CN118016780A

CN118016780A - Display substrate and display device

Info

Publication number: CN118016780A
Application number: CN202410053446.4A
Authority: CN
Inventors: 刘虎; 谢俊烽
Original assignee: HKC Co Ltd; Changsha HKC Optoelectronics Co Ltd
Current assignee: HKC Co Ltd; Changsha HKC Optoelectronics Co Ltd
Priority date: 2024-01-12
Filing date: 2024-01-12
Publication date: 2024-05-10

Abstract

The application relates to a display substrate and a display device. The display substrate comprises a back plate and a lamp panel arranged on the back plate, wherein the lamp panel comprises a circuit board and a plurality of first lamp beads positioned on the light emitting side of the circuit board, the circuit board comprises a plurality of wiring areas and light transmitting areas positioned between at least partial adjacent wiring areas, the wiring areas are provided with metal wiring lines, the lamp panel also comprises a plurality of second lamp beads positioned on the backlight side of the circuit board, the first lamp beads and the second lamp beads are positioned in the wiring areas and are electrically connected with the metal wiring lines, and the light transmittance of the light transmitting areas is larger than that of the wiring areas; the display substrate further includes: the reflecting layer is positioned between the backboard and the circuit board, and light rays emitted by the second lamp beads are reflected to the light transmission area through the reflecting layer and emitted from the light emitting side. The second lamp beads emit light, and the light is reflected to the light transmission area through the reflecting layer, so that the light emitting uniformity of the display substrate is improved, and the display effect of the display substrate is further improved.

Description

Display substrate and display device

Technical Field

The present application relates to the field of display technologies, and in particular, to a display substrate and a display device.

Background

The display products of the microminiature light emitting device such as a Micro-LIGHT EMITTING Diode (Mini-Led) or a sub-millimeter light emitting Diode (Micro-LIGHT EMITTING Diode) have the advantages of high brightness, high contrast, high resolution and the like.

However, in the related art, a large amount of heat is released during the operation of the light emitting chips, so that a large space is reserved between the light emitting chips for heat dissipation, and the light emitting dark area exists in the microminiature light emitting device due to overlarge space between the light emitting chips, so that the display effect is affected; in addition, for display panel splicing, a splicing gap exists, and the brightness at the splicing gap is lower than that of other areas, so that the display effect is poor.

Disclosure of Invention

The application aims to provide a display substrate and a display device, which are used for solving the technical problem of uneven brightness of the display device in the related art.

In a first aspect, an embodiment of the present application provides a display substrate, including a back plate and a light panel disposed on the back plate, where the light panel includes a circuit board and a plurality of first light beads located on a light emitting side of the circuit board. The circuit board comprises a plurality of wiring areas and light-transmitting areas positioned between at least part of adjacent wiring areas, the wiring areas are provided with metal wires, the lamp board also comprises a plurality of second lamp beads positioned on the backlight side of the circuit board, the first lamp beads and the second lamp beads are positioned in the wiring areas and are electrically connected with the metal wires, and the light transmittance of the light-transmitting areas is larger than that of the wiring areas; the display substrate further includes: the reflecting layer is positioned between the backboard and the circuit board, and light rays emitted by the second lamp beads are reflected to the light transmission area through the reflecting layer and emitted from the light emitting side.

In one possible embodiment, the front projection of the reflective layer on the back plate covers at least the front projections of two adjacent second lamp beads on the back plate.

In one possible embodiment, the light-transmitting region is provided with a through-hole.

In one possible embodiment, the orthographic projection of the first light bead on the back plate overlaps the orthographic projection of the second light bead on the back plate.

In one possible embodiment, the projection of the light-transmitting region onto the back plate is any one of a circle, an ellipse, and a polygon.

In one possible embodiment, the light-transmitting region is located in an area between at least partially adjacent first beads on the circuit board.

In one possible implementation manner, the light-transmitting device further comprises a plurality of brackets, wherein the brackets are positioned between the reflecting layer and the circuit board, and the orthographic projection of the brackets on the circuit board and the light-transmitting area are not overlapped with each other.

In one possible embodiment, the light-transmitting region is located at an edge of the circuit board.

In one possible embodiment, the support comprises a plurality of supports, the plurality of supports are located between the backboard and the circuit board, and the orthographic projection of the supports on the backboard and the orthographic projection of the reflecting layer on the backboard are not overlapped.

In a second aspect, an embodiment of the present application further provides a display apparatus, including: the display substrate.

According to the display substrate and the display device provided by the embodiment of the application, the light transmitting area is arranged on the circuit board, the second lamp beads are arranged on the backlight side of the circuit board, and the reflecting layer is arranged between the back plate and the circuit board, so that light rays emitted by the second lamp beads are reflected to the light transmitting area and emitted from the light emitting side, the light emitting uniformity of the display of the lamp panel is improved, and the display effect is improved.

Drawings

Features, advantages, and technical effects of exemplary embodiments of the present application will be described below with reference to the accompanying drawings. In the drawings, like parts are designated with like reference numerals. The drawings are not drawn to scale, but are merely for illustrating relative positional relationships, and the layer thicknesses of certain portions are exaggerated in order to facilitate understanding, and the layer thicknesses in the drawings do not represent the actual layer thickness relationships.

Fig. 1 is a schematic structural diagram of a display substrate according to a first embodiment of the present application;

Fig. 2 is a top view of a lamp panel in a display substrate according to a first embodiment of the application;

Fig. 3 is a bottom view of a lamp panel in a display substrate according to a first embodiment of the application;

fig. 4 is a schematic structural diagram of another display substrate according to a first embodiment of the present application;

fig. 5 is a schematic structural diagram of a display substrate according to a second embodiment of the present application;

fig. 6 is a top view of a lamp panel in a display substrate according to a second embodiment of the application;

fig. 7 is a bottom view of a lamp panel in a display substrate according to a second embodiment of the application;

fig. 8 is a schematic structural diagram of another display substrate according to the second embodiment of the present application;

fig. 9 is a schematic structural diagram of a display device according to a third embodiment of the present application;

fig. 10 is a schematic structural diagram of another display device according to the third embodiment of the present application.

Reference numerals illustrate:

100. A display device;

10. a display substrate;

1. a back plate;

2. A lamp panel; 21. a circuit board; 211. a light transmission region; 212. a wiring region; 22. a first light bead; 23. a second light bead;

3. A reflective layer;

4. A bracket;

5. a transparent cover plate;

6. A liquid crystal display panel.

Detailed Description

Features and exemplary embodiments of various aspects of the application are described in detail below. In the following detailed description, numerous specific details are set forth in order to provide a thorough understanding of the application. It will be apparent, however, to one skilled in the art that the present application may be practiced without some of these specific details. The following description of the embodiments is merely intended to provide a better understanding of the application by showing examples of the application. In the drawings and the following description, at least some well-known structures and techniques have not been shown in detail in order not to unnecessarily obscure the present application; also, the size of the region structures may be exaggerated for clarity. Furthermore, the described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.

The display substrate 10 in the display device 100 generally includes a back plate 1 and a lamp panel 2, the lamp panel 2 is disposed above the back plate 1, the lamp panel 2 includes a circuit board 21 and lamp beads electrically connected to the circuit board 21.

However, in the related art, because a large amount of heat is generated during the operation of the lamp beads, a larger distance between the lamp beads is generally provided to ensure the heat diffusion, but the larger distance between the lamp beads causes a dark area of light emission on the light emitting side of the display substrate 10, so as to reduce the display effect; in the display screens spliced with each other, dark lines are generated at the splicing positions due to the lack of the lamp beads, so that the luminous color tone of the splicing positions is inconsistent with the normal luminous area, and the light emitting quality of the display is affected.

In view of the above, the embodiment of the application provides a display substrate 10 and a display device 100 including the display substrate 10, wherein the display substrate 10 has the reflective layer 3 on the back plate 1, the light-transmitting region 211 on the circuit board 21, and the second lamp beads 23 on the backlight side of the circuit board 21, so that the second lamp beads 23 emit light to reflect the light to the light-transmitting region 211 through the reflective layer 3, thereby improving the uniformity of the light output on the light-emitting side, and further improving the display effect.

The display substrate 10 and the specific structure including the display substrate 10 according to the embodiments of the present application are described below with reference to the accompanying drawings.

First embodiment

Fig. 1 is a schematic structural diagram of a display substrate 10 according to an embodiment of the application.

As shown in fig. 1, a first embodiment of the present application provides a display substrate 10, which includes a back plate 1 and a lamp panel 2 disposed on the back plate 1, wherein the lamp panel 2 includes a circuit board 21 and a plurality of first lamp beads 22 disposed on a light emitting side of the circuit board 21.

The material of the back plate 1 may be any metal material, such as an aluminum plate, an aluminum alloy plate, or galvanized steel, and is manufactured by a stamping process. The metal material has better ductility, and can protect the display substrate 10 from being broken easily under the impact of external force. The back plate 1 may also be made of plastic material, such as polyimide, polycarbonate, polyethersulfone, polyethylene terephthalate, polyethylene, etc., so as to reduce the weight of the backlight module and the cost of the display substrate 10. The shape of the back plate 1 may vary from embodiment to embodiment.

The circuit board 21 includes a plurality of wiring regions 212 and a light-transmitting region 211 located between at least part of the adjacent wiring regions 212, the wiring regions 212 are provided with metal wirings, the lamp panel 2 further includes a plurality of second lamp beads 23 located on the backlight side of the circuit board 21, the first lamp beads 22 and the second lamp beads 23 are located in the wiring regions 212 and electrically connected with the metal wirings, and the light transmittance of the light-transmitting region 211 is greater than the light transmittance of the wiring regions 212.

The first lamp beads 22 have light-emitting dark areas with poor brightness in gaps, and the light-transmitting areas 211 are arranged at positions corresponding to the light-emitting dark areas of the circuit board 21, specifically, the positions of the light-emitting dark areas, namely the positions of the light-transmitting areas 211, can be obtained through simulation, real object lighting surface cloud image scanning, experimental cross verification and other modes.

The first and second beads 22 and 23 may be Light-Emitting diodes (LEDs) of conventional sizes, or may be any one of Micro-LEDs or sub-millimeter LEDs (Mini-LEDs). Micro-LEDs refer to LED chips with grain sizes below 100 microns, mini-LEDs refer to LED chips with grain sizes of about 100-300 microns. The LED, mini-LED or Micro-LED can be used as a self-luminous element for display, and has the advantages of low power consumption, high brightness, high resolution, high color saturation, high reaction speed, long service life, high efficiency and the like.

The first and second beads 22 and 23 are each for emitting white light. Alternatively, the circuit board 21 is a flexible circuit board 21.

As an alternative embodiment, the display substrate 10 may be an LED display panel.

Optionally, the first and second beads 22 and 23 are Micro-LEDs or Mini-LEDs. The first beads 22 may include red, green, and blue light emitting elements, or may further include light emitting elements of other colors, and the plurality of first beads 22 are transferred onto the circuit board 21 by a batch transfer technique to form a light emitting layer. The circuit board 21 may be made of a light-transmitting material such as glass, polyimide (PI), or the like.

The LED lamp bead comprises a light-emitting chip and an outer surface packaging layer, wherein the outer surface packaging layer is made of acrylic material, and has the advantages of higher transparency, chemical stability, mechanical property, weather resistance, easiness in color transmission, easiness in processing, attractive appearance and the like, so that the LED backlight display module has high brightness, and the display module improves the definition of an image and the color rendering of the image when displaying the image.

As an alternative embodiment, the display substrate 10 is an Organic LIGHT EMITTING Diode (OLED) display panel.

Optionally, the first lamp bead 22 includes a first electrode, a second electrode, and a light emitting structure between the first electrode and the second electrode, which are disposed on the circuit board 21. Either one of the first electrode and the second electrode is an anode, and the other is a cathode.

The light emitting structure may further include at least one of a hole injection layer (Hole Inject Layer, HIL), a hole transport layer (Hole Transport Layer, HTL), an electron injection layer (Electron Inject Layer, EIL), or an electron transport layer (Electron Transport Layer, ETL). The first beads 22 may include red, green, and blue light emitting elements, or may also include light emitting elements of other colors. The circuit board 21 may be made of a light-transmitting material such as glass, polyimide (PI), or the like.

The display substrate 10 further includes: the reflecting layer 3, the reflecting layer 3 is located between the back plate 1 and the circuit board 21, the light emitted by the second lamp beads 23 is reflected to the light transmitting area 211 by the reflecting layer 3, and is emitted from the light emitting side.

The reflective layer 3 may be made of a plastic material. For example, polyethylene terephthalate (PET), polycarbonate (PC), polystyrene (PS), and the like. The reflective layer 3 may also comprise a highly reflective coating, such as titanium dioxide TiO ₂, applied to the plastic material to increase the light reflectance.

Because the first beads 22 have an excessively large pitch, the light-emitting side of the lamp panel 2 has poor light uniformity, and the splicing position of the tiled display device 100 generally has problems of warpage, unevenness, breakage, light interception, black edge cutting and the like, which results in that two display substrates 10 spliced with each other generate a slit dark line at the splicing position, so that the light-emitting is nonuniform, and the display effect is affected. In order to solve the problem that the light emitting side of the lamp panel 2 shows poor light uniformity, a light transmitting region 211 is provided at a place where the brightness of the display substrate 10 is poor, alternatively, the second lamp beads 23 may have a size between 1 μm and 200 μm, that is, the second lamp beads 23 may be any one of Micro-LEDs having a size between 1 μm and 50 μm, mini-LEDs having a size between 50 μm and 200 μm, or LEDs having a size greater than 200 μm, and the second lamp beads 23 emit light to be reflected to the light transmitting region 211 of the circuit board 21 by the reflective layer 3 and emit light from the light emitting side, thereby improving the brightness of the light transmitting region 211 and further improving the light emitting uniformity of the first lamp panel 2. Further, by adjusting the light emitting intensity of the second lamp beads 23, the light emitting color tone of the light transmitting area 211 is consistent with the light emitting color tone of other positions of the circuit board 21, so as to further improve the light emitting quality of the display substrate 10.

According to the display substrate 10 provided by the embodiment of the application, the light transmitting area 211 is arranged on the circuit board 21, the second lamp beads 23 are arranged on the backlight side of the circuit board 21, and the reflecting layer 3 is arranged between the back plate 1 and the circuit board 21, so that the light emitted by the second lamp beads 23 is reflected to the light transmitting area 211 and emitted from the light emitting side, the light emitting uniformity of the display of the lamp panel 2 is improved, and the display effect is improved.

Fig. 2 is a top view of a lamp panel 2 in a display substrate 10 according to a first embodiment of the present application; fig. 3 is a bottom view of a lamp panel 2 in a display substrate 10 according to an embodiment of the application.

As shown in fig. 2 and 3, the first beads 22 are distributed on the light emitting side of the circuit board 21, the light transmitting areas 211 are distributed in the gaps of the first beads 22, and the second beads 23 are distributed on the backlight side of the circuit board 21. The light-transmitting region 211 is located in an area between at least partially adjacent first beads 22 on the circuit board 21.

In some embodiments, the orthographic projection of the reflective layer 3 on the back plate 1 covers at least the orthographic projections of two adjacent second beads 23 on the back plate 1.

Specifically, in this embodiment, as shown in fig. 1, the reflective layer 3 is located on the back plate 1, and the orthographic projection of the reflective layer 3 on the back plate 1 covers the orthographic projection of all the second lamp beads 23 on the back plate 1, so that it can be ensured that the light emitted by all the second lamp beads 23 can be reflected by the reflective layer 3.

In some embodiments, the light-transmitting region 211 is provided with a through hole to increase light transmittance and reduce manufacturing cost.

Specifically, the light-transmitting region 211 is a light-permeable region, and may be not provided with a through hole, which is not particularly limited in the present application.

In other embodiments, the light-transmitting region 211 is filled with resin or other material to form a lens, and the light emitted by the second lamp bead 23 is processed to make the light emitted by the second lamp bead 23 perpendicular to the back plate 1, so as to avoid the light emitted by the second lamp bead 23 interfering with the light emitted by the first lamp bead 22. Specifically, as shown in fig. 4, fig. 4 is a schematic structural diagram of another display substrate according to the first embodiment of the present application.

The light emitted by the second lamp beads 23 is reflected to the light-transmitting region 211 by the reflecting layer 3, and the light is emitted from the light-emitting side of the circuit board 21.

In this embodiment, the second lamp beads 23 emit light, the light is reflected by the reflective layer 3 to the four light-transmitting areas 211 nearest to the second lamp beads 23, the light passes through the light-transmitting areas 211 and is emitted, the brightness of the light-emitting dark area in the light-emitting side of the circuit board 21 is improved, and the light-emitting uniformity of the display substrate 10 is improved.

The circuit board 21 is provided with a control chip (not shown) for supplying power to the first lamp beads 22 and the second lamp beads 23 and controlling the first lamp beads 22 and the second lamp beads 23 to be turned on and off.

When the display substrate 10 is an OLED display panel or an LED display panel, the wiring region 212 is a thin film transistor (Thin Film Transistor, TFT) array layer, and is formed on the lamp panel 2 using a Low Temperature Polysilicon (LTPS) technique or an indium gallium zinc oxide (Indium Gallium Zinc Oxide, IGZO) technique.

The positive and negative electrodes of the first lamp beads 22 on each display substrate 10 are respectively connected with the metal wires of the wiring area 212, wherein the metal wires form a driving circuit, and the driving circuit can control the on/off and brightness of the first lamp beads 22 by controlling the current, so that the purpose of display is achieved. The positive and negative electrodes of the second lamp beads 23 are respectively connected with a driving circuit of the wiring area 212, and the driving circuit can control the on/off and brightness of the second lamp beads 23 through controlling current, so that the purpose of light supplementing display is achieved.

When the display substrate 10 is a backlight module, the first beads 22, which emit white light, are disposed on the circuit board 21 or the flexible circuit board 21. The positive and negative electrodes of the first lamp beads 22 on each display substrate 10 are respectively connected with the metal wires of the wiring area 212, the metal wires form a driving circuit, and the driving circuit can control the on/off and brightness of the first lamp beads 22 by controlling current; the positive and negative electrodes of the second beads 23 are respectively connected with metal wirings of the wiring region 212, and the metal wirings form a driving circuit which can control the on/off and brightness of the second beads 23 by controlling the current, thereby providing a backlight source for the LCD display panel.

In some embodiments, the orthographic projection of the first light bead 22 onto the back plate 1 overlaps the orthographic projection of the second light bead 23 onto the back plate 1.

It will be appreciated that the second beads 23 may also be disposed below the side of the first beads 22, i.e. the front projection of the first beads 22 onto the back plate 1 does not overlap or does not overlap at all with the front projection of the second beads 23 onto the back plate 1. The relative positions of the first lamp beads 22 and the second lamp beads 23 are not particularly limited, and the light emitted by the second lamp beads 23 can be reflected to the light-transmitting region 211 through the reflecting layer 3.

The number of the second beads 23 is not particularly limited in the present embodiment, and the number of the second beads 23 in the third embodiment is only illustrated as an example, and the number of the second beads 23 can be reduced to reduce the cost.

In some embodiments, the projection of the light-transmissive region 211 onto the backplate 1 is any one of a circle, an ellipse, and a polygon. In the present embodiment, the shape of the light-transmitting region 211 shown in fig. 2 and 3 is only an exemplary illustration. The shape of the specific light-transmitting region 211 can be obtained by means of simulation, real object lighting surface scanning cloud image, experimental cross verification and the like, so that the specific shape of the light-transmitting region 211 is obtained.

In some embodiments, a plurality of brackets 4 are also included, the plurality of brackets 4 being located between the back plate 1 and the circuit board 21.

Specifically, in this embodiment, the support 4 is located between the reflective layer 3 and the circuit board 21, and the orthographic projection of the support 4 on the circuit board 21 and the light-transmitting region 211 do not overlap each other. The upper portion of the bracket 4 abuts against the circuit board 21 for supporting the lamp panel 2, and the bracket 4 has a buffering effect on the display substrate 10. It will be appreciated that the present application is not limited to the number and shape of the brackets 4, and that the number and shape of the brackets 4 in fig. 1 is merely illustrative.

In some embodiments, the front projection of the support 4 on the back plate 1 and the front projection of the light-transmitting region 211 on the back plate 1 do not overlap, so as to ensure that the light emitted by the second lamp bead 23 is reflected to the light-transmitting region 211 and is not affected in propagation.

In the present embodiment, the direct type display substrate 10 is only illustrated in the drawings, and the present application is applicable to direct type and side-in type display substrates 10, and the first lamp beads 22 and the second lamp beads 23 can be subjected to zone dimming to enhance the display effect.

In this embodiment, by arranging the light-transmitting region 211 in the light-emitting dark region of the display substrate 10 and arranging the plurality of second lamp beads 23 on the backlight side of the circuit board 21, the light emitted by the second lamp beads 23 is reflected to the light-transmitting region 211 through the reflecting layer 3 and emitted from the light-emitting side, so that the brightness of the light-emitting dark region is increased, the light-emitting uniformity is improved, and the display effect of the display substrate 10 is further improved.

Second embodiment

Fig. 5 is a schematic structural diagram of a display substrate 10 according to a second embodiment of the present application.

As shown in fig. 5, a display substrate 10 is provided in a second embodiment of the present application; the structure of the display substrate 10 is similar to that of the first embodiment and fig. 1, except that at least two display substrates 10 are spliced with each other, a splice gap exists between two adjacent display substrates 10, a light-transmitting region 211 is located at the edge of the circuit board 21, and second lamp beads 23 are arranged along two sides of the splice gap.

Specifically, as shown in fig. 6 and fig. 7, fig. 6 shows a top view of a lamp panel 2 in a display substrate 10 according to a second embodiment of the present application; fig. 7 is a bottom view of a lamp panel 2 in a display substrate 10 according to a second embodiment of the application. In the splicing technique, two display substrates 10 spliced with each other have a splice gap, and the splice gap has a dark brightness, so that a light-transmitting region 211 is provided along the splice gap, that is, the light-transmitting region 211 is provided at the edge of the circuit board 21. The second lamp pearl 23 is located the both sides of light transmission district 211, and reflector layer 3 sets up on backplate 1 along the light transmission district 211 direction, and the orthographic projection of reflector layer 3 on backplate 1 covers the orthographic projection of second lamp pearl 23 on backplate 1 to guarantee that the light of second lamp pearl 23 transmission can take place the reflection in reflector layer 3 department, and need not to set up reflector layer 3 in the position that need not the second lamp pearl 23 reflection light, reduce manufacturing cost.

Since the second lamp beads 23 are located at two sides of the light-transmitting region 211 in the embodiment, in order to ensure that the light emitted by the second lamp beads 23 is totally reflected to the light-transmitting region 211, the reflective layer 3 can be formed by splicing two reflective sheets along the direction of the splicing gap of the display substrate 10, and the two reflective sheets are respectively in a preset included angle with the bottom plate, so that the light emitted by the second lamp beads 23 is totally reflected to the light-transmitting region 211, waste of light sources is avoided, and the light-emitting efficiency of the second lamp beads 23 is improved.

The reflective layer 3 is made of a light-impermeable material, alternatively, the reflective layer 3 may be a sheet-like member, and the material may be a plastic material having a high reflectivity, such as polyethylene terephthalate (PET), polycarbonate (PC), and Polystyrene (PS).

The second lamp beads 23 on the left side and the right side of the light-transmitting area 211 emit light to the reflecting layer 3, and the reflecting layer 3 reflects the light to the light-transmitting area 211, so that the light is emitted from the light-emitting side of the backboard 1, the brightness of a splicing gap corresponding to the light-transmitting area 211 is improved, the light-emitting uniformity of the whole display substrate 10 is improved, and the display effect of the display substrate 10 is enhanced.

The light-transmitting region 211 is a light-permeable region, in this embodiment, the region where the splice seam is located may be a through hole distributed along the splice seam, and the projection of the light-transmitting region 211 on the back plate 1 is any one of a circle, an ellipse and a polygon, and the fifth and sixth diagrams are only illustrative, and the shape and the number of the light-transmitting regions 211 are not specifically limited.

Fig. 8 is a schematic structural diagram of another display substrate according to the second embodiment of the present application; as shown in fig. 8, the light-transmitting region 211 is filled with resin or other materials to form a lens, and the light emitted by the second lamp beads 23 is processed to make the light emitted by the second lamp beads 23 perpendicular to the back plate 1, so as to avoid the light emitted by the second lamp beads 23 interfering with the light emitted by the first lamp beads 22.

As in the first embodiment, the circuit board 21 is also formed with a wiring region 212, the wiring region 212 is provided with metal wirings, and the first lamp beads 22 and the second lamp beads 23 are located in the wiring region 212 and electrically connected with the metal wirings. The light-transmitting region 211 is not provided with a wiring, so that the light transmittance of the light-transmitting region 211 is ensured.

In this embodiment, the optical module further includes a plurality of brackets 4, where the plurality of brackets 4 are located between the back plate 1 and the circuit board 21, and the front projection of the brackets 4 on the back plate 1 and the front projection of the reflective layer 3 on the back plate 1 do not overlap each other. The upper part of the bracket 4 abuts against the circuit board 21 for supporting the circuit board 21 and also has a buffering effect on the display substrate 10. And the orthographic projection of the bracket 4 on the backboard 1 is not overlapped with the orthographic projection of the light-transmitting area 211 on the backboard 1, so that the light reflected by the reflecting layer 3 of the second lamp bead 23 is emitted to the light-transmitting area 211, and the propagation of the light is not influenced.

In this embodiment, the light-transmitting area 211 is disposed in the light-emitting dark area corresponding to the splice gap, and the second lamp beads 23 are disposed on the backlight side of the circuit board 21 along the extending direction of the light-transmitting area 211, the second lamp beads 23 are located at two sides of the light-transmitting area 211, the second lamp beads 23 emit light to the reflective layer 3, the reflective layer 3 reflects light to the light-transmitting area 211, so as to improve the brightness of the splice gap corresponding to the light-transmitting area 211, and increase the uniformity of the light emitted from the display substrate 10, thereby improving the display effect of the display substrate 10.

Third embodiment

Fig. 9 shows a schematic structural diagram of a display device 100 according to a third embodiment of the present application, and as shown in fig. 9, the display device 100 includes the display substrate 10 described above.

In some embodiments, the transparent cover plate 5 is further included, and the material adopted by the transparent cover plate 5 is an acrylic material, which has the advantages of higher transparency, chemical stability, mechanical property, weather resistance, easy color transmission, easy processing, attractive appearance and the like. The present embodiment will be described only with reference to the display substrate of the second embodiment as an example of a display device.

In other embodiments, the display device 100 includes a backlight module and a liquid crystal display panel 6, and the backlight module includes the display substrate 10. The Liquid crystal display panel 6 (LCD) is disposed on the light emitting side of the display substrate 10, and the backlight module is used for providing a light source for the LCD display panel. As shown in fig. 10, fig. 10 is a schematic structural diagram of another display device according to the third embodiment of the present application. Since the LCD display panel itself does not emit light, the display substrate 10 can provide a light source with a sufficient brightness distribution so that it can display images normally.

It can be appreciated that the technical solution of the backlight module provided by the embodiments of the present application can be widely used for providing light sources for various liquid crystal display panels, such as TN (TWISTED NEMATIC ) display panels, IPS (In-PLANE SWITCHING ) display panels, VA (VERTICAL ALIGNMENT, vertically aligned) display panels, MVA (Multi-Domain VERTICAL ALIGNMENT, multi-Domain vertically aligned) display panels.

It should be readily understood that the terms "on … …", "above … …" and "above … …" in this disclosure should be interpreted in the broadest sense so that "on … …" means not only "directly on something" but also includes "on something" with intermediate features or layers therebetween, and "above … …" or "above … …" includes not only the meaning "on something" or "above" but also the meaning "above something" or "above" without intermediate features or layers therebetween (i.e., directly on something).

The term "layer" as used herein may refer to a portion of material that includes regions having a certain thickness. The layer may extend over the entire underlying or overlying structure, or may have a range that is less than the range of the underlying or overlying structure. Further, the layer may be a region of a continuous structure, either homogenous or non-homogenous, having a thickness less than the thickness of the continuous structure. For example, the layer may be located between the top and bottom surfaces of the continuous structure or between any pair of lateral planes at the top and bottom surfaces. The layers may extend laterally, vertically and/or along a tapered surface. The substrate base may be a layer, may include one or more layers therein, and/or may have one or more layers located thereon, and/or thereunder. The layer may comprise a plurality of layers. For example, the interconnect layer may include one or more conductors and contact layers (within which contacts, interconnect lines, and/or vias are formed) and one or more dielectric layers.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present application, and not for limiting the same; although the application has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the application.

Claims

1. A display substrate comprises a back plate and a lamp plate arranged on the back plate, wherein the lamp plate comprises a circuit board and a plurality of first lamp beads positioned on the light emitting side of the circuit board,

The circuit board comprises a plurality of wiring areas and light-transmitting areas positioned between at least partial adjacent wiring areas, the wiring areas are provided with metal wires, the lamp panel also comprises a plurality of second lamp beads positioned on the backlight side of the circuit board, the first lamp beads and the second lamp beads are positioned in the wiring areas and are electrically connected with the metal wires, and the light transmittance of the light-transmitting areas is larger than that of the wiring areas;

The display substrate further includes:

The reflecting layer is positioned between the back plate and the circuit board, and the light rays emitted by the second lamp beads are reflected to the light transmission area through the reflecting layer and emitted from the light emitting side.

2. The display substrate of claim 1, wherein the orthographic projection of the reflective layer on the back plate covers at least the orthographic projections of two adjacent second beads on the back plate.

3. The display substrate according to claim 1, wherein the light-transmitting region is provided with a through hole.

4. The display substrate of claim 1, wherein an orthographic projection of the first beads on the back plate overlaps an orthographic projection of the second beads on the back plate.

5. The display substrate of claim 1, wherein the projection of the light transmissive region onto the back plate is any one of a circle, an ellipse, and a polygon.

6. The display substrate of claim 1, wherein the light transmissive region is located in an area of the circuit board between at least some adjacent ones of the first beads.

7. The display substrate of claim 6, further comprising a plurality of standoffs positioned between the reflective layer and the circuit board, and wherein orthographic projections of the standoffs on the circuit board do not overlap the light transmissive region.

8. The display substrate of claim 1, wherein the light transmissive region is located at an edge of the circuit board.

9. The display substrate of claim 8, further comprising a plurality of standoffs located between the back plane and the circuit board, the orthographic projections of the standoffs on the back plane and the orthographic projections of the reflective layer on the back plane not overlapping each other.

10. A display device, comprising: the display substrate according to any one of claims 1 to 9.