Display device

Abstract

The utility model provides a display device. The display device comprises a liquid crystal display panel and a backlight module, and the backlight module comprises a lamp panel; the light-emitting unit is arranged on the surface of the side, close to the liquid crystal display panel, of the lamp panel. The lamp panel and the liquid crystal display panel are connected through a welding structure. According to the display device, the lamp panel and the liquid crystal display panel are connected through the welding structure, the cohesiveness between the lamp panel and the liquid crystal display panel is improved, the thickness of the display device is reduced, and the manufacturing cost of the display device is saved by arranging the lamp panel and the light-emitting unit.

Description

Technical Field

[0001] The utility model relates to the field of display technology, in particular to a display device. Background Art

[0002] FSC liquid crystal display panel (Field-Sequential-Color LCD) is a next-generation liquid crystal display panel with high image quality and low power consumption. Its advantages are that it does not require color filters, can increase light transmittance by three times, and can reduce power loss. It can directly use software to change the color of the display to present a colorful effect, with high contrast and bright colors. FSC liquid crystal display panel is suitable for home appliances, game consoles, musical instruments, instruments, and public information display devices.

[0003] The FSC liquid crystal display panel uses a high-speed liquid crystal display mode with red, green and blue backlight effects to display them in sequence. Specifically, it uses time sequence to display red (R), green (G), blue (B) and other sub-images, and uses the human eye's visual persistence to present full-color images on the retina through time mixing. Therefore, FSC-LCD must be used with an RGB LED backlight module. However, the existing FSC display device is relatively thick and has a high manufacturing cost. Utility Model Content

[0004] The present application provides a display device, which mainly solves the problem that the existing display devices are relatively thick and have high manufacturing costs.

[0005] In order to solve the above technical problems, a technical solution adopted by the present application is to provide a display device, including a liquid crystal display panel and a backlight module, wherein the backlight module includes:

[0006] Light board;

[0007] A light emitting unit is arranged on a surface of the light board close to the liquid crystal display panel;

[0008] The light board and the liquid crystal display panel are connected via a welding structure.

[0009] In a specific embodiment, the width of the welding structure is 50 μm-100 μm.

[0010] In a specific embodiment, the light board includes:

[0011] substrate;

[0012] A circuit layer is arranged on one side of the substrate; a plurality of light-emitting units are arranged at intervals on a side of the circuit layer away from the substrate and are electrically connected to the circuit layer;

[0013] A diffuse reflection layer is arranged on a surface of the circuit layer which is away from the substrate, and the diffuse reflection layer is used to make the light emitted by the light-emitting unit uniform.

[0014] In a specific implementation, the thickness of the diffuse reflection layer is 100 μm-200 μm; and the material of the diffuse reflection layer is nanomaterial.

[0015] In a specific implementation, the total reflectivity of the diffuse reflection layer is 96%; and the high diffuse reflectivity of the diffuse reflection layer is 94%.

[0016] In a specific embodiment, the liquid crystal display panel includes:

[0017] a first substrate;

[0018] A second substrate is disposed opposite to the first substrate and is located on a side of the first substrate close to the backlight module;

[0019] a liquid crystal layer, disposed between the first substrate and the second substrate;

[0020] A first polarizer is disposed on a surface of the first substrate away from the liquid crystal layer;

[0021] A second polarizer is disposed on a surface of the second substrate close to the backlight module;

[0022] A diffusion layer, disposed on a surface of the second polarizer close to the backlight module, for making the light emitted by the light-emitting unit uniform;

[0023] The substrate edge of the lamp board and the edge of the second substrate are connected via a welding structure.

[0024] In a specific embodiment, the thickness of the second polarizer is 0.1 mm-0.2 mm; the thickness of the diffusion layer is 0.1 mm-0.2 mm.

[0025] In a specific embodiment, the display device is a FSC liquid crystal display device.

[0026] In a specific embodiment, the number of the liquid crystal display panels is two, namely a first liquid crystal panel and a second liquid crystal panel; the first liquid crystal panel and the second liquid crystal panel are respectively arranged on opposite sides of the backlight module;

[0027] The light emitting unit comprises a first light emitting unit and a second light emitting unit;

[0028] The light board comprises:

[0029] substrate;

[0030] A first circuit layer is disposed on a side of the substrate close to the first liquid crystal panel;

[0031] A second circuit layer is arranged on a side of the substrate close to the second liquid crystal panel;

[0032] The first light emitting unit is arranged on a side of the first circuit layer close to the first liquid crystal panel; the second light emitting unit is arranged on a side of the second circuit layer close to the second liquid crystal panel.

[0033] In a specific embodiment, the light board is connected to the first liquid crystal panel via a first welding structure, and the light board is connected to the second liquid crystal panel via a second welding structure; or,

[0034] The opposing surfaces of the first liquid crystal panel and the second liquid crystal panel and the side surface of the light board are directly connected through the same welding structure.

[0035] The present application provides a display device. The display device includes a liquid crystal display panel and a backlight module, wherein the backlight module includes a lamp board and a light-emitting unit; the light-emitting unit is arranged on a side surface of the lamp board close to the liquid crystal display panel; the lamp board and the liquid crystal display panel are connected by a welding structure. The display device increases the adhesion between the lamp board and the liquid crystal display panel by connecting the lamp board and the liquid crystal display panel using a welding structure, reduces the thickness of the display device, and saves the manufacturing cost of the display device by arranging the lamp board and the light-emitting unit. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0037] Figure 1 A schematic diagram of the specific structure of the display device provided in the first embodiment of the present application;

[0038] Figure 2 A schematic diagram of the specific structure of a display device provided in the second embodiment of the present application;

[0039] Figure 3 A schematic diagram of the specific structure of a display device provided in the third embodiment of the present application;

[0040] Figure 4 A schematic diagram of the specific structure of a display device provided in the fourth embodiment of the present application;

[0041] Figure 5This is a schematic diagram of the same welding structure.

[0042] Description of Figure Numbers:

[0043] 10-liquid crystal display panel; 11-first substrate; 12-second substrate; 13-liquid crystal layer; 14-first polarizer; 15-second polarizer; 16-diffusion layer; 20-backlight module; 21-light board; 211-substrate; 212-circuit layer; 212a-first circuit layer; 212b-second circuit layer; 213-diffuse reflection layer; 213a-first diffuse reflection layer; 213b-second diffuse reflection layer; 22-light-emitting unit; 221-first light-emitting unit; 222-second light-emitting unit; 30-welding structure; 31-first welding structure; 32-second welding structure; D1-first liquid crystal panel; D2-second liquid crystal panel; 100-display device. DETAILED DESCRIPTION

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

[0045] The terms "first", "second", "third" in this application are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features. Thus, the features defined as "first", "second", "third" can expressly or implicitly include at least one of the features. In the description of this application, the meaning of "multiple" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined. In the embodiments of this application, all directional indications (such as up, down, left, right, front, back...) are only used to explain the relative position relationship, movement, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication also changes accordingly. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device comprising a series of steps or units is not limited to the steps or units listed, but optionally also includes steps or units that are not listed, or optionally also includes other steps or units inherent to these processes, methods, products or devices.

[0046] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0047] The present application is described in detail below with reference to the accompanying drawings and embodiments.

[0048] See also Figure 1 , Figure 1 A schematic diagram of the specific structure of a display device provided in the first embodiment of the present application. The present application provides a display device 100, which includes a liquid crystal display panel 10, a backlight module 20, and a welding structure 30. The backlight module 20 includes a lamp board 21 and a light-emitting unit 22. The light-emitting unit 22 is disposed on a side surface of the lamp board 21 close to the liquid crystal display panel 10. The lamp board 21 and the liquid crystal display panel 10 are connected by the welding structure 30.

[0049] Specifically, the welding structure 30 only needs a clearance area of ​​100 μm-200 μm. For example, the width of the clearance area can be 100 μm, 120 μm, 140 μm, 160 μm, 180 μm, 200 μm. Specifically, the width of the welding structure 30 is 50 μm-100 μm. For example, the width of the welding structure 30 can be 50 μm, 60 μm, 70 μm, 80 μm, 90 μm, 100 μm. It is understood that in the actual production process, the number of welding structures 30 can be increased according to the actual bonding force requirements.

[0050] Compared with the existing display device 100, the present application mainly connects the lamp board 21 and the liquid crystal display panel 10 using a welding structure 30, thereby increasing the adhesion between the lamp board 21 and the liquid crystal display panel 10 and reducing the thickness of the display device 100. In addition, the preparation cost of the display device 100 is saved by setting the lamp board 21 and the light-emitting unit 22. The display device 100 provided in the present application is a FSC (Field Sequential Color) liquid crystal display device 100, and the thickness of the display device 100 is reduced by eliminating the color filter. The liquid crystal layer 13 in the FSC display device 100 is a high-speed liquid crystal, which improves the light transmittance and reduces power loss.

[0051] Continue reading Figure 1, the light board 21 includes a substrate 211 and a circuit layer 212. Among them, the circuit layer 212 is arranged on one side of the substrate 211; a plurality of light-emitting units 22 are arranged at intervals on the side of the circuit layer 212 away from the substrate 211 and are electrically connected to the circuit layer 212. In a specific embodiment, in order to facilitate welding, the substrate 211 of the light board 21 is a glass substrate. The circuit layer 212 is electrically connected to the light-emitting unit 22, and is used to drive the light-emitting unit 22 to emit light. The light-emitting unit 22 is electrically connected to the circuit layer 212. Specifically, the light-emitting unit 22 can be a red light-emitting unit, a green light-emitting unit and a blue light-emitting unit to form a plurality of repeating units, so as to emit red light, green light and blue light respectively. In the present application, the light-emitting units 22 on the light board 21 can be placed horizontally, vertically or tilted, and the arrangement of the light-emitting units 22 on the light board 21 is not limited here. The display device 100 provided in this embodiment mainly controls the deflection of the liquid crystal layer 13 and the switching of the light-emitting unit 22 through the circuit layer 212 to achieve the brightness change of the light of the display device 100 and realize the color display of the display device 100.

[0052] The liquid crystal display panel 10 includes a first substrate 11, a second substrate 12, a liquid crystal layer 13, a first polarizer 14, and a second polarizer 15. The second substrate 12 is opposite to the first substrate 11 and is located on the side of the first substrate 11 close to the backlight module 20. The second substrate 12 is a glass substrate for the convenience of welding. The liquid crystal layer 13 is arranged between the first substrate 11 and the second substrate 12. The first polarizer 14 is arranged on the side surface of the first substrate 11 away from the liquid crystal layer 13. The second polarizer 15 is arranged on the side surface of the second substrate 12 close to the backlight module 20. In a specific embodiment, the second substrate 12 is an array substrate, and the first substrate 11 is an opposite substrate. Different from the opposite substrate in the prior art, the first substrate 11 in the present application cancels the color filter, but the first substrate 11 still includes a black matrix (not shown) and an alignment layer (not shown). The black matrix mainly plays a light shielding role to reduce the probability of light leakage of the display device 100, and the alignment layer is to ensure the liquid crystal deflection of the liquid crystal layer 13.

[0053] In a specific embodiment, solder filling can be performed in advance; then the laser is focused on the solder. The solder is first melted and then solidified into a welding structure 30, further increasing the adhesion between the lamp board 21 and the liquid crystal display panel 10. Specifically, the material of the solder is polyamide, epoxy resin, unsaturated polyester resin, etc. Among them, unsaturated polyester resin is the most commonly used solder material, which can be perfectly integrated with glass materials to form a solid welding structure 30 to reduce the erosion of external water vapor.

[0054] See also Figure 2 , Figure 2A schematic diagram of the specific structure of the display device provided in the second embodiment of the present application. The structure of the display device 100 provided in this embodiment is basically the same as that in the first embodiment, except that the light board 21 of the display device 100 provided in this embodiment also includes a diffuse reflection layer 213. Among them, the diffuse reflection layer 213 is arranged on the side surface of the circuit layer 212 away from the substrate 211, and the diffuse reflection layer 213 is used to uniformly emit light from the light-emitting unit 22. The diffuse reflection layer 213 can evenly convert the point light source of the light-emitting unit 22 into a surface light source, so that the light forms a good diffuse reflection, thereby achieving a uniform effect, which makes the overall light source more uniform, soft and full. Specifically, the total reflectivity of the diffuse reflection layer 213 is 96%. The high diffuse reflectivity of the diffuse reflection layer 213 is 94%.

[0055] Specifically, the diffuse reflection layer 213 is made of nanomaterials. Nanomaterials have the advantage of high hardness. The diffuse reflection layer 213 can not only evenly distribute the light emitted by the light-emitting unit 22, but also isolate the circuit layer 212 from corrosion by air and water vapor. At the same time, the diffuse reflection layer 213 can improve the light-emitting efficiency of the display device 100, thereby ensuring the display effect of the display device 100.

[0056] Specifically, the thickness of the diffuse reflection layer 213 is 100 μm-200 μm. For example, the thickness of the diffuse reflection layer 213 can be 100 μm, 120 μm, 140 μm, 160 μm, 180 μm, or 200 μm.

[0057] See also Figure 3 , Figure 3 A schematic diagram of the specific structure of the display device provided in the third embodiment of the present application. The structure of the display device 100 provided in this embodiment is basically the same as that in the first embodiment, except that the display device 100 provided in this embodiment also includes a diffusion layer 16. In a specific embodiment, the diffusion layer 16 is arranged on a side surface of the second polarizer 15 close to the backlight module 20, and is used to uniformly distribute the light emitted by the light-emitting unit 22. Specifically, the thickness of the second polarizer 15 is 0.1mm-0.2mm. Specifically, the thickness of the diffusion layer 16 is 0.1mm-0.2mm. Among them, the edge of the substrate 211 of the light board 21 and the edge of the second substrate 12 are connected by a welding structure 30. In a specific embodiment, there are two main ways to set the diffusion layer 16: the first method is to attach the diffusion layer 16 to the side surface of the second polarizer 15 close to the backlight module 20 through an optical clear adhesive (OCA), and the size of the diffusion layer 16 is the same as the second polarizer 15; the second method is to form a coating with a thickness of 0.1mm-0.2mm on the side surface of the second substrate 12 close to the backlight module 20 through spraying or magnetron sputtering technology, and then apply a layer of diffusion layer 16, the thickness of which is also 0.1mm-0.2mm.

[0058] See also Figure 4 , Figure 4 A schematic diagram of the specific structure of the display device provided in the fourth embodiment of the present application. The structure of the display device 100 provided in this embodiment is basically the same as that in any of the above embodiments, except that the number of liquid crystal display panels 10 included in the display device 100 provided in this embodiment is two. This embodiment is specifically described by taking the structure of the display device 100 similar to that in the above second embodiment as an example, wherein the number of liquid crystal display panels 10 is two, namely, a first liquid crystal panel D1 and a second liquid crystal panel D2; the first liquid crystal panel D1 and the second liquid crystal panel D2 are respectively arranged on opposite sides of the backlight module 20. The light-emitting unit 22 includes a first light-emitting unit 221 and a second light-emitting unit 222. The light board 21 includes a substrate 211, a first circuit layer 212a, a second circuit layer 212b, a first light-emitting unit 221 and a second light-emitting unit 222. The first circuit layer 212a is arranged on the side of the substrate 211 close to the first liquid crystal panel D1. The second circuit layer 212b is arranged on the side of the substrate 211 close to the second liquid crystal panel D2. The first light emitting unit 221 is disposed on the side of the first circuit layer 212a close to the first liquid crystal panel D1, and the second light emitting unit 222 is disposed on the side of the second circuit layer 212b close to the second liquid crystal panel D2. Compared with a single-sided design, this can form a double-sided display device 100.

[0059] In a specific embodiment, the display device 100 further includes a first diffuse reflection layer 213a and a second diffuse reflection layer 213b. The first diffuse reflection layer 213a is disposed on a surface of the first circuit layer 212a away from the substrate 211; the second diffuse reflection layer 213b is disposed on a surface of the second circuit layer 212b away from the substrate 211. The first diffuse reflection layer 213a and the second diffuse reflection layer 213b are used to uniformly distribute the light emitted by the light emitting unit 22; the point light source of the light emitting unit 22 can be uniformly converted into a surface light source, so that the light forms a good diffuse reflection, thereby achieving a uniform effect, which makes the overall light source more uniform, soft, and full.

[0060] The light board 21 is connected to the first liquid crystal panel D1 through a first welding structure 31, and the light board 21 is connected to the second liquid crystal panel D2 through a second welding structure 32; or, the opposite surfaces of the first liquid crystal panel D1 and the second liquid crystal panel D2 and the side surface of the light board 21 are directly connected through the same welding structure 30. It can be understood that the light board 21 and the first liquid crystal panel D1 and the second liquid crystal panel D2 are welded separately, such as Figure 4 Alternatively, the light board 21 and the first liquid crystal panel D1 and the second liquid crystal panel D2 may be directly welded via the same welding structure 30. Figure 5 , Figure 5 This is a schematic diagram of the same welding structure.

[0061] The present application provides a display device 100. The display device 100 includes a liquid crystal display panel 10 and a backlight module 20, wherein the backlight module 20 includes a lamp board 21 and a light-emitting unit 22; the light-emitting unit 22 is arranged on a side surface of the lamp board 21 close to the liquid crystal display panel 10; and the lamp board 21 and the liquid crystal display panel 10 are connected by a welding structure 30. The display device 100 increases the bonding between the lamp board 21 and the liquid crystal display panel 10 by connecting the lamp board 21 and the liquid crystal display panel 10 using the welding structure 30, reduces the thickness of the display device 100, and saves the material cost and preparation process cost of the display device 100 by directly welding the lamp board 21 and the light-emitting unit 22 without setting a color filter. Because there is no color filter and the display device 100 uses a high-speed liquid crystal, the light transmittance is improved, and the display quality of the display device 100 is further guaranteed.

[0062] It will be apparent to those skilled in the art that the present application is not limited to the details of the exemplary embodiments described above, and that the present application can be implemented in other specific forms without departing from the spirit or essential features of the present application. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the present application is defined by the appended claims rather than the above description, and it is intended that all changes within the meaning and scope of the equivalent elements of the claims be included in the present application. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

[0063] The above description is only an implementation method of the present application, and does not limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made using the contents of the present application specification and drawings, or directly or indirectly used in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. A display device, comprising a liquid crystal display panel and a backlight module, wherein: The backlight module comprises: Light board; A light emitting unit is arranged on a surface of the light board close to the liquid crystal display panel; The invention is characterized in that the light board and the liquid crystal display panel are connected through a welding structure.

2. The display device according to claim 1, characterized in that The width of the welding structure is 50 μm-100 μm.

3. The display device according to claim 1, characterized in that The light board comprises: substrate; A circuit layer is arranged on one side of the substrate; a plurality of light-emitting units are arranged at intervals on a side of the circuit layer away from the substrate and are electrically connected to the circuit layer; A diffuse reflection layer is arranged on a surface of the circuit layer which is away from the substrate, and the diffuse reflection layer is used to make the light emitted by the light-emitting unit uniform.

4. The display device according to claim 3, characterized in that The thickness of the diffuse reflection layer is 100 μm-200 μm; the material of the diffuse reflection layer is nano material.

5. The display device according to claim 3, characterized in that: The total reflectivity of the diffuse reflection layer is 96%; the high diffuse reflectivity of the diffuse reflection layer is 94%.

6. The display device according to claim 1, characterized in that: The liquid crystal display panel comprises: a first substrate; A second substrate is disposed opposite to the first substrate and is located on a side of the first substrate close to the backlight module; a liquid crystal layer, disposed between the first substrate and the second substrate; A first polarizer is disposed on a surface of the first substrate away from the liquid crystal layer; A second polarizer is disposed on a surface of the second substrate close to the backlight module; A diffusion layer, disposed on a surface of the second polarizer close to the backlight module, for making the light emitted by the light-emitting unit uniform; The substrate edge of the lamp board and the edge of the second substrate are connected via a welding structure.

7. The display device according to claim 6, characterized in that: The thickness of the second polarizer is 0.1 mm-0.2 mm; the thickness of the diffusion layer is 0.1 mm-0.2 mm.

8. The display device according to any one of claims 1 to 7, characterized in that: The display device is a FSC liquid crystal display device.

9. The display device according to claim 8, characterized in that: The number of the liquid crystal display panels is two, namely a first liquid crystal panel and a second liquid crystal panel; the first liquid crystal panel and the second liquid crystal panel are respectively arranged on opposite sides of the backlight module; The light emitting unit comprises a first light emitting unit and a second light emitting unit; The light board comprises: substrate; A first circuit layer is disposed on a side of the substrate close to the first liquid crystal panel; A second circuit layer is arranged on a side of the substrate close to the second liquid crystal panel; The first light emitting unit is arranged on a side of the first circuit layer close to the first liquid crystal panel; the second light emitting unit is arranged on a side of the second circuit layer close to the second liquid crystal panel.

10. The display device according to claim 9, characterized in that: The light board is connected to the first liquid crystal panel via a first welding structure, and the light board is connected to the second liquid crystal panel via a second welding structure; or, The opposing surfaces of the first liquid crystal panel and the second liquid crystal panel and the side surface of the light board are directly connected through the same welding structure.

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