121. This central region is arranged opposite to the backlight module 2 to form the light-incident area 122.

[0052] like Figure 1As shown, the backlight module 2 is located within the orthogonal projection area of ​​the light-receiving area 122. The backlight module 2 can adopt a direct-lit backlight mode, and the light emission range of the backlight module 2 forms a fan-shaped area. Specifically, a portion of the backlight emitted by the backlight module 2 is located within the orthogonal projection area of ​​the light-receiving area 122. This portion of the backlight can be projected upwards to the central area of ​​the array substrate 1 after being processed by the corresponding optical structure. The other portion of the backlight emitted by the backlight module 2 can be projected laterally from the light-receiving area 122 to the wiring area 121 under normal conditions. This portion of the backlight is then projected onto the peripheral area of ​​the array substrate 1 after passing through the wiring area 121. Based on the above configuration, under normal use, the display brightness of the central area and the peripheral area of ​​the array substrate 1 tends to be consistent, and the array substrate 1 as a whole presents a uniform brightness display effect.

[0053] In this embodiment, since the GOA driving unit 3 is moved from the side of the array substrate 1 to the back of the array substrate 1, the back-mounted GOA driving unit 3 will block the backlight light projected from the light incident area 122 to the wiring area 121. This makes it difficult for the backlight light to enter the wiring area 121 normally according to the original light path, resulting in a decrease in the illumination intensity of the wiring area 121. Consequently, the display brightness of the outer area of ​​the array substrate 1 is significantly lower than that of the central area, which destroys the uniformity and consistency of the display brightness.

[0054] To address this issue, this embodiment further includes a light guide module 4 positioned between the array substrate 1 and the GOA driving unit 3. Specifically, the light guide module 4 has at least a light-incident portion facing the backlight module 2 and a light-outcident portion facing the wiring area 121. The light guide module 4 can use corresponding optical devices to refract and scatter the backlight light, thereby adjusting the propagation path of the backlight light so that it can bypass the GOA driving unit 3 and smoothly enter the wiring area 121. Based on this structural configuration, when a portion of the backlight light emitted from the backlight module 2 is laterally projected from the light-incident area 122 to the wiring area 121, this portion of the backlight light will first enter the light guide module 4. Under the guidance of the light guide module 4, the backlight light entering the light guide module 4 will exit along the adjusted propagation path. That is, this portion of the backlight light can bypass the GOA driving unit 3 and smoothly enter the wiring area 121 along the adjusted propagation path, thus solving the problem of the GOA driving unit 3 blocking the backlight light and enhancing the illumination of the wiring area 121.

[0055] Based on the above-mentioned settings of the light guide module 4, the backlight light projected from the backlight module 2 along the side can be accurately guided into the wiring area 121 along the adjusted propagation path, thereby significantly improving the illumination intensity of the wiring area 121, solving the problem of insufficient brightness in the wiring area 121 caused by the obstruction of the GOA driving unit 3, ensuring the uniformity and consistency of the overall brightness of the display area, and improving the display effect while realizing the narrow bezel and bezel-less design.

[0056] Therefore, the display module provided in this embodiment places the GOA driving unit 3 in the wiring area 121 on the back of the array substrate 1 to reduce the occupation of the side area of ​​the array substrate 1, further reducing the bezel width of the display device and increasing the display area without changing the overall size of the display device. A light guide module 4 is set between the array substrate 1 and the GOA driving unit 3 to adjust the light path and accurately guide the backlight light projected by the backlight module 2 along the adjusted propagation path into the wiring area 121. This can significantly improve the illumination intensity of the wiring area 121, solve the problem of insufficient brightness in the wiring area 121 caused by the obstruction of the GOA driving unit 3, and form a supplementary light effect on the edge of the display area, ensuring the uniformity and consistency of the overall brightness of the display area. This improves the display effect while realizing the narrow bezel and bezel-less design.

[0057] In one embodiment, refer to Figure 1 , Figure 3 and Figure 4 The backlight module 2 includes a backlight source 21 and an optical film assembly 22, the optical film assembly 22 covering the backlight source 21; the optical film assembly 22 has a forward light guide 22a and a side light guide 22b, the forward light guide 22a is used to project a portion of the backlight light emitted by the backlight source 21 vertically to the light incident area 122, and the side light guide 22b is used to project a portion of the backlight light emitted by the backlight source 21 laterally to the light guide module 4.

[0058] Specifically, the backlight 21 can be a light-emitting device such as a light-emitting diode, and multiple backlights 21 are arranged in an array along a horizontal plane, with the light emission direction of the backlight 21 facing the array substrate 1.

[0059] like Figure 4 As shown, the optical film assembly 22 may include a first light guide plate 221, a first lower diffuser 222, a first prism sheet 223, and a first upper diffuser 224, which are sequentially stacked on the backlight 21. The first light guide plate 221 is used to uniformly transmit the backlight emitted by the backlight 21 to the target area. The main function of the first lower diffuser 222 is to initially diffuse the light, reducing light concentration and uneven distribution, allowing the light to enter the subsequent optical film layers more evenly. The first prism sheet 223 can adjust the direction of the light through its optical structure (such as a microprism array), enabling the light to be transmitted to the display area more effectively, improving light utilization and transmission efficiency. The first upper diffuser 224 can further diffuse the light adjusted by the first prism sheet 223, ensuring uniform light distribution in the display area, reducing light scattering and unevenness, and ultimately improving the uniformity of brightness throughout the display area.

[0060] In this embodiment, the optical diaphragm assembly 22 can be molded as a whole, so that the optical diaphragm assembly 22 is formed as shown in the figure. Figure 3 and Figure 4 The optical film assembly 22, which is shown to be convex with an upward protrusion in the middle and downward extension at the edges, covers the backlight 21 and places the backlight 21 in a recessed cavity on the lower side of the optical film assembly 22. When the optical film assembly 22 is configured as the convex structure described above, it can form a distinct forward light guide 22a and a side light guide 22b. The forward light guide 22a faces the array substrate 1, and the side light guide 22b faces the light guide module 4. The forward light guide 22a can project a portion of the backlight emitted by the backlight 21 onto the light incident area 122, thereby ensuring the illumination intensity of the central area of ​​the array substrate 1. The side light guide 22b can project another portion of the backlight emitted by the backlight 21 laterally onto the light guide module 4, thereby ensuring that this portion of the backlight can efficiently escape from the side and accurately enter the light guide module 4, and then be accurately projected onto the wiring area 121 by the guiding effect of the light guide module 4, thereby ensuring the illumination intensity of the outer area of ​​the array substrate 1.

[0061] Based on the above solution, the side light guiding section 22b of the optical film assembly 22 can be used to improve the side light guiding efficiency, so that a portion of the backlight emitted by the backlight 21 can be efficiently and accurately projected to the light guide module 4 along the side through the side light guiding section 22b. This optimizes the distribution of backlight, reduces the loss and waste of backlight, and further enhances the illumination compensation effect on the wiring area 121, thereby further improving the brightness uniformity and consistency of the entire display area.

[0062] Preferably, such as Figure 3 and Figure 4 As shown, a first reflector 23 is also provided below the backlight 21. The first reflector 23 can reflect the stray light scattered downwards to the optical film assembly 22, thereby reducing the loss of backlight light, improving the utilization rate of backlight light and the optical efficiency of the entire system, and thus indirectly enhancing the illumination compensation effect on the wiring area 121.

[0063] In one embodiment, refer to Figure 2 and Figure 3 The light guide module 4 includes an optical film structure 41 and a light guide structure 42;

[0064] An optical film structure 41 is disposed between the array substrate 1 and the GOA driving unit 3, and the optical film structure 41 surrounds the backlight module 2; a light guide structure 42 is disposed on the side of the optical film structure 41 facing away from the array substrate 1, and the light guide structure 42 surrounds the backlight module 2.

[0065] The light guide structure 42 is used to guide the backlight light emitted by the backlight module 2 to the optical film structure 41, so as to diffuse the backlight light to the wiring area 121 through the optical film structure 41.

[0066] In this embodiment, an optical diaphragm structure 41 is disposed in the wiring area 121, and the optical diaphragm structure 41 surrounds the backlight module 2 to form a closed-loop structure. The GOA driving unit 3 is located on the periphery of the optical diaphragm structure 41, and the light guide structure 42 is located on the inner periphery of the optical diaphragm structure 41. The inner periphery of the light guide structure 42 is disposed towards the lateral light-emitting portion of the backlight module 2; specifically, as shown... Figure 3 As shown, when the backlight module 2 includes a backlight 21 and an optical film assembly 22, the inner periphery of the light guide structure 42 is disposed toward the lateral light guide portion 22b of the optical film assembly 22.

[0067] The light guide structure 42 can refract and scatter the backlight light through corresponding optical devices, so that the backlight light emitted by the backlight module 2 can be accurately projected to the position of the optical film structure 41 under the guidance of the light guide structure 42 after being emitted laterally. The optical film structure 41 can homogenize this part of the backlight light to ensure the uniform distribution of the diffused backlight light in the display area, thereby ensuring the uniformity of light output in the outer area of ​​the array substrate 1.

[0068] Furthermore, such as Figure 2 As shown, the light guide structure 42 includes a second light guide plate 421 and a second reflective sheet 422. The outer periphery of the second light guide plate 421 is adjacent to the GOA driving unit 3, and the inner periphery of the second light guide plate 421 is adjacent to the backlight module 2. The upper side of the second light guide plate 421 is attached to the optical film structure 41, and the lower side of the second light guide plate 421 is set as an inclined structure that gradually rises from the inside to the outside. The second reflective sheet 422 is attached to the lower side of the second light guide plate 421. When a portion of the backlight light emitted by the backlight module 2 is emitted laterally and reaches the second light guide plate 421, this portion of the backlight light can be precisely projected onto the position of the optical film structure 41 under the refraction effect of the tilted structure of the second light guide plate 421. The second reflector 422 can reflect the stray light scattered downward in the second light guide plate 421 upward, so that this portion of the stray light returns to the second light guide plate 421 and is re-projected onto the optical film structure 41, thereby reducing the loss of backlight light and improving the utilization rate of backlight light.

[0069] Furthermore, such as Figure 2As shown, the optical film structure 41 includes a second lower diffuser 411, a second prism sheet 412, and a second upper diffuser 413 stacked sequentially. The main function of the second lower diffuser 411 is to initially diffuse the light projected onto the optical film structure 41 by the light guide structure 42, reducing light concentration and uneven distribution, and allowing the light to enter subsequent optical film layers more evenly. The second prism sheet 412 can adjust the direction of the light through its optical structure (such as a microprism array), enabling the light to be transmitted to the display area more effectively, improving light utilization and transmission efficiency. The second upper diffuser 413 can further diffuse the light adjusted by the second prism sheet 412, ensuring uniform light distribution in the display area, reducing light scattering and unevenness, and ultimately improving the uniformity of brightness throughout the display area.

[0070] In one embodiment, refer to Figure 2 and Figure 3 The display module also includes a self-emissive module 5, which is disposed between the array substrate 1 and the GOA driving unit 3. The self-emissive module 5 is used to compensate for the light intensity of the wiring area 121 through self-emissive compensation.

[0071] In this embodiment, the self-emissive module 5 can be equipped with an additional light source device, or a self-emissive light source can be integrated in the wiring area 121 using the electrical transmission characteristics of the GOA driving unit 3, so that the light emitted by the self-emissive module 5 can provide additional compensation for the illumination intensity of the wiring area 121.

[0072] Based on the above settings, while a portion of the backlight light emitted by the backlight module 2 is precisely guided into the wiring area 121 along the adjusted propagation path, an additional self-emissive module 5 is also established in the wiring area 121. This allows for the synergistic complementarity of backlight light and self-emissive light in the wiring area 121, overcoming the limitations of relying solely on side-emitting backlight light for supplementary lighting. This further enhances the illumination intensity of the wiring area 121, better solves the problem of insufficient brightness in the wiring area 121 caused by the obstruction of the GOA driving unit 3, ensures the uniformity and consistency of the overall brightness of the display area, and further improves the display effect while achieving narrow bezel and bezel-less designs.

[0073] In one embodiment, refer to Figure 2 and Figure 3 The self-emissive module 5 is configured as a self-emissive functional layer 51, which includes an electronic functional layer 511, an organic light-emitting layer 512 and a hole functional layer 513 stacked sequentially from bottom to top.

[0074] The display module also includes a conductive layer 6, which is disposed between the array substrate 1 and the hole functional layer 513. The conductive layer 6 serves as the anode of the self-emissive functional layer 51. The GOA driving unit 3 includes multiple metal traces, which serve as the cathode of the self-emissive functional layer 51.

[0075] Metal traces, electronic functional layer 511, organic light-emitting layer 512, hole functional layer 513 and conductive layer 6 together constitute the OLED light-emitting unit.

[0076] In this embodiment, the metal traces of the slit pattern structure inherent in the GOA driving unit 3 are used as the cathode of the organic light-emitting diode (OLED). On this basis, an electronic functional layer 511, an organic light-emitting layer 512, and a hole functional layer 513 are sequentially deposited on the metal traces of the slit pattern structure. A conductive layer 6 is disposed on the hole functional layer 513, and the conductive layer 6 is used as the anode of the organic light-emitting diode (OLED).

[0077] The main function of the electron functional layer 511 is to inject electrons when an electric field is applied, providing the necessary electron carriers for the self-luminescence process. The main function of the hole functional layer 513 is to inject holes when an electric field is applied, providing the necessary hole carriers for the self-luminescence process. When electrons and holes recombine in the organic light-emitting layer 512, they can emit light efficiently, thereby achieving the self-luminescence function.

[0078] Based on the above configuration, when an appropriate external voltage is applied to the two poles of the OLED light-emitting unit through the driving chip of the display device, electrons can be generated in the electronic functional layer 511 and injected into the organic light-emitting layer 512, while holes can be generated in the hole functional layer 513 and injected into the organic light-emitting layer 512. When electrons and holes recombine in the organic light-emitting layer 512, they can release energy and emit light in the form of light, thus realizing the self-emissive function. In this way, the illumination intensity of the wiring area 121 can be compensated by the self-emissive light.

[0079] In the aforementioned electroluminescence process, the voltage applied by the driving chip can be output to the anode and cathode of the OLED light-emitting unit through external electrical connection devices or electrical connection structures, or through the internal conductive channels penetrating the electronic functional layer 511, organic light-emitting layer 512, hole functional layer 513, and conductive layer 6. Similarly, the transmission of electrons and holes between the electronic functional layer 511, organic light-emitting layer 512, and hole functional layer 513 can be achieved through external electrical connection devices or electrical connection structures, or through the internal conductive channels penetrating the electronic functional layer 511, organic light-emitting layer 512, hole functional layer 513, and conductive layer 6. In practical applications, the voltage can be flexibly set according to the overall structural layout of the display module, and no limitation is made here.

[0080] In this embodiment, the OLED light-emitting unit is directly integrated on the GOA driving unit 3, without the need for additional light source components. This reduces the space occupied and the generation of additional power consumption, thereby maintaining the thinness and low power consumption of the display module while achieving self-illumination.

[0081] In one embodiment, refer to Figure 2 and Figure 3 The electronic functional layer 511 is made of lithium fluoride (LiF). Lithium fluoride has a low work function, which can effectively inject electrons and improve electron transport efficiency, thereby enabling high-efficiency light emission of OLED light-emitting units. In addition, lithium fluoride has good chemical stability and can maintain stable performance under the action of an electric field for a long time, thus extending the service life of the display module.

[0082] In one embodiment, refer to Figure 2 and Figure 3 The organic light-emitting layer 512 is made of phenanthrimidazole-anthracene-pyrene (PiAnPy) material. Phenanthrimidazole-anthracene-pyrene has excellent luminous efficiency and spectral characteristics, enabling it to emit bright light at lower driving voltages, thereby reducing energy consumption and improving display quality. Simultaneously, phenanthrimidazole-anthracene-pyrene exhibits good thermal and chemical stability, maintaining stable luminous performance under high temperature and long-term operating conditions.

[0083] In one embodiment, refer to Figure 2 and Figure 3 The hole functional layer 513 is made of polyfluorene derivative (TFB) material. Polyfluorene derivative has a high hole mobility, which can effectively inject and transport holes, forming an effective charge balance with the electrons in the electronic functional layer 511, thereby improving the luminous efficiency. In addition, polyfluorene derivative has good film-forming properties and can form a uniform film, which helps to improve the uniformity and consistency of the device.

[0084] In one embodiment, refer to Figure 2 and Figure 3 The conductive layer 6 is made of indium tin oxide (ITO). Indium tin oxide is a transparent conductive material 8 with good electrical conductivity and optical transmittance. During the self-luminescence process, indium tin oxide can effectively inject holes as an anode, and its transparency does not block the transmission of light; at the same time, indium tin oxide has good chemical stability and can maintain stable electrical properties under various environmental conditions.

[0085] In one embodiment, refer to Figure 2 and Figure 3The self-emissive functional layer 51 is configured as a plurality of spaced first strip structures, which are spaced and embedded in the optical film structure 41. The first strip structures and the metal traces at least partially overlap in the orthogonal projection area of ​​the array substrate 1.

[0086] In this embodiment, as Figure 2 As shown, the self-emissive functional layer 51 is divided into multiple first strip structures, which are arranged horizontally from the inside to the outside between the array substrate 1 and the GOA driving unit 3; the optical film structure 41 can be divided into multiple second strip structures, which are interposed in the space between two adjacent first strip structures.

[0087] When the above-mentioned strip splicing scheme is adopted between the self-emissive functional layer 51 and the optical film structure 41, it can be ensured that the self-emissive functional layer 51 and the optical film structure 41 can be evenly distributed in the area between the array substrate 1 and the GOA driving unit 3. This can ensure that the backlight and self-emissive light of the wiring area 121 can be evenly mixed and complement each other, thereby further improving the lighting effect of the wiring area 121.

[0088] Furthermore, the first strip structure and the metal traces at least partially overlap in the orthographic projection area of ​​the array substrate 1, thus ensuring the stability of the electrical connection between the self-emissive functional layer 51 and the metal traces.

[0089] In one embodiment, refer to Figure 2 and Figure 3 The self-emissive module 5 is provided with a through-hole 7. The two ends of the through-hole 7 are connected to the in-plane signal line of the array substrate 1 and the GOA driving unit 3, respectively. The through-hole 7 is filled with conductive material 8, and the in-plane signal line is electrically connected to the GOA driving unit 3 through the conductive material 8.

[0090] Specifically, such as Figure 2 As shown, when the self-emissive functional layer 51 includes an electronic functional layer 511, an organic light-emitting layer 512, and a hole functional layer 513, and a conductive layer 6 is disposed between the array substrate 1 and the hole functional layer 513, the interconnect via 7 can penetrate the electronic functional layer 511, the organic light-emitting layer 512, the hole functional layer 513, and the conductive layer 6. The upper end of the interconnect via 7 is connected to the in-plane signal line of the array substrate 1, and the lower end of the interconnect via 7 is connected to the GOA driving unit 3. Thus, after filling the interconnect via 7 with conductive material 8, the in-plane signal line of the array substrate 1 and the GOA driving unit 3 can both contact the conductive material 8, thereby achieving electrical conduction between the in-plane signal line of the array substrate 1 and the GOA driving unit 3 through the conductive material 8.

[0091] Based on the above configuration, the driving chip of the array substrate 1 can directly control the GOA driving unit 3 through the internal conductive channel formed by the conductive material 8; during the self-emissive control process, the voltage applied by the driving chip can be output to the anode and cathode of the OLED light-emitting unit through the internal conductive channel. In addition, the conductive material 8 can also serve as an internal transport channel for the transmission of electrons and holes between the electron functional layer 511, the organic light-emitting layer 512, and the hole functional layer 513, that is, it provides a carrier injection channel for the anode and cathode of the OLED light-emitting unit.

[0092] This embodiment establishes a short-distance, low-impedance electrical path between the in-plane signal lines of the array substrate 1 and the GOA driving unit 3 by means of film layer opening, realizing three-dimensional interconnection between the GOA driving unit 3 and the pixel area 11 on the front side of the array substrate 1. It eliminates the need to use a bent flexible circuit board (FPC) or to complete the electrical connection by etching the circuit on the side, thereby reducing the occupation of the side space. The vertical connection shortens the transmission distance, reduces the impedance of the signal transmission path, reduces the signal delay of the GOA driving unit 3, and eliminates the risks of the side etching process.

[0093] In one embodiment, refer to Figure 2 and Figure 3 The conductive material 8 is set as nano-silver.

[0094] Specifically, highly conductive silver nanoparticles (conductivity > 6 × 10⁻⁶) can be used. 7 The S / m) is injected into the interconnect via 7 to form nano-silver conductive material 8. In this way, the high conductivity of nano-silver can be used to significantly reduce the impedance of the signal transmission path and reduce the signal delay of the GOA driving unit 3, thereby further improving the efficiency and stability of signal transmission.

[0095] In one embodiment, refer to Figures 1 to 3 The display module also includes a heat dissipation bracket 9, which is connected to the GOA drive unit 3 and the conductive material 8. The heat dissipation bracket 9 is provided with a liquid cooling channel.

[0096] To effectively manage the heat generated in the area where the GOA drive unit 3 is located, ensuring stable operating efficiency under high load or high temperature conditions and avoiding performance degradation, this embodiment provides a high-efficiency thermal management system. Specifically, a heat sink 9 can be integrated into the bottom of the GOA drive unit 3. The heat sink 9 can be made of copper alloy, and a 200μm wide micro liquid cooling channel can be set inside the heat sink 9. This ensures that the heat sink 9 can directly contact the key heat source in the area where the GOA drive unit 3 is located, thereby achieving efficient heat conduction.

[0097] The heat sink 9 is positioned directly opposite the interconnect via 7 and contacts the lower end of the conductive material 8, thus working together to form an efficient thermal management path. First, the heat sink 9 has excellent thermal conductivity, providing a large area for heat conduction, enabling rapid heat transfer from the area containing the GOA driving unit 3 to the outside. Second, when the conductive material 8 uses nano-silver, its high thermal conductivity further accelerates the vertical heat dissipation, ensuring that heat from the area containing the GOA driving unit 3 can be quickly conducted to the heat sink 9 through the nano-silver in the interconnect via 7. Finally, this heat dissipation architecture significantly reduces the overall thermal resistance from the area containing the GOA driving unit 3 to the external environment, thereby ensuring that the OLED light-emitting unit integrated in the area containing the GOA driving unit 3 maintains stable luminous efficiency under high load or high temperature conditions, avoiding performance degradation due to overheating.

[0098] Based on the above settings, the display module can not only maintain good performance under normal working conditions, but also operate stably under high load or high temperature environments, thereby improving the operational reliability of the display module and extending its service life.

[0099] This application also provides a display device; please refer to [link / reference]. Figures 1 to 4 The display device includes the display module in any of the above embodiments.

[0100] In this embodiment, the display device may include terminal devices with display functions such as televisions, mobile phones, and tablet computers.

[0101] For the specific structure of the display module, please refer to the description of the above embodiments. Since the display device in this embodiment adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments. That is, the GOA driving unit 3 is set in the wiring area 121 on the back of the array substrate 1 to reduce the occupation of the side area of ​​the array substrate 1, further reduce the bezel width of the display device, and expand the display area without changing the overall size of the display device; and a light guide module 4 is set between the array substrate 1 and the GOA driving unit 3 to adjust the light path and accurately guide the backlight light projected by the backlight module 2 along the side along the adjusted propagation path into the wiring area 121, thereby significantly improving the illumination intensity of the wiring area 121, solving the problem of insufficient brightness of the wiring area 121 caused by the obstruction of the GOA driving unit 3, forming a supplementary light effect on the edge position of the display area, ensuring the uniformity and consistency of the overall brightness of the display area, and improving the display effect while realizing the narrow bezel and bezel-less design.

[0102] The above description is merely an exemplary embodiment of this application and does not limit the patent scope of this application. Any equivalent structural transformations made based on the technical concept of this application and the contents of the specification and drawings of this application, or direct / indirect applications in other related technical fields, are included within the patent protection scope of this application.

Claims

1. A display module, characterized in that, The display module includes: An array substrate, the array substrate including a light incident surface disposed toward a backlight module, the periphery of the light incident surface being a wiring area, and the inner periphery of the light incident surface being a light incident area; GOA drive unit, wherein the GOA drive unit is disposed in the wiring area; A light guide module is disposed between the array substrate and the GOA driving unit; the light guide module is used to guide the backlight light emitted by the backlight module to the wiring area; The self-emissive module is disposed between the array substrate and the GOA driving unit. The self-emissive module is used to compensate for the light intensity of the wiring area through self-emission. The self-emissive module is configured as a self-emissive functional layer, which includes an electronic functional layer, an organic light-emitting layer and a hole functional layer stacked sequentially from bottom to top. A conductive layer is disposed between the array substrate and the hole functional layer, and the conductive layer serves as the anode of the self-emissive functional layer; the GOA driving unit includes multiple metal traces, and the metal traces serve as the cathode of the self-emissive functional layer. The metal traces, the electronic functional layer, the organic light-emitting layer, the hole functional layer, and the conductive layer together constitute an OLED light-emitting unit.

2. The display module according to claim 1, characterized in that, The backlight module includes a backlight source and an optical film assembly, the optical film assembly covering the backlight source; the optical film assembly has a forward light guide and a side light guide, the forward light guide is used to project a portion of the backlight light emitted by the backlight source vertically to the light incident area, and the side light guide is used to project a portion of the backlight light emitted by the backlight source laterally to the light guide module.

3. The display module according to claim 1, characterized in that, The light guide module includes an optical film structure and a light guide structure; The optical film structure is disposed between the array substrate and the GOA driving unit, and the optical film structure surrounds the backlight module; the light guide structure is disposed on the side of the optical film structure facing away from the array substrate, and the light guide structure surrounds the backlight module. The light guide structure is used to guide the backlight light emitted by the backlight module to the optical film structure, so as to diffuse the backlight light to the wiring area through the optical film structure.

4. The display module according to claim 3, characterized in that, The self-emissive functional layer is configured as a plurality of spaced first strip structures, which are embedded in the optical film structure at intervals. The first strip structures and the metal traces at least partially overlap in the orthographic projection area of ​​the array substrate.

5. The display module according to claim 1 or 4, characterized in that, The self-emissive module has a through-hole, and the two ends of the through-hole are connected to the in-plane signal line of the array substrate and the GOA driving unit, respectively. The through-hole is filled with a conductive material, and the in-plane signal line is electrically connected to the GOA driving unit through the conductive material.

6. The display module according to claim 5, characterized in that, The conductive material is nano-silver.

7. The display module according to claim 5, characterized in that, The display module also includes a heat dissipation bracket, which is connected to the GOA driving unit and the conductive material, and has a liquid cooling channel inside.

8. A display device, characterized in that, The display device includes a display module as described in any one of claims 1 to 7.

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