TWM615225U - Backlight module and display device - Google Patents

Abstract

A backlight module including a backplane, a light-emitting module and a transparent frame is provided. The backplane has a bottom and a side wall surrounding the bottom. The light-emitting module is arranged on the bottom of the backplane and is adapted providing an illumination beam. The transparent frame is arranged between the side wall and the light-emitting module. The light-transmitting frame has a light-incident surface facing the light-emitting module, a reflective surface facing the light-emitting module, and a light-emitting surface on the top of the light-transmitting frame. The transparent frame includes a first part and a second part. The light-incident surface and the reflective surface are located on the first part. The light-emitting surface is located on the second part, and the second part extends away from the side wall.

Description

Backlight module and display device

The present invention relates to a light-emitting module and an electronic device, and particularly relates to a backlight module and a display device.

The liquid crystal display includes a liquid crystal display panel and a backlight module. The backlight module can provide a surface light source to the liquid crystal display panel so that the user can watch the image displayed on the liquid crystal display panel. Generally speaking, the backlight module can be divided into a direct type backlight and a side type backlight.

In current narrow-frame displays, a common practice is to use plastic frames to carry light guide elements (such as side-entry light guide plates or direct-type diffusers) and optical film layers, and use plastic frames and buffer strips to carry the display panel. The way to achieve the purpose of the narrow frame of the display. However, since the plastic frame and the cushion rubber strip are opaque, the frame size of this method is limited by the width of the bearing surface of the plastic frame, so the effect of the narrow frame is still limited. At present, the design of the bearing surface of the plastic frame needs to be at least 1.0 mm or more. In addition, since the display panel is placed on the bearing surface of the plastic frame, the precision and stability requirements for the plastic frame assembly are also high. A slight deviation will cause the plastic frame to enter an effective light-emitting screen and block the display pixels.

The "prior art" paragraph is only used to help understand the content of the new creation. Therefore, the content disclosed in the "prior art" paragraph may contain some conventional technologies that do not constitute the common knowledge in the technical field. The content disclosed in the "prior art" paragraph does not represent the content or the problem to be solved by one or more embodiments of the creation of the new model, and it has been known or recognized by those with ordinary knowledge in the technical field before the application of the creation of the new model .

The present invention provides a backlight module and a display device with extremely narrow frame or no frame visual effect.

The other purposes and advantages of the novel creation can be further understood from the technical features disclosed in the novel creation.

In order to achieve one or part or all of the above-mentioned purposes or other purposes, the present invention provides a backlight module, which includes a backplane, a light-emitting module, and a light-transmitting frame. The back plate has a bottom and side walls surrounding the bottom. The light-emitting module is arranged on the bottom of the back plate and is suitable for providing illumination light beams. The light-transmitting frame has a light-incident surface facing the light-emitting module, a light-guiding surface facing the light-emitting module, and a light-emitting surface on the top of the light-transmitting frame. The light-transmitting frame includes a first part and a second part. The first part is disposed between the side wall and the light-emitting module. The light incident surface and the light guide surface are located in the first part. The light emitting surface is located in the second part, and the second part extends in a direction away from the side wall. The extension direction of the first part is perpendicular to the extension direction of the second part.

In an embodiment of the present invention, the above-mentioned backlight module further includes a light-transmitting adhesive member disposed between the light-emitting module and the light-incident surface. The first part of the sub-beams of the illuminating light beam are transferred from the light-emitting module to the light-transmitting frame through the light-transmitting adhesive.

In an embodiment of the present invention, the cross-section of the above-mentioned transparent frame is an L-shaped structure.

In an embodiment of the present invention, the interior of the above-mentioned transparent frame includes a plurality of diffusion particles.

In an embodiment of the present invention, at least one of the light incident surface, the light guide surface, and the light exit surface of the above-mentioned transparent frame has a microstructure or an atomized surface.

In an embodiment of the present invention, the above-mentioned backlight module further includes a first buffer member, which is arranged between the light guide surface of the light-transmitting frame and the back plate, wherein the first buffer member is a reflective sheet and an atomized layer , Coating with grayscale distribution or membrane with microstructure.

In an embodiment of the present invention, the above-mentioned backlight module further includes a second buffer member. The second buffer member is overlapped and arranged on the light-emitting surface of the light-transmitting frame, wherein the second buffer member is a light-transmitting element, and the inside of the second buffer member includes a plurality of diffusion particles.

In an embodiment of the present invention, the above-mentioned backlight module further includes a second buffer member. The second buffer part is a metal part or a plastic part, which includes a first buffer part and a second buffer part, wherein the extension direction of the first buffer part is parallel to the extension direction of the second part. The second buffer portion extends from the first buffer portion and covers at least a part of the side wall.

In an embodiment of the present invention, the above-mentioned light-emitting module includes at least a light-emitting element and a light-guiding element. The light-transmitting adhesive is connected to and covers the side surface of the light guide element.

In an embodiment of the present invention, the above-mentioned backlight module further includes at least one optical film and a second buffer member. At least one optical film is disposed on the light-emitting surface of the light-transmitting frame. The second buffer member is overlapped and disposed on at least one optical film, wherein the second buffer member is a light-transmitting element, and the inside of the second buffer member includes a plurality of diffusion particles.

In order to achieve one or part or all of the above-mentioned purposes or other purposes, the present invention also provides a display device including a backlight module and a display module. The backlight module includes a backplane, a light-emitting module, and a transparent frame. The back plate has a bottom and side walls surrounding the bottom. The light-emitting module is arranged on the bottom of the back plate and is suitable for providing illumination light beams. The light-transmitting frame has a light-incident surface facing the light-emitting module, a light-guiding surface facing the light-emitting module, and a light-emitting surface on the top of the light-transmitting frame. The light-transmitting frame includes a first part and a second part. The first part is disposed between the side wall and the light-emitting module. The light incident surface and the light guide surface are located in the first part. The light emitting surface is located in the second part, and the second part extends in a direction away from the side wall. The extension direction of the first part is perpendicular to the extension direction of the second part. The display modules are overlapped and arranged on the light-emitting surface of the light-transmitting frame.

In an embodiment of the present invention, the above-mentioned backlight module further includes a second buffer member. The second buffer member is overlapped and arranged on the light-emitting surface of the light-transmitting frame, wherein the second buffer member is arranged between the light-transmitting frame and the display module.

Based on the above, in the backlight module and the display device in the creation of the present invention, the backlight module includes a back plate, a light-emitting module, and a transparent frame. The light-transmitting frame is arranged between the side wall of the back plate and the light-emitting module. The light-transmitting frame body includes a first part and a second part, and the second part extends in a direction away from the side wall, and the extension direction of the first part is perpendicular to the extension direction of the second part. In this way, the light-transmitting frame as a part of the frame of the display device can also help transmit the illuminating light beam, so that the user can experience the borderless visual effect of the display device through observation.

In order to make the above-mentioned features and advantages of the new creation more obvious and understandable, the following specific examples are given in conjunction with the accompanying drawings to describe in detail as follows.

The aforementioned and other technical content, features and effects of the creation of the new model will be clearly presented in the following detailed description of a preferred embodiment with reference to the drawings. The directional terms mentioned in the following embodiments, for example: up, down, left, right, front or back, etc., are only directions for referring to the attached drawings. Therefore, the directional terms used are used to illustrate and not to limit the creation of the new model.

FIG. 1 is a schematic cross-sectional view of a part of the display device according to an embodiment of the new creation. Please refer to Figure 1. The display device 10 of this embodiment includes a backlight module 100 and a display module 50. The backlight module 100 is adapted to provide an illuminating light beam L to the display module 50, and the display module 50 is disposed on the backlight module 100, wherein The overlapping direction of the display module 50 and the backlight module 100 is the first direction D1. In this embodiment, the display module 50 is, for example, a liquid crystal display panel or other non-self-luminous display panel. The display device 10 of this embodiment is, for example, a borderless display or a display module of a portable electronic device, such as a tablet computer or a smart phone. The user can experience the borderless vision of the display device 10 when viewing the display. Effect, but the new creation is not limited to this.

In detail, the backlight module 100 includes a back plate 110, a light-emitting module 120 and a transparent frame 130.

The back plate 110 has a bottom 112 and a side wall 114 surrounding the bottom 112, and the side wall 114 is perpendicular to the bottom 112 of the back plate 110. However, in other embodiments, the side wall 114 of the back plate 110 may be designed not to be perpendicular to the bottom 112 of the back plate 110, and the present invention is not limited to this. Specifically, the side wall 114 is connected to the bottom 112 and extends from the bottom 112 in a direction away from the bottom 112 (ie, the first direction D1). The side wall 114 is composed of, for example, at least one side plate.

In this embodiment, the light-emitting module 120 is disposed on the bottom 112 of the back plate 110 (that is, the light-emitting module 120 overlaps the bottom 112 of the back plate 110), and is suitable for providing an illumination light beam L. The light-emitting module 120 is a side-in -Style light-emitting components. Specifically, the light-emitting module 120 includes at least one light-emitting element (not shown) and a light-guiding element 122. The light-guiding element 122 is overlapped with the display module 50. The light-emitting element is, for example, a light-emitting diode light bar or a plurality of light-emitting elements. The pole body, the light guide element 122 is, for example, a light guide plate. However, in other embodiments, the light-emitting module 120 can be a direct-type light-emitting component, and the invention of the present invention is not limited to this.

At least a part of the transparent frame 130 is disposed between the side wall 114 of the back plate 110 and the light-emitting module 120. Specifically, the transparent frame 130 includes a first portion 132 and a second portion 134. The first portion 132 is disposed between the side wall 114 of the back plate 110 and the light emitting module 120, and the second portion 134 is connected to the first portion 132 and faces toward The direction away from the side wall 114 of the back plate 110 extends, and the extending direction of the first portion 132 is perpendicular to the extending direction of the second portion 134. For example, the first portion 132 extends along the first direction D1, and the second portion 134 extends along the second direction D2. The first direction D1 is, for example, perpendicular to the second direction D2. In this embodiment, the cross-section of the light-transmitting frame 130 is an L-shaped (or inverted L-shaped) structure, as shown in FIG. 1, but in other embodiments, the cross-section of the light-transmitting frame 130 can also be designed to be T-shaped structure, the creation of this new type is not limited to this.

The light-transmitting frame 130 has a light-incident surface S1 facing the light-emitting module 120, a light-guiding surface S2 facing the light-emitting module 120, and a light-emitting surface S3 located on the top of the light-transmitting frame 130. Specifically, the light incident surface S1 and the light guide surface S2 are located in the first portion 132, and the light output surface S3 is located in the second portion 134. Therefore, the first part of the sub-beam L1 of the illumination beam L provided by the light-emitting module 120 enters the first part 132 through the light incident surface S1, and the first part of the sub-beam L1 of the illumination beam L is guided by the light guide surface S2 of the first part 132 To the second part 134. Finally, the first part of the sub-beam L1 of the illumination beam L transmitted to the second part 134 is emitted through the light-emitting surface S3, and the transparent frame 130 of the display device 10 can also assist in the transmission of the illumination beam L. In this way, the display module 50 of the display device 10 is overlapped and arranged on the light-emitting surface S3 of the light-transmitting frame 130, and the first part of the sub-beam L1 emitted from the light-emitting surface S3 of the light-transmitting frame 130 can provide the edge of the display module 50 The backlight of the area, and the second part of the sub-beam L2 of the illumination beam L is emitted from the front view direction (that is, the direction toward the display module 50) to provide the backlight required by the display module 50. Therefore, the user can observe the visual effect of the extremely narrow frame or no frame of the display device 10.

In this embodiment, the backlight module 100 further includes a light-transmitting adhesive member 140 disposed between the light-emitting module 120 and the light incident surface S1 of the light-transmitting frame 130. Specifically, the light-transmitting adhesive 140 is connected to and covers the side surface S4 of the light guide element 122. The side surface S4 is, for example, a side surface of the light guide element 122 facing the light-transmitting frame 130. Specifically, the first part of the sub-beam L1 of the illuminating light beam L is emitted from the side surface S4 of the light-emitting module 120 and is transmitted to the light-transmitting frame 130 through the light-transmitting adhesive 140. In this way, the light-transmitting adhesive 140 can increase the stability of the light guide element 122 and the light-transmitting frame 130, and the light-transmitting adhesive 140 can reduce the scattering of the material interface or the loss of refracted light to improve the light use efficiency. .

In addition, in this embodiment, the backlight module 100 can also optionally include a first buffer 150 disposed between the light guide surface S2 of the transparent frame 130 and the side wall 114 of the back plate 110. In this embodiment, the first buffer member 150 is, for example, a coating with gray scale distribution. Specifically, the first buffer 150 can distribute coatings with different gray levels at different heights of the backlight module 100 according to the incident angle of the light beam to produce different levels of light absorption effects. In this way, a good display effect can be improved. In other embodiments. The first buffer 150 may be a reflective sheet, an atomized layer, or a micro-structured film (for example, a thin film or a beam splitter), which is suitable for guiding the light beam to the light emitting surface S3 more efficiently. The invention is not limited to this.

On the other hand, in this embodiment, the backlight module 100 further includes a second buffer member 160. The second buffer member 160 is overlapped and arranged on the light-emitting surface S3 of the light-transmitting frame 130 and is arranged between the display module 50 and the light-transmitting frame 130. Specifically, the second buffer member 160 is a light-transmitting element, and the inside of the second buffer member 160 may optionally include a plurality of diffusion particles. In this way, the illuminating light beam L can be diffused or other kinds of uniform optical effects when transmitted from the light-emitting surface S3 to the transparent frame 130, thereby providing a good display effect. In addition, the buffering effect between the backlight module 100 and the display module 50 can also be obtained. However, the present invention does not limit the material and light transmittance of the second buffer member 160, and also does not limit the concentration and type of diffusion particles.

In one embodiment, the inside of the light-transmitting frame 130 may optionally include a plurality of diffusing particles, so that the passing light beam can be diffused or other kinds of uniform optical effects, thereby providing a good light guiding effect and/or display Effect. The new creation does not limit the concentration and types of diffusion particles.

In an embodiment, at least one of the light incident surface S1, the light guide surface S2, and the light output surface S3 of the transparent frame 130 has a microstructure or an atomized surface. For example, an atomizing surface (different areas can have different degrees of atomization) can be configured on the light incident surface S1 (all or part of the light incident surface S1) to diffuse the incoming light beam or produce other types of uniform optical effects and Direct the light beam to the light-emitting surface S3. Alternatively, an atomizing surface can be arranged on the light guide surface S2 to make the light beam transmitted to the light guide surface S2 produce a uniform optical effect and guide the light beam to the light exit surface S3. Alternatively, microstructures can be arranged on the light-emitting surface S3 to increase the light intensity or collimation of the emitted light beam, thereby improving a good display effect. In one embodiment, the above embodiments can be combined arbitrarily and used according to requirements, and the creation of the present invention is not limited to this.

In this embodiment, the backlight module 100 may optionally include at least one optical film 170 disposed on the light emitting surface S3 of the transparent frame 130, and the at least one optical film 170 is suitable for improving the brightness and uniformity of the backlight. The optical film 170 is, for example, a diffusing film, a diffusion film, a brightness enhancement film or other functional films, and the creation of the present invention is not limited thereto. In this embodiment, the second buffer member 160 is overlapped and disposed on the optical film 170, and for example, is disposed between the display module 50 and the optical film 170.

2 is a schematic cross-sectional view of a part of the display device according to another embodiment of the new creation. Please refer to Figure 2. The display device 10A of this embodiment is similar to the display device 10 shown in FIG. 1. The difference between the two is that the second buffer member 160A can be selected from a metal member or a plastic member, and at least a part of the second buffer member 160A is disposed between the transparent frame 130 and the display module 50. Specifically, the second buffer member 160A includes a first buffer portion 162 and a second buffer portion 164. Wherein, the extension direction of the first buffer portion 162 is parallel to the second portion 134 of the transparent frame 130, and the first buffer portion 162 is disposed between the transparent frame 130 and the display module 50. Specifically, the first buffer The portion 162 is disposed between the display module 50 and the at least one optical film 170 and is overlapped and arranged on the optical film 170. The second buffer portion 164 extends from the first buffer portion 162 and covers at least a part of the side wall 114. In detail, the second buffer portion 164 covers at least a part of the surface of the side wall 114 away from the light emitting module 120. In this way, a good cushioning effect can be obtained by the arrangement of the second cushioning member 160A, and a good appearance and protection effect can be obtained by disposing the covering part of the side wall 114 at the same time.

In an embodiment, the second buffer member 160A can also use a light-transmitting element (or a semi-transmissive element) as shown in FIG. 1, and the first buffer portion 162 of the second buffer member 160A can be further selectively extended and It is overlapped and arranged on the light-emitting surface S3 of the light-transmitting frame 130, and the inside of the second buffer member 160A may include a plurality of diffusion particles, so that the passing light beam can be diffused or other kinds of uniform optical effects, thereby providing a good display effect . The new creation is not limited to this. In particular, the optical film 170 can be selectively supported or not supported on the side wall 114 of the back plate 110.

In summary, in the backlight module and the display device in the creation of the new model, the backlight module includes a backplane, a light-emitting module, and a transparent frame. The light-transmitting frame is arranged between the side wall of the back plate and the light-emitting module. The light-transmitting frame body includes a first part and a second part, and the second part extends in a direction away from the side wall, and the extension direction of the first part is perpendicular to the extension direction of the second part. In this way, the light-transmitting frame as a part of the frame of the display device can also assist in transmitting the illuminating light beam, so that the user can observe the visual effect of the extremely narrow frame or no frame of the display device.

However, the above are only the preferred embodiments of the creation of the new model, and should not be used to limit the scope of implementation of the creation of the new model, that is, the simple equivalent made according to the scope of the patent application for the creation of the new model and the content of the new creation description Changes and modifications are still within the scope of the new creation patent. In addition, any embodiment of the new creation or the scope of the patent application does not have to achieve all the purposes or advantages or features disclosed in the new creation. In addition, the abstract part and the title are only used to assist the search of patent documents, and are not used to limit the scope of rights of the creation of the new model. In addition, the terms "first" and "second" mentioned in this specification or the scope of the patent application are only used to name the element (element) or to distinguish different embodiments or ranges, and are not used to limit the number of elements. Upper or lower limit.

10, 10A: display device 50: display panel 100, 100A: Backlight module 110: Backplane 112: bottom 114: sidewall 120: Light-emitting module 122: light guide element 130: Transparent frame 132: Part One 134: Part Two 140: Light-transmitting adhesive 150: The first buffer 160, 160A: second buffer 162: First buffer 164: The second buffer 170: optical diaphragm D1: First direction D2: second direction L: Illumination beam L1: The first part of the sub-beam L2: The second part of the sub-beam S1: Light incident surface S2: Light guide surface S3: Glossy surface S4: side

FIG. 1 is a schematic cross-sectional view of a part of the display device according to an embodiment of the new creation. 2 is a schematic cross-sectional view of a part of the display device according to another embodiment of the new creation.

10: Display device

50: display panel

100: Backlight module

110: Backplane

112: bottom

114: sidewall

120: Light-emitting module

122: light guide element

130: Transparent frame

132: Part One

134: Part Two

140: Light-transmitting adhesive

150: The first buffer

160: second buffer

170: optical diaphragm

D1: First direction

D2: second direction

L: Illumination beam

L1: The first part of the sub-beam

L2: The second part of the sub-beam

S1: Light incident surface

S2: Light guide surface

S3: Glossy surface

S4: side

Claims (12)

A backlight module includes: A back plate having a bottom and a side wall surrounding the bottom; A light emitting module, which is disposed on the bottom of the back plate, and is suitable for providing an illuminating light beam; and A light-transmitting frame having a light-incident surface facing the light-emitting module, a light-guiding surface facing away from the light-emitting module, and a light-emitting surface on the top of the light-transmitting frame, the light-transmitting frame The body includes a first part and a second part, the first part is disposed between the side wall and the light emitting module, the light incident surface and the light guide surface are located in the first part, and the light exit surface It is located in the second part, and the second part extends in a direction away from the side wall, and the extension direction of the first part is perpendicular to the extension direction of the second part. The backlight module according to claim 1, further comprising: A light-transmitting adhesive member is disposed between the light-emitting module and the light incident surface, and a first part of the sub-beam of the illumination beam is transferred from the light-emitting module to the light-transmitting member through the light-transmitting adhesive member. Light frame. The backlight module according to claim 1, wherein the cross section of the light-transmitting frame body is an L-shaped structure. The backlight module according to claim 1, wherein the inside of the transparent frame includes a plurality of diffusion particles. The backlight module according to claim 1, wherein at least one of the light incident surface, the light guide surface, and the light exit surface of the transparent frame has a microstructure or an atomized surface. The backlight module according to claim 1, further comprising: A first buffer member is disposed between the light guide surface of the light-transmitting frame and the back plate, wherein the first buffer member is a reflective sheet, an atomized layer, and a coating with gray scale distribution Or a membrane with a microstructure. The backlight module according to claim 1, further comprising: A second buffering member, the second buffering member is overlapped and disposed on the light-emitting surface of the light-transmitting frame, wherein the second buffering member is a light-transmitting element, and the inside of the second buffering member includes a plurality of A diffusion particle. The backlight module according to claim 1, further comprising: A second buffer member, the second buffer member is a metal member or a plastic member, and includes a first buffer portion and a second buffer portion, wherein the extension direction of the first buffer portion is parallel to the second portion In the extending direction, the second buffer portion extends from the first buffer portion and covers at least a part of the side wall. The backlight module according to claim 2, wherein the light-emitting module includes at least one light-emitting element and a light guide element, and the light-transmitting adhesive is connected to and covers a side surface of the light guide element. The backlight module according to claim 1, further comprising: At least one optical film disposed on the light-emitting surface of the light-transmitting frame; and A second buffer member is overlapped and arranged on the at least one optical film, wherein the second buffer member is a light-transmitting element, and the inside of the second buffer member includes a plurality of diffusion particles. A display device includes: A backlight module, including: A back plate having a bottom and a side wall surrounding the bottom; A light emitting module, which is disposed on the bottom of the back plate, and is suitable for providing an illuminating light beam; and A light-transmitting frame having a light-incident surface facing the light-emitting module, a light-guiding surface facing away from the light-emitting module, and a light-emitting surface on the top of the light-transmitting frame, the light-transmitting frame The body includes a first part and a second part, the first part is disposed between the side wall and the light emitting module, the light incident surface and the light guide surface are located in the first part, and the light exit surface Is located in the second part, and the second part extends in a direction away from the side wall, and the extension direction of the first part is perpendicular to the extension direction of the second part; and A display module is overlapped and arranged on the light-emitting surface of the light-transmitting frame. The display device according to claim 11, wherein the backlight module further includes a second buffer member, and the second buffer member is overlapped and disposed on the light-emitting surface of the light-transmitting frame, wherein the second The buffer is arranged between the transparent frame and the display module.

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