Backlight module, display panel and display device

Abstract

The utility model provides a backlight module, a display panel and a display device, and relates to the technical field of display. The backlight module comprises a light guide plate and a plurality of backlight sources, the light guide plate comprises a light guide plate body and a protruding part, and the protruding part is located on the light outlet face of the light guide plate body and close to the light inlet face of the light guide plate body; the backlight sources are arranged opposite to the light inlet face of the light guide plate body and are arranged in the width direction of the light guide plate body. According to the display panel, the multiple backlight sources are arranged in the width direction, the interval exists between every two adjacent backlight sources in the multiple backlight sources in the width direction, the interval between every two adjacent backlight sources, adjacent to the protruding part, in the multiple intervals is the first interval, the first interval is larger than the other intervals in the multiple intervals, and the display effect of the display panel can be improved.

Description

Technical Field

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

[0002] With the rapid development of display technology, liquid crystal display (LCD) technology has permeated people's daily lives, such as in-vehicle displays, which have gradually become commonplace.

[0003] However, as in-vehicle displays play an increasingly important role in modern vehicle use, traditional in-vehicle displays can no longer meet the requirements of vehicle manufacturers and consumers, thus demanding higher and higher display quality from in-vehicle displays.

[0004] It should be noted that the information disclosed in the background section above is only used to enhance the understanding of the background of this disclosure, and therefore may include information that does not constitute prior art known to those skilled in the art. Utility Model Content

[0005] The purpose of this disclosure is to provide a backlight module, a display panel, and a display device that can improve display performance.

[0006] According to one aspect of this disclosure, a backlight module is provided, the backlight module comprising:

[0007] A light guide plate, the light guide plate including a light guide plate body and a protrusion, the protrusion being located on the light emitting surface of the light guide plate body and close to the light receiving surface of the light guide plate body;

[0008] Multiple backlights are provided, which are arranged opposite to the light-incoming surface of the light guide plate body and along the width direction of the light guide plate body. Two adjacent backlights are spaced apart in the width direction. The first spacing is the spacing between two backlights adjacent to the protrusion, and the first spacing is greater than the other spacings among the multiple spacings.

[0009] In an exemplary embodiment of this disclosure, in a direction perpendicular to the light-incoming surface of the light guide plate body, the orthographic projection of the backlight and the orthographic projection of the protrusion do not overlap.

[0010] In an exemplary embodiment of this disclosure, in the width direction, the distance between the protrusion and the adjacent backlight is L; in the direction perpendicular to the light-incident surface of the light guide plate body, the distance between the protrusion and the adjacent backlight is H; the light-emitting direction of the backlight is perpendicular to the light-incident surface, and the light-emitting angle of the backlight is θ; wherein,

[0011] In one exemplary embodiment of this disclosure, the width of the protrusion is D in the width direction, the first spacing is P, and P≥D+2L.

[0012] In one exemplary embodiment of this disclosure, the first spacing is 4mm to 10mm.

[0013] In an exemplary embodiment of this disclosure, the plurality of backlights include a first backlight, a second backlight, a third backlight, a fourth backlight, a fifth backlight, and a sixth backlight. In the width direction, the first backlight and the second backlight are disposed adjacent to the protrusion, the third backlight is located between the first backlight and the fifth backlight, and the fourth backlight is located between the second backlight and the sixth backlight.

[0014] The distance between the first backlight and the second backlight is the first distance; the distance between the first backlight and the third backlight is the second distance; the distance between the second backlight and the fourth backlight is the third distance; the distance between the third backlight and the fifth backlight is the fourth distance; and the distance between the fourth backlight and the sixth backlight is the fifth distance. The first distance is greater than the fourth distance and the fifth distance, and both the fourth distance and the fifth distance are greater than the second distance and the third distance.

[0015] In one exemplary embodiment of this disclosure, the luminous intensity of the two backlights adjacent to the protrusion is greater than the luminous intensity of the remaining backlights among the plurality of backlights.

[0016] In one exemplary embodiment of this disclosure, a light-shielding layer is provided on the protrusion, and the light-shielding layer covers at least all surfaces of the protrusion except for the surface facing the light-incoming surface.

[0017] In one exemplary embodiment of this disclosure, the backlight module further includes:

[0018] A prism layer is located on the light-emitting surface side of the light guide plate, and a through hole is formed on the prism layer, with the protrusion located in the through hole; the light-shielding layer covers at least a portion of the surface of the light guide plate exposed from the through hole.

[0019] In one exemplary embodiment of this disclosure, the light-shielding layer is bonded to the protrusion.

[0020] According to another aspect of this disclosure, a display panel is provided that includes the backlight module described above.

[0021] According to another aspect of this disclosure, a display device is provided, which includes the display panel described above.

[0022] The backlight module disclosed herein has a relatively large spacing in the width direction between the two backlights adjacent to the protrusion among multiple backlights. That is, the distance between the protrusion and the two adjacent backlights is increased, which can improve the phenomenon that the protrusion is brightened when the backlight adjacent to the protrusion shines directly on it, thereby avoiding the occurrence of poor display image and improving the display effect.

[0023] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and are not intended to limit this disclosure. Attached Figure Description

[0024] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this disclosure and, together with the description, serve to explain the principles of this disclosure. It is obvious that the drawings described below are merely some embodiments of this disclosure, and those skilled in the art can obtain other drawings based on these drawings without any inventive effort.

[0025] Figure 1 This is a schematic diagram of a light source directly shining on a portion of the boss structure, as provided in this disclosure.

[0026] Figure 2 For this public disclosure Figure 1 A schematic diagram showing the protrusion shining brightly due to direct light shining on area A.

[0027] Figure 3 For this public disclosure Figure 1 A schematic diagram showing light rays in region B hitting the edge of the prism directly without diffusion.

[0028] Figure 4 This is a schematic diagram of a backlight module provided in one embodiment of the present disclosure.

[0029] Figure 5 An exploded view of a backlight module provided in one embodiment of this disclosure.

[0030] Figure 6 This is an exploded view of a partial structure of a backlight module provided in one embodiment of the present disclosure.

[0031] Figure 7 This is a schematic diagram of a light guide plate provided in one embodiment of the present disclosure.

[0032] Figure 8 This is a partial enlarged view of a light guide plate and a backlight source provided in one embodiment of the present disclosure.

[0033] Figure 9 This is a schematic diagram of the spacing between two backlights adjacent to the protrusion, provided for one embodiment of the present disclosure.

[0034] Figure 10 A comparison diagram showing the display effect of a screen provided in one embodiment of this disclosure.

[0035] Figure 11 This is a schematic diagram of the arrangement of multiple backlights provided in one embodiment of the present disclosure.

[0036] Figure 12 This is a partial enlarged view of a backlight module provided in one embodiment of the present disclosure.

[0037] Figure 13 This is a schematic diagram showing a light-shielding layer provided for a protrusion in one embodiment of the present disclosure.

[0038] Figure 14 This is a schematic diagram of a light-shielding layer provided in one embodiment of the present disclosure.

[0039] Figure 15 This is a schematic diagram of a light-shielding layer provided in one embodiment of the present disclosure from another perspective.

[0040] Figure 16 This is a schematic diagram illustrating how a light-shielding layer eliminates light leakage from a boss, according to one embodiment of this disclosure.

[0041] Figure 17 This is a schematic diagram of a light-shielding layer that blocks light rays incident on the edge of a prism, according to one embodiment of the present disclosure.

[0042] Figure 18 A comparison diagram showing the display effect of another embodiment of this disclosure.

[0043] Figure 19 A schematic diagram showing the unfolding of a light-shielding layer provided for another embodiment of this disclosure.

[0044] Explanation of reference numerals in the attached figures:

[0045] 10. Light guide plate; 110. Light guide plate body; 120. Protrusion; 20. Backlight; 21. Circuit board; 210. First backlight; 220. Second backlight; 230. Third backlight; 240. Fourth backlight; 250. Fifth backlight; 260. Sixth backlight; 31. Prism layer; 310. First positioning hole; 32. Diffuser; 320. Second positioning hole; 33. Brightness enhancement film; 330. Third positioning hole; 40. Back plate; 50. Light-shielding layer; 510. First light-shielding part; 511. First light-shielding area; 512. Second light-shielding area; 513. Third light-shielding area; 514. Fourth light-shielding area; 515. Fifth light-shielding area; 516. Sixth light-shielding area; 520. Second light-shielding part; 60. Display panel. Detailed Implementation

[0046] Exemplary embodiments will now be described more fully with reference to the accompanying drawings. However, these exemplary embodiments can be implemented in many forms and should not be construed as limited to the embodiments set forth herein; rather, they are provided so that this disclosure will be thorough and complete, and will fully convey the concept of the exemplary embodiments to those skilled in the art. The same reference numerals in the drawings denote the same or similar structures, and therefore their detailed description will be omitted.

[0047] Although relative terms such as "up" and "down" are used in this specification to describe the relative relationship of one component of an icon to another, these terms are used only for convenience, such as according to the orientation of the examples shown in the accompanying drawings. It is understood that if the device of the icon is flipped upside down, the component described as "up" will become the component described as "down." When a structure is "up" of another structure, it may mean that the structure is integrally formed on the other structure, or that the structure is "directly" mounted on the other structure, or that the structure is "indirectly" mounted on the other structure through another structure.

[0048] The terms “a,” “one,” “the,” “the,” and “at least one” are used to indicate the presence of one or more elements / components / etc.; the terms “including” and “having” are used to indicate an open-ended inclusion and to mean that there may be other elements / components / etc. in addition to the listed elements / components / etc.; the terms “first,” “second,” and “third,” etc., are used only as markers and are not a limitation on the number of objects.

[0049] like Figure 1 As shown, in order to fix other functional films located on the light guide plate 10', large-size automotive display modules have positioning bosses 120' on the surface of the light guide plate 10'. The larger the product, the larger the size of the positioning bosses 120', to meet customer reliability requirements. However, increasing the size of the positioning bosses 120' can lead to poor display quality. For example... Figure 1 and Figure 2 As shown, because LEDs emit light at a certain angle, the light source 20′ will directly shine on part of the positioning protrusion 120′, causing the positioning protrusion 120′ to light up, which in turn leads to a poor display image; at the same time, as Figure 1 and Figure 3 As shown, the light from the light source 20' directly hits the edge of the prism 31' without passing through the diffuser, causing the light to enter the viewing window area directly along the edge of the prism 31', resulting in a poor display image.

[0050] To address the aforementioned technical problems, embodiments of this disclosure provide a backlight module, such as... Figures 4-8 As shown, the backlight module includes a light guide plate 10 and multiple backlight sources 20. The light guide plate 10 includes a light guide plate body 110 and a protrusion 120. The protrusion 120 is located on the light-emitting surface of the light guide plate body 110 and close to the light-incoming surface of the light guide plate body 110. The multiple backlight sources 20 are arranged opposite to the light-incoming surface of the light guide plate body 110 and are arranged along the width direction Y of the light guide plate body 110. Two adjacent backlight sources 20 have a spacing in the width direction Y. Among the multiple spacings, the spacing between two backlight sources 20 adjacent to the protrusion 120 is the first spacing, and the first spacing is greater than the other spacings among the multiple spacings.

[0051] In the backlight module provided in this disclosure, the spacing between the two backlights 20 adjacent to the protrusion 120 in the width direction Y is relatively large. That is, the distance between the protrusion 120 and the two adjacent backlights 20 is increased, which can improve the phenomenon that the protrusion 120 is illuminated by the backlights 20 adjacent to the protrusion 120, thereby avoiding the occurrence of poor display and improving the display effect.

[0052] like Figure 4 and Figure 5 As shown, the backlight module also includes a back plate 40, which has a frame portion surrounding the light guide plate 10. The backlight source 20 is disposed on the circuit board 21, which is connected to the frame portion of the back plate 40 to fix the backlight source 20 so that the backlight source 20 is positioned opposite to the light-incoming surface of the light guide plate 10.

[0053] The backlight 20 can be an LED lamp core, which can be directly connected to the circuit board 21 and the light emission can be controlled by the circuit board 21.

[0054] like Figure 4 and Figure 5 As shown, the backlight module also includes a diffuser 32, a prism layer 31, and a brightness enhancement film (DBEF) 33.

[0055] The diffuser 32 is disposed on the light-emitting surface of the light guide plate 10 along the light-emitting direction Z of the light guide plate 10. The substrate of the diffuser 32 contains inorganic or organic light-scattering particles, or through the microstructure design of the substrate surface, the incident light is refracted, reflected and scattered in multiple directions, which changes the light propagation path of the LED point light source or CCFL line light source, ensuring that the incident light can be fully diffused, so as to soften the point light source into a surface light source.

[0056] The prism layer 31 is disposed on the side of the diffuser 32 facing away from the light guide plate 10. The prism layer 31 can focus the diverging light emitted by the diffuser 32 into a smaller angular range, thereby improving the brightness of the frontal viewing angle. When light encounters the microstructure of the prism layer 31, internal total internal reflection, frontal refraction, and refraction and reflection of a small portion of the light entering adjacent prisms will occur, thus enabling the light to be effectively focused and emitted within a smaller angular range, thereby improving the brightness of the front.

[0057] The brightness enhancement film 33 is disposed on the side of the prism layer 31 away from the diffuser 32. The brightness enhancement film 33 can improve the utilization rate of the backlight 20 and enhance the overall display effect by increasing the transmittance.

[0058] like Figure 6 As shown, the prism layer 31 has multiple first positioning holes 310, the diffuser 32 has multiple second positioning holes 320, the brightness enhancement film 33 has multiple third positioning holes 330, and the light-emitting surface of the light guide plate body 110 has multiple protrusions 120. The number of protrusions 120 matches the number of first positioning holes 310, second positioning holes 320, and third positioning holes 330. When the diffuser 32, prism layer 31, and brightness enhancement film 33 are assembled onto the light guide plate 10, the positions of the multiple first positioning holes 310, multiple second positioning holes 320, and multiple third positioning holes 330 are aligned one-to-one, forming connected positioning holes. The multiple protrusions 120 are located one-to-one in the formed connected positioning holes, thereby achieving the positioning and assembly of the diffuser 32, prism layer 31, and brightness enhancement film 33 to meet the requirements of the large-size design of the display panel 60.

[0059] In one embodiment, such as Figures 7-9 As shown, in the X direction perpendicular to the light-incoming surface of the light guide plate body 110, the orthographic projection of the backlight 20 and the orthographic projection of the protrusion 120 have no overlap, that is, the backlight 20 and the protrusion 120 are completely misaligned, thereby preventing the backlight 20 from directly shining on the protrusion 120 and causing the protrusion 120 to light up; as Figure 10 As shown, the brightness of the improved D area is lower than that of the unimproved C area, which improves the poor display and enhances the display effect.

[0060] When the backplate 40 has multiple protrusions 120 on its light body, the orthographic projection of each protrusion 120 does not overlap with the orthographic projection of the adjacent backlight 20. That is, each protrusion 120 is completely misaligned with the adjacent backlight 20, thereby completely preventing the protrusion 120 from shining directly on the backlight 20 and causing it to light up. Of course, some protrusions 120 may also be completely misaligned with the adjacent backlight 20, and this disclosure does not limit this.

[0061] like Figure 9 As shown, in the width direction Y, the distance between the edge of the protrusion 120 and the edge of the adjacent backlight 20 is L; in the X direction perpendicular to the light-incident surface of the light guide plate body 110, the distance between the edge of the protrusion 120 and the edge of the adjacent backlight 20 is H; the light emission direction of the backlight 20 is perpendicular to the light-incident surface, and the light emission angle of the backlight 20 is θ; wherein, In other words, by making the distance between the protrusion 120 and the adjacent backlight 20 greater than This avoids the phenomenon where the backlight 20 shines directly on the protrusion 120, causing the protrusion 120 to light up.

[0062] Furthermore, in the width direction Y, the width of the protrusion 120 is D, and the first spacing is P, where P ≥ D + 2L. That is, by making the distance between the two backlights 20 adjacent to the protrusion 120, i.e., the first spacing, greater than D + 2L, the phenomenon that the two backlights 20 adjacent to the protrusion 120 directly shine on the protrusion 120, causing the protrusion 120 to light up, can be avoided.

[0063] In one embodiment, the first spacing is 4mm to 10mm. For example, D is 5mm, H is 0.55mm, and the light emission angle θ of the backlight 20 is 120°. L = 0.55 × tan60° = 0.952, meaning the increased first spacing P = D + 2L = 5 + 2 × 0.952 = 6.904 mm. The first spacing can also be 4 mm, 4.5 mm, 5 mm, 5.5 mm, 6 mm, 6.5 mm, 7 mm, 7.5 mm, 8 mm, 8.5 mm, 9 mm, 9.5 mm, 10 mm, etc. It is understood that the first spacing can be determined based on the width D of the protrusion 120, the light emission angle of the backlight 20, and the distance H between the protrusion 120 and the adjacent backlight 20, and is not limited to the aforementioned 4 mm to 10 mm; for example, it can be less than 4 mm or greater than 10 mm. The width of the backlight 20 can be, for example, 3 mm.

[0064] When the back panel 40 has multiple protrusions 120 on its light body, the distance between two adjacent backlights 20 of each protrusion 120 can be determined using the above method. The distance between two adjacent backlights 20 of each protrusion 120 can be the same or different, which can avoid the phenomenon that two adjacent backlights 20 of the protrusion 120 directly shine on the protrusion 120, causing the protrusion 120 to light up, while ensuring the brightness of the backlight module.

[0065] It should be noted that the first spacing P mentioned above is the spacing between the light-emitting parts of two adjacent backlights 20. Since a backlight 20 may only include a light-emitting part or include a light-emitting part and a base supporting the light-emitting part, the distance between the bases of two adjacent backlights 20 may be smaller than the distance between the light-emitting parts. However, since the base does not cause the protrusion 120 to light up, when determining the spacing between two adjacent backlights 20, the spacing between the actual light-emitting parts is considered, that is, the distance between the adjacent edges of the two light-emitting parts in the width direction Y. The width of the light-emitting part itself in the width direction Y is not included, because the width of the light-emitting part itself does not directly affect whether the backlight 20 directly shines on the protrusion 120 and causes the protrusion 120 to light up. Rather, the spacing between the edge of the light-emitting part and the protrusion 120 directly affects whether the backlight 20 directly shines on the protrusion 120 and causes the protrusion 120 to light up.

[0066] In one embodiment, such as Figure 11 As shown, the plurality of backlights 20 include a first backlight 210, a second backlight 220, a third backlight 230, a fourth backlight 240, a fifth backlight 250, and a sixth backlight 260. In the width direction Y, the first backlight 210 and the second backlight 220 are arranged adjacent to the protrusion 120, the third backlight 230 is located between the first backlight 210 and the fifth backlight 250, and the fourth backlight 240 is located between the second backlight 220 and the sixth backlight 260. The distance between the first backlight 210 and the second backlight 220 is the first distance; the distance between the first backlight 210 and the third backlight 230 is the second distance; the distance between the second backlight 220 and the fourth backlight 240 is the third distance; the distance between the third backlight 230 and the fifth backlight 250 is the fourth distance; and the distance between the fourth backlight 240 and the sixth backlight 260 is the fifth distance. The first distance is greater than the fourth and fifth distances, the fourth distance is greater than the second and third distances, and the fifth distance is greater than both the second and third distances.

[0067] The first spacing between the first backlight 210 and the second backlight 220 is relatively large compared to other spacings, thus preventing the two backlights 20 adjacent to the protrusion 120 from directly shining on the protrusion 120 and causing it to light up. However, this also reduces the density of backlights 20 on the light guide plate 10 at the protrusion 120, resulting in lower luminous brightness at that location compared to other positions. In this case, by making the first spacing larger than the fourth and fifth spacings, and the fourth and fifth spacings both larger than the second and third spacings (i.e., the third backlight 230 is positioned closer to the first backlight 210, and the fourth backlight 240 is positioned closer to the second backlight 220), the third and fourth backlights 230 can compensate for the luminous brightness at the protrusion 120, thereby improving the uniformity of luminous brightness in the light guide plate 10.

[0068] The second and third spacings can be the same or different, as can the fourth and fifth spacings. The second spacing can be 80% to 95% of the size of the fourth and fifth spacings, the third spacing can be 80% to 95% of the size of the fourth and fifth spacings, the fourth spacing can be 80% to 95% of the size of the first spacing, and the fifth spacing can be 80% to 95% of the size of the first spacing. The value of 80% to 95% can be 80%, 85%, 90%, 95%, etc. Of course, other ratios can also be used, as long as they can compensate for the luminous brightness at the protrusion 120°. This disclosure does not impose any limitations on this.

[0069] In one embodiment, the luminous intensity of the two backlight sources 20 adjacent to the protrusion 120 is greater than the luminous intensity of the remaining backlight sources 20 among the plurality of backlight sources 20. The first spacing between the first backlight source 210 and the second backlight source 220 is relatively large compared to other spacings, thereby avoiding the phenomenon that the two backlight sources 20 adjacent to the protrusion 120 directly illuminate the protrusion 120, causing the protrusion 120 to light up. However, this also reduces the density of backlight sources 20 on the light guide plate 10 at the protrusion 120, resulting in a relatively lower luminous intensity at that location compared to other locations. At this time, by making the luminous intensity of the two backlight sources 20 adjacent to the protrusion 120 greater than the luminous intensity of the remaining backlight sources 20 among the plurality of backlight sources 20, the luminous intensity at the protrusion 120 can be compensated, thereby improving the uniformity of luminous intensity in the light guide plate 10.

[0070] The luminance of the two backlights 20 adjacent to the protrusion 120 is 105% to 120% of the luminance of the other backlights, such as 105%, 110%, 115%, 120%, etc. Of course, other ratios can also be used, as long as they can compensate for the luminance at the protrusion 120. This disclosure does not limit this.

[0071] In one embodiment, such as Figures 12-15As shown, a light-shielding layer 50 is provided on the protrusion 120, and the light-shielding layer 50 covers at least all surfaces of the protrusion 120 except for the surface facing the light-incoming surface. Figure 16 As shown, by providing a light-shielding layer 50 on the protrusion 120, it is possible to prevent the protrusion 120 from shining and to prevent the light in the protrusion 120 from directly entering the prism layer 31.

[0072] The light-shielding layer 50 can be light-shielding tape, which is bonded to the protrusion 120 to facilitate the installation of the light-shielding layer 50 on the protrusion 120. Alternatively, the light-shielding layer 50 can be a coating layer, which is applied to the protrusion 120 through a coating process.

[0073] like Figure 12 and Figure 13 As shown, the light guide plate body 110 has a portion of its surface exposed on both sides of the protrusion 120 along the width direction Y from the first positioning hole 310, the second positioning hole 320, and the third positioning hole 330. The first light-shielding part 510 of the light-shielding layer 50 covers the protrusion 120, and the second light-shielding parts 520 located on both sides of the first light-shielding part 510 cover at least part of the exposed surface of the light guide plate body 110. Since the light from the backlight 20 may directly hit the edge of the prism layer 31 without the diffuser 32 from the exposed part of the surface, causing the light to directly enter the viewing window area along the edge of the prism, resulting in poor display image, the second light-shielding parts 520 cover at least part of the exposed surface of the light guide plate body 110, such as... Figure 17 As shown, this improves the situation where light leaks from the surface and directly hits the edge of the prism layer 31 without passing through the diffuser 32. For example... Figure 18 As shown, the brightness of the improved F area is lower than that of the unimproved E area, which improves the poor display and enhances the display effect.

[0074] It is understood that the second light-shielding part 520 of the light-shielding layer 50 can completely cover the exposed surface of the upper part of the light guide plate body 110, so as to completely prevent light from shining directly from the exposed surface to the edge of the prism layer 31 without passing through the diffuser 32.

[0075] like Figure 19As shown, the light-shielding layer 50, when unfolded, has a roughly rectangular shape, which facilitates cutting the light-shielding layer 50, improves the utilization rate of the light-shielding material, and reduces costs. The first light-shielding part 510 includes a first light-shielding area 511, a second light-shielding area 512, a third light-shielding area 513, a fourth light-shielding area 514, a fifth light-shielding area 515, and a sixth light-shielding area 516. The first light-shielding area 511 is bonded to the top surface of the protrusion 120; the second light-shielding area 512 is bonded to the sidewall of the protrusion 120 along the X-direction towards the middle region of the light guide plate body 110; the third light-shielding area 513 and the fourth light-shielding area 514 are bonded to the two sidewalls of the light guide plate body 110 along the width direction; and the fifth light-shielding area 515 and the sixth light-shielding area 516 are bonded to the two sidewalls of the light guide plate body 110 along the width direction. The light guide plate body 110 has double-layered light-shielding areas on its two sidewalls along the width direction, resulting in better light-shielding performance.

[0076] The embodiments of this disclosure also provide a display panel, which includes the backlight module provided in the above embodiments. The beneficial effects of this display panel are detailed in the description of the beneficial effects of the backlight module described above, and will not be repeated here. The display panel can be a liquid crystal display (LCD), such as a thin-film transistor (TFT) liquid crystal display, i.e., using TFTs to form the driving circuit in the liquid crystal display panel. The types of TFTs can include, for example, amorphous silicon (a-Si) TFTs, low-temperature polycrystalline silicon (LTPS) TFTs, low-temperature polycrystalline oxide (LTPO) TFTs, and indium gallium zinc oxide (IGZO) TFTs. Furthermore, according to the driving type, liquid crystal displays can include twisted nematic (TN), in-plane switching (IPS), and vertical alignment (VA) types. This application does not limit the specific type of liquid crystal display.

[0077] Specifically, the display panel also includes an array substrate, a liquid crystal layer, and a color filter substrate. The array includes transistors, a common electrode, and pixel electrodes. The pixel electrodes are connected to the source or drain of the transistors, and the liquid crystal cell is located between the color filter substrate and the pixel electrodes.

[0078] The array substrate houses a pixel driving circuit, which includes pixel electrodes and a common electrode. The color filter substrate contains multiple color filters, such as red, green, and blue-green filters. Black matrices are positioned between the different color filters to prevent crosstalk between different colors of light. A liquid crystal layer is disposed between the array substrate and the color filter substrate. The pixel driving circuit on the array substrate transmits data voltage signals to the pixel electrodes via data lines, and a common voltage signal to the common electrode via a common signal line. The liquid crystal molecules in the liquid crystal layer are deflected by the electric field between the pixel electrodes and the common electrode, allowing light emitted from the backlight module to pass through, thus achieving the display effect.

[0079] Embodiments of this disclosure also provide a display device including the aforementioned display panel. This display device may be an in-vehicle display, mobile phone, tablet computer, television, e-reader, or other terminal device with a display panel. Its beneficial effects are similar to those described for the display panel, and will not be elaborated further here.

[0080] Other embodiments of this disclosure will readily occur to those skilled in the art upon consideration of the specification and practice of the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of this disclosure that follow the general principles of this disclosure and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only, and the true scope and spirit of this disclosure are indicated by the appended claims.

Claims

1. A backlight module, characterized in that, include: A light guide plate, the light guide plate including a light guide plate body and a protrusion, the protrusion being located on the light emitting surface of the light guide plate body and close to the light receiving surface of the light guide plate body; Multiple backlights are provided, which are arranged opposite to the light-incoming surface of the light guide plate body and along the width direction of the light guide plate body. Two adjacent backlights are spaced apart in the width direction. The first spacing is the spacing between two backlights adjacent to the protrusion, and the first spacing is greater than the other spacings among the multiple spacings.

2. The backlight module according to claim 1, characterized in that, In the direction perpendicular to the light-incoming surface of the light guide plate body, the orthographic projection of the backlight and the orthographic projection of the protrusion do not overlap.

3. The backlight module according to claim 2, characterized in that, In the width direction, the distance between the protrusion and the adjacent backlight is L; in the direction perpendicular to the light-inlet surface of the light guide plate body, the distance between the protrusion and the adjacent backlight is H; the light emission direction of the backlight is perpendicular to the light-inlet surface, and the light emission angle of the backlight is θ; wherein, 4. The backlight module according to claim 3, characterized in that, In the width direction, the width of the protrusion is D, the first spacing is P, and P≥D+2L.

5. The backlight module according to claim 1, characterized in that, The first spacing is 4mm to 10mm.

6. The backlight module according to claim 1, characterized in that, The plurality of backlights includes a first backlight, a second backlight, a third backlight, a fourth backlight, a fifth backlight, and a sixth backlight. In the width direction, the first backlight and the second backlight are arranged adjacent to the protrusion. The third backlight is located between the first backlight and the fifth backlight, and the fourth backlight is located between the second backlight and the sixth backlight. The distance between the first backlight and the second backlight is the first distance; the distance between the first backlight and the third backlight is the second distance; the distance between the second backlight and the fourth backlight is the third distance; the distance between the third backlight and the fifth backlight is the fourth distance; and the distance between the fourth backlight and the sixth backlight is the fifth distance. The first distance is greater than the fourth distance and the fifth distance, and both the fourth distance and the fifth distance are greater than the second distance and the third distance.

7. The backlight module according to claim 1, characterized in that, The luminous intensity of the two backlights adjacent to the protrusion is greater than the luminous intensity of the remaining backlights among the plurality of backlights.

8. The backlight module according to claim 1, characterized in that, A light-shielding layer is provided on the protrusion, and the light-shielding layer covers at least all surfaces of the protrusion except for the surface facing the light-incoming surface.

9. The backlight module according to claim 8, characterized in that, The backlight module also includes: A prism layer is located on the light-emitting surface side of the light guide plate, and a through hole is formed on the prism layer, with the protrusion located in the through hole; the light-shielding layer covers at least a portion of the surface of the light guide plate exposed from the through hole.

10. The backlight module according to claim 8, characterized in that, The light-shielding layer is bonded to the protrusion.

11. A display panel, characterized in that, Includes the backlight module as described in any one of claims 1 to 10.

12. A display device, characterized in that, Includes the display panel as described in claim 11.

Images