Luminous substrate, light bar molding method and display device

Abstract

The present invention belongs to the field of display devices, and discloses a light-emitting substrate, a light bar molding method, and a display device. The light-emitting substrate includes a glass substrate, a first metal layer, and a second metal layer; the first metal layer is arranged on the glass substrate, a first electrode line and a second electrode line are formed on the first metal layer, a plurality of light-emitting devices are arranged in series on the first electrode line, and the first electrode line and the second electrode line are used to connect to different electrodes on a power supply; the second metal layer is arranged on the glass substrate, a plurality of conduction lines are formed on the second metal layer, and a plurality of the conduction lines are arranged at intervals along the length direction of the glass substrate, and each of the conduction lines is electrically connected to the first electrode line and the second electrode line at the same time. In the present invention, the glass substrate is cut to form light bars of different lengths, and different conduction lines can also be connected to change the number of light-emitting devices connected to the circuit.

Description

Technical Field

[0001] The present invention relates to the technical field of display devices, and in particular to a light-emitting substrate, a light bar molding method and a display device. Background Art

[0002] Currently, in the production and manufacturing process of liquid crystal displays, many large glass panels will have glass left over after being cut, which will result in a considerable amount of waste, increase production costs, and reduce manufacturing efficiency.

[0003] In the related art, light bar circuits are prepared on glass plates so that scraps of glass substrates can be utilized to improve the utilization rate of glass substrates. However, in the process of producing light bar products, the cost of the light mask used is very high. If the specifications of the scraps are different, the light mask needs to be modified to ensure that it can adapt to the length of the light bar to be produced. The cost of modifying the light mask is huge, resulting in the light bar being able to only be produced using glass materials of specific specifications, and the switching of specifications of glass-based light bar is very inflexible. Summary of the invention

[0004] The main purpose of the present invention is to provide a light-emitting substrate, a light bar molding method and a display device, aiming to solve the problem that the specifications of glass-based light bars are very inflexible to switch.

[0005] To achieve the above object, the present invention provides a light-emitting substrate, comprising:

[0006] Glass substrate;

[0007] A first metal layer is provided on the glass substrate, a first electrode line and a second electrode line are formed on the first metal layer, a plurality of light-emitting devices are arranged in series on the first electrode line, and the first electrode line and the second electrode line are used to connect to different electrodes on a power source; and

[0008] The second metal layer is disposed on the glass substrate. A plurality of conducting lines are formed on the second metal layer. The plurality of conducting lines are spaced apart along the length direction of the glass substrate. Each of the conducting lines is electrically connected to the first electrode line and the second electrode line at the same time.

[0009] Optionally, a plurality of first electrode lines are provided, and one ends of the plurality of first electrode lines are connected to each other;

[0010] Each of the conducting lines is electrically connected to a plurality of the first electrode lines at the same time.

[0011] Optionally, one ends of a plurality of the first electrode lines are connected to each other to form an electrical connection portion;

[0012] On a side of the same conducting line facing the electrical connection portion, a plurality of the light emitting devices are disposed on each of the first electrode lines.

[0013] Optionally, on a side of the same conducting wire facing the electrical connection portion, the number of the light-emitting devices on each of the first electrode lines is the same; and / or,

[0014] Between two adjacent conducting lines, the number of the light emitting devices on each of the first electrode lines is the same.

[0015] Optionally, all the light-emitting devices on the first metal layer are arranged in parallel.

[0016] Optionally, the metal activity of the metal material in the first metal layer is lower than that in the second metal layer.

[0017] Optionally, the material of the first metal layer includes Cu or Ag; and / or,

[0018] The material of the second metal layer includes Al.

[0019] Optionally, the light emitting device includes a plurality of lamp beads arranged in series.

[0020] Optionally, an insulating layer is further disposed between the first metal layer and the second metal layer.

[0021] Optionally, the material of the insulating layer includes SiNx.

[0022] The present invention also provides a display device, comprising a light-emitting substrate according to any one of the above;

[0023] Wherein, one of the conducting lines is selected to be turned on, and the remaining conducting lines are disconnected, so as to select the number of light-emitting devices electrically connected to the second electrode line.

[0024] The present invention also provides a method for forming a light-emitting substrate, which is used to produce any of the light-emitting substrates described above, comprising the following steps:

[0025] providing a cleaned glass substrate;

[0026] exposing and developing on the glass substrate to form the first metal layer, wherein the first metal layer includes first electrode lines and second electrode lines;

[0027] The second metal layer is formed on the glass substrate by exposure and development, wherein the second metal layer includes a plurality of conductive lines spaced apart along a length direction of the glass substrate.

[0028] Optionally, after the glass substrate is exposed and developed to form the second metal layer, the method further includes:

[0029] The glass substrate is cut along a length direction of the glass substrate according to a preset length.

[0030] The present invention also provides a method for forming a light bar for producing the display device described above, comprising the following steps:

[0031] Providing a light-emitting substrate, wherein the light-emitting substrate is a light-emitting substrate according to any one of the above;

[0032] Select the remaining conductive wires, immerse the remaining conductive wires in the corrosive liquid in turn, and wet-etch to disconnect the remaining conductive wires, so as to form a series conductive loop between the first electrode wire and the second electrode wire;

[0033] The light emitting device is bonded on the first electrode line to form a light bar.

[0034] In the light-emitting substrate provided by the present invention, two metal layers are formed on the glass substrate, including a first metal layer for generating the first electrode line and the second electrode line, which are connected to the two poles of the power supply to form a positive and negative electrode structure respectively; a conductive line electrically connecting the first electrode line and the second electrode is formed on the second metal layer, so that a complete electrical circuit is formed between the first electrode line, the second electrode line and the conductive line, so as to facilitate the normal light emission of the light-emitting device therein; during the production process, glass substrates of the same length can be uniformly produced, and then the glass substrates are subsequently cut to form glass substrates of different lengths, and the first electrode line and the second electrode line on each of the glass substrates can be electrically connected through different conductive lines to form a complete electrical circuit, so that the production is flexible and there is no need to change the production mask. At the same time, on the glass substrate, the number of light-emitting devices connected to the circuit can be changed by connecting different conductive lines, so as to realize flexible switching of the light bar specifications. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 It is a structural schematic diagram of an embodiment of a light-emitting substrate provided by the present invention;

[0036] Figure 2 yes Figure 1 A schematic structural diagram of another embodiment of the light-emitting substrate;

[0037] Figure 3 yes Figure 2 A schematic diagram of a structure in which a conducting line is retained;

[0038] Figure 4 yes Figure 1 Schematic diagram of the structure of the light-emitting device

[0039] Figure 5 is a schematic structural diagram of a display device provided by the present invention;

[0040] Figure 6It is a flowchart of the light bar molding method provided by the present invention.

[0041] Description of Figure Numbers:

[0042] Label name Label name 100 Luminous substrate 31 Conductive wire 1 Glass substrate 4 Light-emitting devices 21 First electrode line 41 Lamp beads 22 Second electrode line

[0043] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0044] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0045] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0046] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the meaning of "and / or" appearing in the full text includes three parallel schemes. Taking "A and / or B" as an example, it includes scheme A, or scheme B, or a scheme that satisfies both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in the field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0047] See also Figure 1The present invention provides a light-emitting substrate 100, comprising a glass substrate 1, a first metal layer and a second metal layer; the first metal layer is arranged on the glass substrate 1, a first electrode line 21 and a second electrode line 22 are formed on the first metal layer, a plurality of light-emitting devices 4 are arranged in series on the first electrode line 21, and the first electrode line 21 and the second electrode line 22 are used to connect to different electrodes on a power supply; the second metal layer is arranged on the glass substrate 1, a plurality of conducting lines 31 are formed on the second metal layer, the plurality of conducting lines 31 are arranged at intervals along the length direction of the glass substrate 1, and each of the conducting lines 31 is electrically connected to the first electrode line 21 and the second electrode line 22 at the same time.

[0048] In the light-emitting substrate 100 provided by the present invention, two metal layers are formed on the glass substrate 1, including a first metal layer for generating the first electrode line 21 and the second electrode line 22, which are connected to the two poles of the power supply to form a positive and negative electrode structure respectively; a conducting line 31 electrically connecting the first electrode line 21 and the second electrode line 22 is formed on the second metal layer, so that a complete electrical circuit is formed between the first electrode line 21, the second electrode line 22 and the conducting line 31, so as to facilitate the normal light emission of the light-emitting device therein; in the production process, glass substrates of the same length can be uniformly produced, and then the glass substrates are subsequently cut to form glass substrates of different lengths, and the first electrode line 21 and the second electrode line 22 on each of the glass substrates can be electrically connected through different conducting lines 31 to form a complete electrical circuit, so that the production is flexible and there is no need to change the production mask. At the same time, on the glass substrate 1, the number of light-emitting devices connected to the circuit can be changed by connecting different conducting lines 31, so as to realize flexible switching of the specifications of the light strip.

[0049] For further information, see Figures 2 to 3 , a plurality of first electrode lines 21 are provided, and one end of the plurality of first electrode lines 21 is connected to each other; each of the conductive lines 31 is electrically connected to the plurality of first electrode lines 21 at the same time. In this embodiment, in order to ensure the light-emitting effect, a plurality of first electrode lines 21 are provided, and each of the electrode lines is provided with the light-emitting device 4, so that there are more light sources, and the plurality of first electrode lines 21 form a parallel structure through the conductive lines 31 to ensure that the voltage on each of the first electrode lines 21 is equal.

[0050] Furthermore, one ends of the plurality of first electrode wires 21 are connected to each other to form an electrical connection portion; and on the side of the same conductive wire 31 facing the electrical connection portion, a plurality of the light-emitting devices 4 are provided on each of the first electrode wires 21. In the present embodiment, a complete electrical circuit is formed between the conductive wire 31, the second electrode wire and the electrical connection portion, and therefore, the same electrical circuit is formed on the plurality of first electrode wires 21. In order to ensure that there is no short circuit problem when the conductive wire 31 is turned on, the portion of the first electrode wire 21 between the conductive wire 31 and the electrical connection portion needs to be provided with a light-emitting device 4 so as to form a parallel structure. When one of the conductive wires 31 is turned on, each of the motor wires 21 has a light-emitting element.

[0051] Specifically, on the side of the same conductive line 31 facing the electrical connection portion, the number of the light emitting devices 4 on each of the first electrode lines 21 is the same. In this embodiment, on different first electrode lines 21, the number of the light emitting devices 4 between the conductive line 31 and the electrical connection portion is the same to ensure the same light emitting quality and light emitting effect when conducting.

[0052] Similarly, between two adjacent conductive lines 31, the number of the light-emitting devices 4 on each of the first electrode lines 21 is the same. In this embodiment, after any part of the first electrode lines 21 is electrically connected to the second electrode lines 22 through the conductive lines 31, the number of light-emitting elements, that is, the number of light-emitting devices 4, is the same, thereby ensuring the light-emitting effect and light-emitting quality.

[0053] On the other hand, in this embodiment, all the light emitting devices 4 on the first metal layer are arranged in parallel to ensure that the light emitting devices 4 emit light uniformly and are within the same straight line to ensure the light emitting effect.

[0054] It should be noted that, during the subsequent use of the second metal layer, some of the conducting lines 31 need to be disconnected, and there are many ways to do so, such as mechanical disconnection or etching disconnection.

[0055] In this embodiment, when the etching is used, the metal active property of the metal material in the first metal layer is less than that of the second metal layer, so that the entire glass substrate 1 is directly placed in the corrosive liquid, and only the second metal layer is corroded without affecting the first metal layer.

[0056] Specifically, the material of the first metal layer includes Cu or Ag, which has good electrical conductivity and stable metal properties.

[0057] In addition, the material of the second metal layer includes Al, which has good electrical conductivity and can react with the corrosive solution to break.

[0058] It should be noted that, in this embodiment, the two relevant technical features of the above-mentioned material setting can exist alone or at the same time, and no specific limitation is made here.

[0059] On the other hand, see Figure 4 The light emitting device 4 includes a plurality of lamp beads 41 arranged in series to ensure the light emitting effect of each light emitting device 4.

[0060] On the other hand, an insulating layer is also provided between the first metal layer and the second metal layer, so as to achieve mutual insulation and crossing of the lines, realize simpler and wider routing, and make the layout setting more diverse.

[0061] Specifically, the material of the insulating layer includes SiNx.

[0062] It should be noted that the insulating layer may be made of SiNx or the like, with a typical thickness of 0.1 μm and a range of 0.02 to 2 μm.

[0063] In the embodiment provided by the present invention, the light-emitting substrate 100 is arranged in a long strip shape to form a light strip. In the existing backlight module, a light strip needs to be installed on the back panel to provide a light source to the optical film assembly. Therefore, by making the light-emitting substrate 100 arranged in a long strip shape, it is convenient to act on the existing backlight module to form a backlight source.

[0064] Among them, the light strip formed by the light-emitting substrate 100 can be used as a backlight source in a backlight module. When acting in an edge-entry backlight module, the light-emitting substrate 100 is encapsulated on the side of the liquid crystal panel. The light-emitting substrate 100 emits light from the side wall of the light guide plate into the light guide plate. After the light is reflected and refracted in the light guide plate, the light is displayed through the liquid crystal panel layer.

[0065] When the light-emitting substrate 100 acts on a direct-type backlight module, a plurality of the light-emitting substrates 100 are spliced ​​together to form a backlight source, and the spliced ​​backlight source is arranged under the liquid crystal layer to directly emit light into the liquid crystal layer.

[0066] Therefore, based on the above-mentioned light-emitting substrate 100, the present invention also provides a display device, including the above-mentioned light-emitting substrate 100, having all the technical features of the above-mentioned light-emitting substrate 100, and therefore also having the technical effects brought by all the above-mentioned technical features, without specific limitation herein.

[0067] In the display device provided by the present invention, one of the conducting lines 31 is selectively turned on, and the remaining conducting lines 31 are disconnected, so as to select the number of the light emitting devices 4 electrically connected to the second electrode line 22 .

[0068] The display device provided by the present invention includes a glass substrate 1 and a first metal layer and a second metal layer arranged on the glass substrate 1. During use, the number of light-emitting devices 4 that need to be connected to the circuit on the first electrode line 21 is selected according to actual use needs, and then one of the conductive lines 31 is correspondingly retained, and the remaining conductive lines 31 are all disconnected, so that only a preset number of light-emitting devices 4 are connected to the circuit. There is no need to produce glass substrates 1 of different lengths and specifications. Different types of light strips can be formed by only disconnecting and retaining the conductive lines 31 on the glass substrate 1, which is convenient for production and does not require setting different production light masks.

[0069] The display device can be implemented in a variety of ways, such as a computer screen, a mobile phone screen, etc., as long as the light emitted by the light-emitting substrate 100 can generate a corresponding display image.

[0070] It should be noted that, in the embodiment provided by the present invention, the display device is a micro light emitting diode display (Micro-LED), and the micro LED display generates an image through the light of the light emitting substrate 100.

[0071] The micro led display includes a plurality of the light emitting substrates 100, which are sequentially spliced ​​to form a backlight panel, and the backlight panel is used to emit light outward to provide a light source for the micro led display. In this embodiment, the micro led display includes a plurality of the light emitting substrates 100, and a backlight source is formed by the plurality of the light emitting substrates 100. When the light emitting device in one of the light emitting substrates 100 is damaged and cannot emit light, there is no need to replace the entire backlight. It is only necessary to remove the damaged light emitting substrate 100 and replace it with another light emitting substrate 100, which is more cost-effective. At the same time, backlight panels of different sizes can be formed according to actual conditions, reducing the mold manufacturing cost of the backlight panel.

[0072] Based on the above-mentioned light-emitting substrate, the present invention further provides a method for forming a light-emitting substrate, comprising the following steps:

[0073] S10, providing a cleaned glass substrate;

[0074] S20, exposing and developing to form the first metal layer on the glass substrate, wherein the first metal layer includes first electrode lines and second electrode lines;

[0075] S30, forming the second metal layer on the glass substrate by exposing and developing, wherein the second metal layer comprises a plurality of conducting lines spaced apart along a length direction of the glass substrate.

[0076] In the present invention, two different metal layers are formed directly on the existing process by exposure and development, which respectively constitute the positive and negative electrode circuits, and the conductive circuit that conducts the positive and negative electrode circuits. Since they are in different metal layers, the corresponding disconnection and conduction operations can be conveniently performed without affecting the circuits in other metal layers. The forming method is simple and reliable.

[0077] It should be noted that the thickness of the first metal layer and the second metal layer is between 0.2 μm and 5 μm, and can also be prepared by a sputtering etching process.

[0078] On the other hand, before forming the second metal layer by exposure and development on the glass substrate, an insulating layer may be formed by exposure and development on the second metal layer.

[0079] The LCD process already has two metal layers and an insulating layer, which will not increase the process cost.

[0080] Furthermore, after step S30, the method further includes:

[0081] S40, cutting the glass substrate along the length direction of the glass substrate according to a preset length.

[0082] During the production process, glass substrates of the same length are uniformly produced. After production is completed, they are divided into lengths to form light-emitting substrates of different lengths, which are convenient for subsequent use in different process products.

[0083] Based on the above display device, please refer to Figure 6 The present invention also provides a method for forming a light bar, comprising the following steps:

[0084] S01. Providing a light-emitting substrate, wherein the light-emitting substrate is a light-emitting substrate according to any one of claims 1 to 10;

[0085] S02, selecting the remaining conductive wires, and immersing the remaining conductive wires in a corrosive liquid in turn to wet-etch and disconnect the remaining conductive wires, so as to form a series conductive loop between the first electrode wire and the second electrode wire;

[0086] S03. Bonding the light-emitting device on the first electrode line to form a light bar.

[0087] In the molding method of the light bar provided by the present invention, the light-emitting substrate of the aforementioned part is provided, and according to the demand, one of the conductive wires 31 is selected to be retained, and then the remaining conductive wires 31 are immersed in a corrosive liquid so that the remaining conductive wires 31 are corroded and disconnected, and only one conductive wire 31 is left in the entire second metal layer. A display device with light-emitting devices of different light-emitting numbers can be formed on the glass substrate as needed. The adjustment method is simple and reliable, and there is no need to produce different light bar according to different light-emitting numbers. A variety of light-emitting types can be achieved under one product.

[0088] The above are only preferred embodiments of the present invention, and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A light-emitting substrate, characterized in that: include: Glass substrate; A first metal layer is provided on the glass substrate, a first electrode line and a second electrode line are formed on the first metal layer, a plurality of light-emitting devices are arranged in series on the first electrode line, and the first electrode line and the second electrode line are used to connect to different electrodes on a power source; as well as, A second metal layer is provided on the glass substrate, a plurality of conducting lines are formed on the second metal layer, the plurality of conducting lines are arranged at intervals along the length direction of the glass substrate, and each of the conducting lines is electrically connected to the first electrode line and the second electrode line at the same time; The first electrode line and the second electrode line can be selectively electrically connected to one of the plurality of conductive lines and disconnected from the remaining conductive lines to form electrical circuits of different lengths to match the glass substrate.

2. The light-emitting substrate according to claim 1, characterized in that: A plurality of first electrode lines are provided, and one ends of the plurality of first electrode lines are connected to each other; Each of the conducting lines is electrically connected to a plurality of the first electrode lines at the same time.

3. The light-emitting substrate according to claim 2, characterized in that: One ends of the plurality of first electrode lines are connected to each other to form an electrical connection portion; On a side of the same conducting line facing the electrical connection portion, a plurality of the light emitting devices are disposed on each of the first electrode lines.

4. The light-emitting substrate according to claim 3, characterized in that: On the side of the same conducting line facing the electrical connection portion, the number of the light-emitting devices on each of the first electrode lines is the same; and / or, Between two adjacent conducting lines, the number of the light emitting devices on each of the first electrode lines is the same.

5. The light-emitting substrate according to claim 1, characterized in that: All the light emitting devices on the first metal layer are arranged in parallel.

6. The light-emitting substrate according to claim 1, characterized in that: The metal activity of the metal material in the first metal layer is lower than that in the second metal layer.

7. The light-emitting substrate according to claim 1, characterized in that: The light emitting device comprises a plurality of lamp beads arranged in series.

8. The light emitting substrate according to claim 1, characterized in that: An insulating layer is further disposed between the first metal layer and the second metal layer.

9. A display device, characterized in that: comprising a light-emitting substrate according to any one of claims 1 to 7; Wherein, one of the conducting lines is selected to be turned on, and the remaining conducting lines are disconnected, so as to select the number of light-emitting devices electrically connected to the second electrode line.

10. A method for forming a light bar, for producing the display device according to claim 9, characterized in that: The following steps are involved: Providing a light-emitting substrate, wherein the light-emitting substrate is a light-emitting substrate according to any one of claims 1 to 8; Select the remaining conductive wires, immerse the remaining conductive wires in the corrosive liquid in turn, and wet-etch to disconnect the remaining conductive wires, so as to form a series conductive loop between the first electrode wire and the second electrode wire; The light emitting device is bonded on the first electrode line to form a light bar.

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