Light-emitting modules, backlight modules, display modules, and electronic devices
By alternating the light-emitting elements in the light-emitting module and controlling the light angle using the light guide channel, the high cost problem caused by LCD modules is solved, achieving effective privacy protection and cost reduction.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- INTERFACE OPTOELECTRONICS (SHENZHEN) CO LTD
- Filing Date
- 2023-11-15
- Publication Date
- 2026-06-30
AI Technical Summary
Existing privacy protection methods that control the viewing angle through an LCD module result in high production costs.
By using alternating first and second light-emitting elements in a light-emitting module and controlling the light emission angle through a light guide channel, a privacy function can be achieved while reducing production costs.
While achieving privacy protection, production costs were reduced, and the privacy protection effect was improved through the combination of light guides and light emission modes.
Smart Images
Figure CN117518615B_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of display technology, and in particular to light-emitting modules, backlight modules, display modules, and electronic devices. Background Technology
[0002] For safe driving, a privacy mode is usually set on the vehicle's display module. When the vehicle is running, the display mode of the display module is switched to privacy mode to prevent the driver from seeing the content displayed on the display module.
[0003] In related technologies, a liquid crystal module is added to the display module, and the viewing angle is changed by controlling the orientation of the liquid crystal in the liquid crystal module. However, this control method results in high production costs. Summary of the Invention
[0004] Therefore, it is necessary to provide a light-emitting module, a backlight module, a display module, and an electronic device to reduce production costs while achieving privacy protection.
[0005] According to one aspect of this application, an embodiment of this application provides a light-emitting module, including:
[0006] The substrate has a first surface disposed along a first direction;
[0007] Multiple light-emitting elements are disposed on the first surface; the multiple light-emitting elements are arranged in multiple rows along a second direction and in multiple columns along a third direction; and
[0008] A light guide is disposed on the first surface; the light guide has multiple light guide channels, and the multiple light guide channels correspond one-to-one with the multiple light-emitting elements;
[0009] The plurality of light-emitting elements include a plurality of first light-emitting elements and a plurality of second light-emitting elements, wherein the first light-emitting elements and the second light-emitting elements are arranged alternately along the second direction and alternately along the third direction; among the plurality of light-guiding channels, the light-guiding channel corresponding to the first light-emitting element is the first light-guiding channel, and the light-guiding channel corresponding to the second light-emitting element is the second light-guiding channel;
[0010] The light emission angle of the light emitted by the first light-emitting element through the corresponding first light guide channel is greater than the light emission angle of the light emitted by the second light-emitting element through the corresponding second light guide channel;
[0011] The light-emitting module has a first light-emitting mode in which the first light-emitting element emits light, and a second light-emitting mode in which the second light-emitting element emits light;
[0012] The second direction and the third direction intersect each other and are both perpendicular to the first direction.
[0013] In one embodiment, the maximum size of the exit of the first light guide channel is greater than the maximum size of the exit of the second light guide channel.
[0014] In one embodiment, the ratio of the maximum size of the exit of the first light guide channel to the maximum size of the exit of the second light guide channel is greater than 3.
[0015] In one embodiment, the central axis of the first light guide channel coincides with the central axis of the light-emitting element corresponding to the first light guide channel; and / or
[0016] The central axis of the second light guide channel coincides with the central axis of the light-emitting element corresponding to the second light guide channel.
[0017] In one embodiment, the cross-sectional area of the second light guide channel remains unchanged along the first direction.
[0018] In one embodiment, the cross-sectional area of the first light guide channel increases along the first direction.
[0019] In one embodiment, along the first direction, the cross-sectional area of the first light guide channel is larger the closer it is to the exit of the first light guide channel.
[0020] In one embodiment, a plane passing through the central axis of the first light guide channel is defined as a reference plane;
[0021] The inner wall of the first light guide channel intersects the reference surface at a first intersection line and a second intersection line;
[0022] The first intersection line and the second intersection line have proximal ends that are close to each other and face the substrate, and distal ends that are far from each other and away from the substrate;
[0023] Wherein, the first intersection line and the second intersection line are straight lines; or
[0024] The first and second intersection lines are arcs.
[0025] In one embodiment, the dimension of the first light guide channel along the first direction is larger than the dimension of the corresponding light-emitting element along the first direction;
[0026] The dimension of the second light guide channel along the first direction is greater than the dimension of the corresponding light-emitting element along the first direction.
[0027] In one embodiment, the ratio of the dimension of the first light guide channel along the first direction to the dimension of the corresponding light-emitting element along the first direction is greater than 4; and / or
[0028] The ratio of the dimension of the second light guide channel along the first direction to the dimension of the corresponding light-emitting element along the first direction is greater than 4.
[0029] In one embodiment, the light guide is provided with a plurality of mounting holes, each mounting hole connecting to a light guide channel, the plurality of mounting holes corresponding one-to-one with the plurality of light-emitting elements, and the light-emitting elements extending into the light guide channel through the corresponding mounting holes; and / or
[0030] The light guide channel has a rounded transition portion on the side edge opposite to the substrate; and / or
[0031] The light guide is made of plastic or metal; and / or
[0032] The internal structure of the light guide is either solid or hollow.
[0033] In one embodiment, the reflectivity of the inner wall of the light guide channel is greater than 90%.
[0034] In one embodiment, each row of the light-emitting elements is arranged at equal intervals along the third direction; and / or
[0035] Each column of light-emitting elements is arranged at equal intervals along the second direction.
[0036] In one embodiment, under the first light-emitting mode, the brightness of each of the first light-emitting elements is the same or the brightness varies; and / or
[0037] In the second light-emitting mode, the brightness of each of the second light-emitting elements is the same or the brightness varies.
[0038] According to another aspect of this application, an embodiment of this application provides a backlight module, including a diffuser, a light-enhancing element, and a light-emitting module as described in any of the above embodiments; the diffuser and the light-enhancing element are sequentially stacked on the side of the light guide element opposite to the substrate.
[0039] According to another aspect of this application, an embodiment of this application provides a display module, including the backlight module described in any of the above embodiments.
[0040] According to another aspect of this application, embodiments of this application provide an electronic device including the display module described in any of the above embodiments.
[0041] In the aforementioned light-emitting module, backlight module, display module, and electronic device, the light-emitting module includes at least a substrate, multiple light-emitting elements, and a light guide. By providing light guide channels on the light guide that correspond one-to-one with the multiple light-emitting elements, light emitted by the light-emitting elements is emitted through the corresponding light guide channels. By configuring the light-emitting module to have a first light-emitting mode with a first light-emitting element emitting light and a second light-emitting mode with a second light-emitting element emitting light, the emission angle of the light emitted by the first light-emitting element through the corresponding first light guide channel is greater than the emission angle of the light emitted by the second light-emitting element through the corresponding second light guide channel. Therefore, the emission range in the first emission mode is greater than the emission range in the second emission mode. In other words, when the light-emitting module is in the first emission mode, personnel, including the driver, can view the corresponding display content; when the light-emitting module is in the second emission mode, personnel other than the driver can view the corresponding display content, thus achieving the required privacy protection function for the driver. Therefore, by using the light guide illustrated above and the first and second emission modes of the light-emitting module used in conjunction, privacy protection can be achieved while reducing production costs.
[0042] Additional aspects and advantages of embodiments of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of embodiments of this application. Attached Figure Description
[0043] Various other advantages and benefits will become apparent to those skilled in the art upon reading the detailed description of the preferred embodiments below. The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of this application. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings:
[0044] Figure 1 This is a schematic diagram of the structure of a display module in one embodiment of the related technology;
[0045] Figure 2 This is a schematic diagram of the display module structure in another embodiment of the related technology;
[0046] Figure 3 This is a schematic diagram of the structure of a liquid crystal module in its first state in related technologies;
[0047] Figure 4 This is a schematic diagram of the structure of a liquid crystal module in the second state in related technologies;
[0048] Figure 5 This is a partial cross-sectional view of the light-emitting module in one embodiment of this application;
[0049] Figure 6 for Figure 5A top view schematic diagram of the substrate and light-emitting element in the light-emitting module;
[0050] Figure 7 for Figure 5 A top view of the light-emitting module in the diagram;
[0051] Figure 8 for Figure 5 A schematic diagram of the light-emitting module in the first light-emitting mode;
[0052] Figure 9 for Figure 5 A schematic diagram showing the light-emitting module in the second light-emitting mode;
[0053] Figure 10 This is a partial cross-sectional view of a light-emitting module in one embodiment of this application, with a reference plane as the cross-section.
[0054] Figure 11 for Figure 5 A magnified schematic diagram of the local structure at point A;
[0055] Figure 12 for Figure 12 A magnified view of the structure at point B in the middle;
[0056] Figure 13 This is an exploded view of the backlight module in one embodiment of this application;
[0057] Figure 14 This is a schematic diagram of a backlight module in one embodiment of this application when the light-emitting module is in the first light-emitting mode;
[0058] Figure 15 This is a schematic diagram of a backlight module in one embodiment of this application when the light-emitting module is in the second light-emitting mode;
[0059] Figure 16 This is an exploded view of the display module in one embodiment of this application;
[0060] Figure 17 This is a schematic diagram of a display module in one embodiment of the present application when the light-emitting module is in the first light-emitting mode;
[0061] Figure 18 This is a schematic diagram of a display module in one embodiment of the present application when the light-emitting module is in the second light-emitting mode.
[0062] Explanation of reference numerals in the attached figures:
[0063] Backlight module 1, liquid crystal display 2, first polarizer 3, second polarizer 4, liquid crystal module LC, first glass substrate LC1, second glass substrate LC2, liquid crystal LC3;
[0064] Backlight module 10;
[0065] Light-emitting module 100;
[0066] Substrate 110, first surface m1;
[0067] Light-emitting element 120, first light-emitting element 120a, second light-emitting element 120b, first spacing h1, second spacing h2, fifth dimension D5;
[0068] Light guide 130, light guide channel p, first light guide channel pa, first dimension D1, first light guide surface s1, third dimension D3, second light guide channel pb, second dimension D2, second light guide surface s2, fourth dimension D4, arc transition part y, arc radius r, mounting hole k;
[0069] Diffuser 200;
[0070] Brightening component 300;
[0071] LCD monitor 20;
[0072] First direction F1, second direction F2, third direction F3, central axes L1, L2, reference plane E, first intersection line x1, second intersection line x2, light g. Detailed Implementation
[0073] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.
[0074] In the description of this application, it should be understood that if terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" appear, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.
[0075] Furthermore, where the terms "first" and "second" appear, these terms are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, where the term "multiple" appears, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.
[0076] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.
[0077] In this application, unless otherwise expressly specified and limited, the use of descriptions such as "above" or "below" the second feature indicates that the first and second features are in direct contact or indirect contact via an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. Similarly, "below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.
[0078] It should be noted that if an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. If an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. If so, the terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this application are for illustrative purposes only and do not represent the only possible implementation.
[0079] Figure 1 A schematic diagram of the structure of a display module in one embodiment of the related technology is shown; Figure 2 A schematic diagram of the display module structure is shown in another embodiment of the related technology; Figure 3 This diagram illustrates the structure of a liquid crystal module in its first state in the relevant technology. Figure 4A schematic diagram of a liquid crystal module in a second state in related technologies is shown; for ease of explanation, only the content related to the embodiments of this application is shown.
[0080] Please refer to Figure 1 and Figure 2 To prevent the driver from seeing the content displayed on the main display module while the vehicle is in motion, an LCD module is usually added. Figure 1 In the illustrated scenario, the display module includes a backlight module 1, a liquid crystal display 2, a first polarizer 3, a liquid crystal module LC, and a second polarizer 4, which are stacked sequentially. Figure 2 In the illustrated configuration, the display module includes a backlight module 1, a liquid crystal module LC, a first polarizer 3, a liquid crystal display 2, and a second polarizer 4, which are stacked sequentially. The liquid crystal module LC includes a first glass substrate LC1 and a second glass substrate LC2 disposed opposite to each other, and a liquid crystal LC3 located between the first glass substrate LC1 and the second glass substrate LC2. (Refer to reference...) Figure 3 and Figure 4 Different viewing angles can be obtained by controlling the direction of the liquid crystal LC3 to change the angle of the emitted light g. However, this control method results in high production costs.
[0081] Based on this, in order to solve at least some of the above problems, embodiments of this application reduce production costs while achieving privacy protection by changing the light emission mode.
[0082] Figure 5 This shows a partial cross-sectional view of the light-emitting module 100 in one embodiment of this application; Figure 6 It shows Figure 5 A top view of the structure of the light-emitting module 100 in which the substrate 110 and the light-emitting element 120 are coupled. Figure 7 It shows Figure 5 A top view of the light-emitting module 100 is shown; for ease of explanation, only the content related to the embodiments of this application is shown.
[0083] For ease of explanation, the directions involved in the embodiments of this application will be described first. The first direction F1 is the thickness direction of the substrate 110, the second direction F2 and the third direction F3 are perpendicular to the first direction F1, and the second direction F2 and the third direction F3 intersect each other. In the embodiments of this application, the first direction F1, the second direction F2, and the third direction F3 are perpendicular to each other.
[0084] Please refer to Figures 5 to 7 One embodiment of this application provides a light-emitting module 100, including a substrate 110, a plurality of light-emitting elements 120 and a light guide element 130.
[0085] The substrate 110 has a first surface m1 disposed along a first direction F1. That is, the first surface m1 can be considered to be approximately perpendicular to the first direction F1 and parallel to the second direction F2 and the third direction F3. The substrate 110 is a component for supporting the light-emitting element 120 and the light guide element 130. Electrically connected lines to the light-emitting element 120 can be disposed on the substrate 110 to control the state of the light-emitting element 120. The substrate 110 can be a PCB (Printed Circuit Board) or an FPC (Flexible Printed Circuit). The choice can be made according to the specific application, and no specific limitation is made here.
[0086] The plurality of light-emitting elements 120 are disposed on the first surface m1 of the substrate 110. The plurality of light-emitting elements 120 are arranged in multiple rows along the second direction F2 and in multiple columns along the third direction F3. It can be understood that when the second direction F2 and the third direction F3 are perpendicular to each other, the plurality of light-emitting elements 120 are arranged in a rectangular array. The light-emitting elements 120 can be LEDs, Mini LEDs, or other types of light-emitting devices, and no specific limitation is made here.
[0087] A light guide 130 is disposed on the first surface m1 of the substrate 110. The light guide 130 has multiple light guide channels p, each corresponding to one of the multiple light-emitting elements 120. That is, each light-emitting element 120 corresponds to one light guide channel p.
[0088] Among them, combined with reference Figure 6 The plurality of light-emitting elements 120 includes a plurality of first light-emitting elements 120a and a plurality of second light-emitting elements 120b. The first light-emitting elements 120a and second light-emitting elements 120b are arranged alternately along a second direction F2 and alternately along a third direction F3. That is, in each row of light-emitting elements 120, the first light-emitting elements 120a and second light-emitting elements 120b are arranged alternately, and in each column of light-emitting elements 120, the first light-emitting elements 120a and second light-emitting elements 120b are arranged alternately. Along the second direction F2, the light-emitting element 120 adjacent to the first light-emitting element 120a is the second light-emitting element 120b, and the light-emitting element 120 adjacent to the second light-emitting element 120b is the first light-emitting element 120a. Along the third direction F3, the light-emitting element 120 adjacent to the first light-emitting element 120a is the second light-emitting element 120b, and the light-emitting element 120 adjacent to the second light-emitting element 120b is the first light-emitting element 120a. (Refer to reference...) Figure 7Among the multiple light guide channels p, the light guide channel p corresponding to the first light-emitting element 120a is called the first light guide channel pa, and the light guide channel p corresponding to the second light-emitting element 120b is called the second light guide channel pb. The inner wall of the first light guide channel pa forms the first light guide surface s1, and the inner wall of the second light guide channel pb forms the second light guide surface s2. The emission angle of the light emitted by the first light-emitting element 120a through the corresponding first light guide channel pa is greater than the emission angle of the light emitted by the second light-emitting element 120b through the corresponding second light guide channel pb.
[0089] Figure 8 It shows Figure 5 A schematic diagram of the light-emitting module 100 in the first light-emitting mode; Figure 9 It shows Figure 5 A schematic diagram of the light-emitting module 100 in the second light-emitting mode; for ease of explanation, only the content related to the embodiments of this application is shown. Figure 8 and Figure 9 The framed arrow in the diagram represents light g. If the diagrams shown later involve framed arrows, they also represent light g, which will not be repeated here.
[0090] Combined with reference Figure 8 and Figure 9 The light-emitting module 100 has a first light-emitting mode in which a first light-emitting element 120a emits light, and a second light-emitting mode in which a second light-emitting element 120b emits light. It can be seen that because the light emission angle of the light emitted by the first light-emitting element 120a through the corresponding first light guide channel pa is greater than the light emission angle of the light emitted by the second light-emitting element 120b through the corresponding second light guide channel pb, the light-emitting range of the light-emitting module 100 in the first light-emitting mode is greater than the light-emitting range in the second light-emitting mode. That is to say, when the light-emitting module 100 is in the first light-emitting mode, personnel, including the driver, can view the corresponding display content; when the light-emitting module 100 is in the second light-emitting mode, personnel other than the driver can view the corresponding display content, thereby achieving the required privacy protection function for the driver.
[0091] Therefore, by using the light guide 130 and the arrangement of each light-emitting element 120 as shown above, and by using the first and second light-emitting modes of the light-emitting module 100, it is possible to reduce production costs while achieving privacy protection.
[0092] In some embodiments, please continue to refer to Figure 5The maximum size of the exit of the first light guide channel pa is the first size D1, and the maximum size of the exit of the second light guide channel pb is the second size D2, where the first size D1 is greater than the second size D2. This results in the emission angle of the light emitted by the first light-emitting element 120a through the corresponding first light guide channel pa being greater than the emission angle of the light emitted by the second light-emitting element 120b through the corresponding second light guide channel pb.
[0093] In some embodiments, please continue to refer to Figure 5 The ratio of the first dimension D1 to the second dimension D2 is greater than 3. This further enhances the privacy protection. It should be noted that the upper limit of the ratio of the first dimension D1 to the second dimension D2 can be set according to specific needs such as the available space, and no specific limit is set here.
[0094] In some embodiments, please continue to refer to Figure 5 The central axis of the first light guide channel pb coincides with the central axis of the corresponding first light-emitting element 120a; and / or, the central axis of the second light guide channel pb coincides with the central axis of the corresponding second light-emitting element 120b. Figure 5 For example, the diagram illustrates the situation where the central axis of the first light guide channel pa coincides with the central axis of the corresponding first light-emitting element 120a at central axis L1, and the central axis of the second light guide channel pb coincides with the central axis of the corresponding second light-emitting element 120b at central axis L2. This improves display performance while facilitating light guidance.
[0095] In some embodiments, please continue to refer to Figure 5 Along the first direction F1, the cross-sectional area of the second light guide channel pb remains unchanged. This helps to improve the privacy protection effect while achieving a certain light emission range.
[0096] In some embodiments, please continue to refer to Figure 5 Along the first direction F1, the cross-sectional area of the first light guide channel pa shows an increasing trend.
[0097] It should be noted that "increasing trend" refers to an overall trend of increasing. This increasing trend can include phased increases, such as an initial increase followed by a period of no change, and then another increase; it can also include continuous increases, such as a consistent rate of increase or an initial rapid increase followed by a slower increase. Taking an increasing trend of initial increase, then no change, and then further increase as an example, the increasing trend is divided into three phases: an initial increase phase, a period of no change, and a subsequent increase phase. As long as the overall trend is roughly increasing, it is acceptable. Settings can be adjusted according to actual usage scenarios; no specific restrictions are imposed here. For examples, please continue to refer to [link / reference]. Figure 5Along the first direction F1, the cross-sectional area of the first light guide channel pa is larger the closer it is to the exit of the first light guide channel pa.
[0098] Thus, the first light guide channel pa can expand the light emission angle of the corresponding second light-emitting element 120b, thereby expanding the light emission range.
[0099] Figure 10 This diagram shows a partial cross-sectional view of a light-emitting module 100 with reference plane E as the cross-section in one embodiment of this application; for ease of explanation, only the content related to the embodiment of this application is shown.
[0100] In some embodiments, please refer to Figure 10 and in conjunction with reference Figure 5 Let the plane passing through the central axis of the first light guide channel pa be defined as the reference plane E. Figure 10 For example, the diagram illustrates cases where the reference plane E is parallel to the first direction F1 and the third direction F3, and perpendicular to the second direction F2. The inner wall of the first light guide channel pa intersects the reference plane E at a first intersection line x1 and a second intersection line x2. The first intersection line x1 and the second intersection line x2 have proximal ends that are close to each other and face the substrate 110, and distal ends that are far from each other and far from the substrate 110. That is, it is possible to form a situation where, as illustrated in the previous embodiment, the cross-sectional area of the first light guide channel pa increases along the first direction F1. Wherein, the first intersection line x1 and the second intersection line x2 are straight lines; or, the first intersection line x1 and the second intersection line x2 are arcs. Figure 10 For example, the case where the first intersection line x1 and the second intersection line x2 are arcs is illustrated.
[0101] Thus, the structure of the corresponding light guide channel p can be constructed according to the specific application, without making specific restrictions here.
[0102] In some embodiments, please continue to refer to Figure 5 and Figure 10 The dimension of the first light guide channel pa along the first direction F1 is larger than the dimension of the corresponding first light-emitting element 120a along the first direction F1; the dimension of the second light guide channel pb along the first direction F1 is larger than the dimension of the corresponding second light-emitting element 120b along the first direction F1. Figure 5 and Figure 10 In the illustrated scenario, the dimension of the first light guide channel pa along the first direction F1 is the third dimension D3, the dimension of the second light guide channel pb along the first direction F1 is the fourth dimension D4, the dimension of the first light-emitting element 120a along the first direction F1 and the dimension of the second light-emitting element 120b along the first direction F1 are both the fifth dimension D5, the third dimension D3 is equal to the fourth dimension D4, and both the third dimension D3 and the fourth dimension D4 are greater than the fifth dimension D5.
[0103] This helps improve the light guiding effect, thereby enhancing the privacy protection effect.
[0104] In some embodiments, please continue to refer to Figure 5 and Figure 10 The ratio of the third dimension D3 to the fifth dimension D5 is greater than 4; and / or, the ratio of the fourth dimension D4 to the fifth dimension D5 is greater than 4. Thus, the difference in dimensions along the first direction F1 can further enhance the light-guiding effect, thereby further improving the privacy protection effect. It should be noted that the upper limits of the ratio of the third dimension D3 to the fifth dimension D5 and the ratio of the fourth dimension D4 to the fifth dimension D5 can be set according to specific usage conditions, and no specific restrictions are imposed here.
[0105] In some embodiments, please continue to refer to Figure 5 and Figure 10 The light guide 130 has multiple mounting holes k. Figure 5 and Figure 10 In the diagram, the approximate location of the mounting holes k is indicated by dashed lines. Each mounting hole k connects to a light guide channel p, and these mounting holes k correspond one-to-one with the multiple light-emitting elements 120. The light-emitting element 120 extends into the light guide channel p through the corresponding mounting hole k. It can be understood that the size of the mounting hole k can be determined according to the size of the corresponding light-emitting element 120. This facilitates the installation of the light guide element 130.
[0106] Figure 11 It shows Figure 5 A magnified schematic diagram of the local structure at point A; Figure 12 It shows Figure 12 A magnified schematic diagram of a portion of the structure at point B; for ease of explanation, only the content relevant to the embodiments of this application is shown.
[0107] In some embodiments, please continue to refer to 5, and in conjunction with reference to Figure 11 and Figure 12 The light guide channel p has a rounded transition portion y on one side edge away from the substrate 110. For example, the radius r of the rounded transition portion y can be greater than or equal to 0.5 mm. The upper limit of the radius r of the rounded transition portion y can be set according to the usage requirements, and is not specifically limited here.
[0108] Thus, the arc transition portion y can improve the situation where the light guide 130 is damaged when it is assembled with bed light guide 130 or subsequent components.
[0109] In some embodiments, please continue to refer to Figure 5 The light guide component 130 can be made of plastic or metal. This allows for flexible selection of the appropriate material based on usage requirements.
[0110] In some embodiments, please continue to refer to Figure 5 The internal structure of the light guide 130 can be solid or hollow. This allows for flexible configuration of the light guide 130 according to usage requirements, as long as the desired light guiding effect is achieved; no specific limitations are imposed here.
[0111] In some embodiments, please continue to refer to Figure 5 The reflectivity of the inner wall of the light guide channel p is greater than 90%. In this way, the reflection of light can be used for light guiding, which is beneficial to the light guiding process.
[0112] In some embodiments, please continue to refer to Figure 6 and Figure 7 Each row of light-emitting elements 120 is arranged at equal intervals along a third direction F3; and / or, each column of light-emitting elements 120 is arranged at equal intervals along a second direction F2. Figure 6 and Figure 7 For example, the spacing between each row of light-emitting elements 120 along the third direction F3 is the first spacing h1, and the spacing between each column of light-emitting elements 120 along the second direction F2 is the second spacing h2. The first spacing h1 is equal to the second spacing h2. Of course, in some other embodiments, the first spacing h1 and the second spacing h2 may not be equal.
[0113] Thus, arranging the light-emitting elements 120 at equal intervals along the third direction F3 in each row and at equal intervals along the second direction F2 in each column is beneficial to improving the display effect and makes it easier to control the light-emitting state of the corresponding light-emitting elements 120.
[0114] In some embodiments, please continue to refer to Figure 5 , Figure 8 and Figure 9 In the first light-emitting mode, the brightness of each first light-emitting element 120a may be the same or different; and / or, in the second light-emitting mode, the brightness of each second light-emitting element 120b may be the same or different. Thus, the light-emitting elements 120 in different areas can be dimmed to meet different display requirements.
[0115] Figure 13 An exploded view of the backlight module 10 in one embodiment of this application is shown; Figure 14 This illustration shows a schematic diagram of the backlight module 10 in one embodiment of the present application when the light-emitting module 100 is in a first light-emitting mode; Figure 15 This diagram illustrates a backlight module 10 in one embodiment of this application when the light-emitting module 100 is in the second light-emitting mode. For ease of explanation, only the content relevant to the embodiment of this application is shown. Only a portion of the structure of the light-emitting module 100 is shown, as is the case in the following diagrams, and will not be described in detail again.
[0116] Based on the same inventive concept, please refer to Figures 13 to 15This application provides a backlight module 10, including the light-emitting module 100, diffuser 200, and brightening element 300 as described in any of the above embodiments. The diffuser 200 and brightening element 300 are sequentially stacked on the side of the light guide 130 facing away from the substrate 110. (Refer to reference...) Figure 14 and Figure 15 It can be seen that when the light-emitting module 100 is in the first light-emitting mode, the light-emitting range of the backlight module 10 is greater than when the light-emitting module 100 is in the second light-emitting mode.
[0117] The advantages of the light-emitting module 100 illustrated in the above embodiments are also present in the backlight module 10, and will not be repeated here.
[0118] Figure 16 An exploded view of the display module in one embodiment of this application is shown; Figure 17 This illustration shows a schematic diagram of a display module in one embodiment of the present application when the light-emitting module 100 is in a first light-emitting mode; Figure 18 This illustration shows a schematic diagram of a display module in one embodiment of the present application when the light-emitting module 100 is in a second light-emitting mode; for ease of explanation, only the content related to the embodiment of the present application is shown.
[0119] Based on the same inventive concept, please refer to Figures 16 to 18 This application provides a display module, including the backlight module 10 in any of the above embodiments. Specifically, in the backlight module 10, the light-enhancing element 300 is provided with a liquid crystal display 20 on the side opposite to the diffuser 200 to achieve the required display function. (Refer to reference...) Figure 17 and Figure 18 As can be seen, the light emission range of the display module is greater when the light emission module 100 is in the first light emission mode than when the light emission module 100 is in the second light emission mode.
[0120] The advantages of the light-emitting module 100 illustrated in the above embodiments are also present in this display module, and will not be repeated here.
[0121] Based on the same inventive concept, this application provides an electronic device including the display module in any of the above embodiments.
[0122] The advantages of the light-emitting module 100 illustrated in the above embodiments are also present in this display module, and will not be repeated here.
[0123] It should be noted that the light-emitting module 100 provided in this application embodiment includes, but is not limited to, electronic devices with display functions that can be used in vehicles. Specifically, the light-emitting module 100 provided in the above embodiment can be applied to fields such as mobile terminals, bionic electronics, electronic skin, wearable devices, in-vehicle devices, Internet of Things devices, and artificial intelligence devices. For example, the above electronic devices can be mobile terminals, tablets, PDAs, iPods, smartwatches, laptops, televisions, monitors, etc.
[0124] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.
[0125] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.
Claims
1. A light emitting module, characterized in that include: The substrate has a first surface disposed along a first direction; Multiple light-emitting elements are disposed on the first surface; the multiple light-emitting elements are arranged in multiple rows along the second direction and in multiple columns along the third direction. and A light guide is disposed on the first surface; the light guide has multiple light guide channels, and the multiple light guide channels correspond one-to-one with the multiple light-emitting elements; The plurality of light-emitting elements includes a plurality of first light-emitting elements and a plurality of second light-emitting elements, wherein the first light-emitting elements and the second light-emitting elements are arranged alternately along the second direction and alternately along the third direction; among the plurality of light-guiding channels, the light-guiding channel corresponding to the first light-emitting element is the first light-guiding channel, and the light-guiding channel corresponding to the second light-emitting element is the second light-guiding channel; along the first direction, the cross-sectional area of the first light-guiding channel is larger as it approaches the exit of the first light-guiding channel, while the cross-sectional area of the second light-guiding channel remains unchanged; The light emission angle of the light emitted by the first light-emitting element through the corresponding first light guide channel is greater than the light emission angle of the light emitted by the second light-emitting element through the corresponding second light guide channel; The light-emitting module has a first light-emitting mode in which the first light-emitting element emits light, and a second light-emitting mode in which the second light-emitting element emits light; The second direction and the third direction intersect each other and are both perpendicular to the first direction.
2. The light-emitting module according to claim 1, characterized in that, The maximum size of the exit of the first light guide channel is greater than the maximum size of the exit of the second light guide channel.
3. The light-emitting module according to claim 2, characterized in that, The ratio of the maximum size of the exit of the first light guide channel to the maximum size of the exit of the second light guide channel is greater than 3.
4. The light-emitting module according to any one of claims 1-3, characterized in that, The central axis of the first light guide channel coincides with the central axis of the light-emitting element corresponding to the first light guide channel; and / or The central axis of the second light guide channel coincides with the central axis of the light-emitting element corresponding to the second light guide channel.
5. The light-emitting module according to any one of claims 1-3, characterized in that, The plane passing through the central axis of the first light guide channel is defined as the reference plane; The inner wall of the first light guide channel intersects the reference surface at a first intersection line and a second intersection line; The first intersection line and the second intersection line have proximal ends that are close to each other and face the substrate, and distal ends that are far from each other and away from the substrate; Wherein, the first intersection line and the second intersection line are straight lines; or The first and second intersection lines are arcs.
6. The light-emitting module according to any one of claims 1-3, characterized in that, The dimension of the first light guide channel along the first direction is larger than the dimension of the corresponding light-emitting element along the first direction; The dimension of the second light guide channel along the first direction is greater than the dimension of the corresponding light-emitting element along the first direction.
7. The light-emitting module according to claim 6, characterized in that, The ratio of the dimension of the first light guide channel along the first direction to the dimension of the corresponding light-emitting element along the first direction is greater than 4; and / or The ratio of the dimension of the second light guide channel along the first direction to the dimension of the corresponding light-emitting element along the first direction is greater than 4.
8. The light-emitting module according to any one of claims 1-3, characterized in that, The light guide is provided with a plurality of mounting holes, each mounting hole connecting to a light guide channel. The plurality of mounting holes correspond one-to-one with the plurality of light-emitting elements, and the light-emitting elements extend into the light guide channels through their corresponding mounting holes; and / or The light guide channel has a rounded transition portion on the side edge opposite to the substrate; and / or The light guide is made of plastic or metal; and / or The internal structure of the light guide can be solid or hollow.
9. The light-emitting module according to any one of claims 1-3, characterized in that, The reflectivity of the inner wall of the light guide channel is greater than 90%.
10. The light-emitting module according to any one of claims 1-3, characterized in that, Each row of light-emitting elements is arranged at equal intervals along the third direction; and / or Each column of light-emitting elements is arranged at equal intervals along the second direction.
11. The light-emitting module according to any one of claims 1-3, characterized in that, In the first light-emitting mode, the brightness of each of the first light-emitting elements is the same or the brightness varies; and / or In the second light-emitting mode, the brightness of each of the second light-emitting elements is the same or the brightness varies.
12. A backlight module, characterized in that, Includes a diffuser, a brightening element, and a light-emitting module as described in any one of claims 1-11; The diffuser and the light-enhancing element are stacked sequentially on the side of the light guide element that is away from the substrate.
13. A display module, characterized in that, Includes the backlight module as described in claim 12.
14. An electronic device, characterized in that, Includes the display module as described in claim 13.