Full-lamination touch display screen and display device

Abstract

The invention discloses a full-lamination touch display screen and a display device, relates to the technical field of display, and discloses a full-lamination touch display screen which comprises a glass cover plate, a liquid crystal module and a backlight module which are laminated in sequence, the first side of the glass cover plate is connected with the first side of the liquid crystal module through OCA optical cement, and no gap exists between the glass cover plate and the liquid crystal module. The second side of the liquid crystal module is connected with the backlight module through a buffer layer, the liquid crystal module is not in direct contact with the backlight module, and structural adhesive is arranged in a gap between the glass cover plate and the backlight module. Compared with the prior art, the liquid crystal module and the backlight module are connected through the buffer layer, so that the situation of light leakage or module fragmentation caused by contact of the liquid crystal module and the backlight module is avoided. The structural adhesive is arranged in the gap between the glass cover plate and the backlight module, so that the screen has good leakproofness and is not damaged due to the influence of external water and air.

Description

Technical Field

[0001] The present invention relates to the field of display technology, and in particular to a fully laminated touch display screen and a display device. Background Art

[0002] Traditional display screens are generally composed of a glass cover, display module, backlight module, PCBA, back cover, bracket and connecting structural parts. At present, display screens are generally assembled in a full-bonding form. Full bonding means that the glass cover and display module, the backlight module and the glass cover are bonded together with optical glue and structural glue respectively, and the components inside the display module and the backlight module are bonded on all sides with optical glue. The fully bonded display screen has the advantages of light and thin screen, waterproof and dustproof, borderless, and drop-resistant. Since the glass cover and backlight module of the fully bonded display screen are directly or indirectly connected to the display module, it is easy for the display module to be squeezed, resulting in light leakage, stripes, spots and other Mura (uneven brightness on the screen) defects.

[0003] The above contents are only used to assist in understanding the technical solution of the present invention and do not constitute an admission that the above contents are prior art. Summary of the invention

[0004] The main purpose of the present invention is to provide a fully laminated touch display screen and a display device, aiming to solve the technical problem of generating Mura undesirable phenomena such as light leakage, stripes, spots, etc.

[0005] To achieve the above object, the present invention provides a fully laminated touch display screen, comprising a glass cover plate, a liquid crystal module and a backlight module laminated in sequence;

[0006] The first side of the glass cover plate is connected to the first side of the liquid crystal module through OCA optical adhesive, and there is no gap between the glass cover plate and the liquid crystal module;

[0007] The second side of the liquid crystal module is connected to the backlight module through a buffer layer, the liquid crystal module has no direct contact with the backlight module, and a structural adhesive is arranged between the gap between the glass cover plate and the backlight module.

[0008] In one embodiment, the fully laminated touch display screen further includes:

[0009] Touch module and backlight backplane;

[0010] The first side of the touch module is connected to the first side of the glass cover plate, and the second side of the touch module is connected to the first side of the liquid crystal module;

[0011] The first side of the backlight back plate is connected to the second side of the backlight module.

[0012] In one embodiment, the glass cover plate is connected to the touch module and the backlight back plate respectively through PUR glue.

[0013] In one embodiment, the backlight module includes:

[0014] Backlight frame glue, multi-layer dual brightness enhancement film, brightness enhancement film, diffusion film, diffusion plate, LED light board, reflection plate, thermal conductive double-sided adhesive and pressure-sensitive adhesive are stacked in sequence;

[0015] The first side of the backlight frame adhesive is connected to the second side of the liquid crystal module, and the second side of the pressure-sensitive adhesive is connected to the first side of the backlight back plate.

[0016] In one embodiment, the liquid crystal module includes:

[0017] The upper polarizer, the pressure-sensitive adhesive, the liquid crystal assembly, the lower polarizer and the flexible printed circuit board are stacked in sequence;

[0018] The first side of the upper polarizer is connected to the second side of the touch module, and the second side of the flexible printed circuit board is connected to the first side of the backlight module.

[0019] In one embodiment, the liquid crystal module further includes:

[0020] TFT-LCD modules and flexible circuit board sets;

[0021] The first side of the TFT-LCD module is connected to the second side of the flexible circuit board assembly, and the second side of the TFT-LCD module is connected to the first side of the backlight module;

[0022] The first side of the flexible circuit board assembly is connected to the first side of the glass cover plate.

[0023] In one embodiment, the TFT-LCD module comprises:

[0024] Color filters, liquid crystal molecules, thin film transistors, glass, electrodes, capacitors, alignment films and supporting materials are stacked in sequence;

[0025] The first side of the color filter is connected to the second side of the flexible circuit board assembly, and the second side of the supporting material is connected to the first side of the backlight module.

[0026] In one embodiment, the buffer gap between the liquid crystal module and the backlight module is 0.3 mm to 0.6 mm.

[0027] In one embodiment, the buffer layer has a thickness of 0.15 mm to 0.25 mm.

[0028] The present invention further provides a display device, which includes the fully laminated touch display screen.

[0029] The present invention provides a fully bonded touch screen and display device, the fully bonded touch screen comprises a glass cover plate, a liquid crystal module and a backlight module bonded in sequence: the first side of the glass cover plate is connected to the first side of the liquid crystal module through OCA optical glue, and there is no gap between the glass cover plate and the liquid crystal module; the second side of the liquid crystal module is connected to the backlight module through a buffer layer, and the liquid crystal module and the backlight module have no direct contact, and a structural adhesive is arranged between the gap between the glass cover plate and the backlight module. Compared with the prior art, the present invention connects the liquid crystal module and the backlight module by using a buffer layer to avoid light leakage or module fragmentation due to contact between the two. The structural adhesive is arranged in the gap between the glass cover plate and the backlight module, so that the screen has good airtightness and is not damaged by the influence of external water and air. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and, together with the description, serve to explain the principles of the invention.

[0031] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0032] Figure 1 This is a schematic structural diagram of a first embodiment of a fully laminated touch display screen of the present invention;

[0033] Figure 2 It is a structural schematic diagram of a glass cover plate and a liquid crystal module in a fully laminated touch display screen of the present invention;

[0034] Figure 3 It is a structural schematic diagram of a second embodiment of a fully laminated touch display screen of the present invention;

[0035] Figure 4 It is a schematic diagram of the structure of the touch module of the full-laminated touch display screen of the present invention in the cover layer and the TFT-LCD layer;

[0036] Figure 5 It is a schematic diagram of the structure of a liquid crystal module of a fully laminated touch display screen of the present invention;

[0037] Figure 6 This is a schematic diagram of the backlight module structure of the fully laminated touch display screen of the present invention;

[0038] Figure 7This is a diagram of the entire display screen based on the fully laminated structure of the fully laminated touch display screen of the present invention;

[0039] Figure 8 It is a schematic diagram of the backlight back panel structure of the fully laminated touch display screen of the present invention;

[0040] Fig. 9 The figure is a process flow chart of the fully laminated touch display screen of the present invention.

[0041] Description of Figure Numbers:

[0042] Label name Label name 1 Optical Film 2 Glass cover 3 Touch Module 4 OCA optical adhesive 5 LCD Module 6 Structural adhesive 7 Backlight module 8 Backlight back panel 9 Shielding cover 10 PCBA control card 11 Mounting bracket 12 Back shell 13 Screws 14 Buckle 51 Upper polarizer 52 Pressure sensitive adhesive 53 Liquid crystal components 54 Lower polarizer 55 FPC circuit board 71 Backlight frame glue 72 Multi-layer structure dual brightness enhancement film 73 Brightness Enhancement Film 74 Diffuser 75 Diffuser Plate 76 LED Light Board 77 Reflector 78 Thermally conductive double-sided tape 7X Pressure sensitive adhesive 8-1 Reinforcement 8-2 Screw holes

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

[0044] It should be understood that the specific embodiments described herein are only used to explain the technical solutions of the present invention and are not used to limit the present invention.

[0045] In order to better understand the technical solution of the present invention, a detailed description will be given below in conjunction with the accompanying drawings and specific implementation methods.

[0046] Since traditional display screens are generally composed of glass cover plates, display modules, backlight modules, PCBA, back shells, brackets and connecting structural parts. At present, display screens are generally assembled in a full-bonding form. Full bonding means that the glass cover plate and the display module, the backlight module and the glass cover plate are bonded together with optical glue and structural glue respectively, and the components inside the display module and the backlight module are bonded on all sides with optical glue. The fully bonded display screen has the advantages of light and thin screen, waterproof and dustproof, no border, and anti-fall. Since the glass cover plate and the backlight module of the fully bonded display screen are directly or indirectly connected to the display module, it is easy for the display module to be squeezed, resulting in light leakage, stripes, spots and other Mura (uneven brightness on the screen) defects.

[0047] The present invention provides a solution, including a glass cover plate, a liquid crystal module and a backlight module that are bonded in sequence; the first side of the glass cover plate is connected to the first side of the liquid crystal module through OCA optical glue, and there is no gap between the glass cover plate and the liquid crystal module; the second side of the liquid crystal module is connected to the backlight module through a buffer layer, and the liquid crystal module and the backlight module have no direct contact, and a structural glue is arranged between the gap between the glass cover plate and the backlight module.

[0048] For ease of understanding, the following combination Figures 1 to 9 This embodiment and the following embodiments are described in detail.

[0049] Reference Figure 1, Figure 1 It is a structural schematic diagram of the first embodiment of the fully laminated touch display screen of the present invention.

[0050] like Figure 1 As shown, the fully laminated touch display screen includes a glass cover plate 2, a liquid crystal module 5 and a backlight module 7 laminated in sequence;

[0051] The first side of the glass cover plate 2 is connected to the first side of the liquid crystal module 5 through the OCA optical adhesive 4, and there is no gap between the glass cover plate 2 and the liquid crystal module 5;

[0052] The second side of the liquid crystal module 2 is connected to the backlight module 7 via a buffer layer, the liquid crystal module 5 is not in direct contact with the backlight module 7 , and a structural adhesive 6 is provided between the gap between the glass cover plate 2 and the backlight module 7 .

[0053] It should be noted that the above-mentioned buffer layer can be a compressible buffer foam.

[0054] In the specific implementation, in order to eliminate the light loss such as bubbles and diffuse reflection generated by the traditional frame sticker, in this embodiment, compressible buffer foam is selected to connect the liquid crystal module 5 and the backlight module 7 to avoid the occurrence of adverse conditions such as light leakage or module fragmentation caused by contact between the two. In this embodiment, the optical film 1 is one or more of anti-glare (AR), anti-reflection anti-reflection (AG) and anti-fingerprint (AF) films, and is attached to the glass cover plate 2 in the form of coating or film, providing anti-glare, anti-reflection anti-reflection and anti-fingerprint functions for the display screen. The glass cover plate 2 is fully bonded to the display module through OCA optical glue 4. In order to ensure flatness, OCA optical glue 4 is preferred. The liquid crystal module 5 is composed of a liquid crystal display component and a flexible circuit board containing a driving circuit. The liquid crystal display component is used for full-color display based on red, green and blue primary color pixels. The flexible circuit board and components are mainly used to drive light emission and control pixel points. The liquid crystal module 5 and the backlight module 7 together constitute a display module, and a flexible buffer is formed between the liquid crystal module 5 and the backlight module 7 through a compressible buffer foam to reduce the extrusion of the display module. The backlight backplane 8 is connected to the backlight module 7 through a heat-conducting double-sided adhesive, and the backlight backplane 8 is connected to the glass cover plate 2 through a structural adhesive 6. The shielding cover 9, the PCBA control card 10 and the mounting bracket 11 are connected to the backlight backplane 8 through screws 13. The shielding cover 9 also serves as a bracket for the PCBA control card 10, and the PCBA control card 10 is fixed to the shielding cover 9 through screws 13. The mounting bracket 11 is used for connecting and installing the display screen with external devices, and also serves as an intermediate connector connecting the rear shell 12, the shielding cover 9, the PCBA control card 10 and the backlight backplane 8. In order to reduce the weight of the display screen, the rear shell 12 of the present invention is made of plastic material. In order to improve the structural strength, a plurality of hexagonal reinforcing ribs 8-1 are provided on the rear shell 12, and the rear shell 12 is connected to the mounting bracket 11 and the backlight backplane 8 through buckles 14 and screws 13.

[0055] refer to Figure 3 , Figure 3 It is a structural schematic diagram of a second embodiment of the fully laminated touch display screen of the present invention.

[0056] like Figure 3 As shown, the specific bonding method in this embodiment is: the optical film 1 is attached to the glass cover plate 2 by coating or film bonding, the glass cover plate 2 or the glass cover plate 2 + touch module 3 is bonded to the liquid crystal module 5 by OCA optical glue 4, the liquid crystal module 5 is connected to the backlight module 7 by compressible buffer foam, the backlight module 7 is bonded to the backlight backplane 8 by strong adhesive double-sided adhesive, and the backlight backplane is bonded to the glass cover plate 2 by structural adhesive 6. Structural adhesive 6 can be PUR flexible structural adhesive or VHB double-sided adhesive tape. The compressible buffer foam is used for buffering between the liquid crystal module 5 and the backlight module 7 to prevent the two from squeezing and colliding. The interior of the liquid crystal module 5 is composed of an upper polarizer 51, a pressure-sensitive adhesive 52, a liquid crystal assembly 53, a lower polarizer 54 and a flexible printed circuit board 55, wherein the liquid crystal assembly 53 is composed of a color filter, a liquid crystal molecule, a TFT (thin film transistor) array and glass, electrodes, capacitors, alignment films and supporting materials. The backlight module 7 is composed of a backlight frame glue 71, a multi-layer dual brightness enhancement film 72, a brightness enhancement film 73, a diffusion film 74, a diffusion plate 75, an LED light board 76, a reflector 77, a heat-conducting double-sided adhesive 78 and a pressure-sensitive adhesive 7X. The advantages of the fully bonded structure are: (1) The glass cover plate 2 and the liquid crystal module 5 are seamlessly bonded by the OCA optical adhesive 4, so that there is no air between the screens, which can greatly reduce light reflection and light loss, thereby improving brightness, and at the same time play a role in waterproofing and dustproofing. (2) The liquid crystal module 5 and the backlight module 7 are connected by compressible buffer foam, and the air is removed by vacuuming before sealing and bonding. The thickness of the compressible buffer foam is compressed by about 0.2mm after bonding. This connection method can ensure that there is a buffer gap of about 0.5mm between the liquid crystal module 5 and the backlight module 7, avoiding the liquid crystal module 5 from being crushed by the rigid backlight module 7 and the backlight backboard 8, and is also convenient for maintenance, such as replacing a broken backlight module 5. (3) The backlight back panel 8 is connected to the glass cover plate 2 or the glass cover plate 2 + touch module 3 through the structural adhesive 6 to realize the connection between the backlight module 7 and the glass cover plate 2, thereby forming a closed space inside the display screen to isolate water and oxygen and play a protective role. The air is removed by vacuum treatment before sealing and bonding.

[0057] refer to Figure 4 , Figure 4 It is a schematic diagram of the structure of the touch module of the full-laminated touch display screen of the present invention in the cover layer and the TFT-LCD layer.

[0058] like Figure 4As shown, the touch module 3 is coupled in the glass cover 2 layer or the TFT-LCD module layer. The touch module 3 is coupled on the glass cover 2, which is one of the GFF (Glass+Film+Film) or OGS (One Glass Solution) structures. The GFF structure is to make the touch sensor and circuit on a transparent film such as PET, and then the film is bonded to the glass cover by OCA optical glue. The OGS structure is to directly make the touch sensor and circuit on the cover glass. The touch module 5 is coupled in the TFT-LCD module in FOG (FOG, full name Film On Glass, is a technology that directly bonds the touch sensing layer (usually ITO film) to the glass substrate) and is divided into OnCell and InCell structures. The OnCell structure is to embed the touch layer between the color filter substrate and the polarizer, and the InCell structure is to embed the touch layer in the liquid crystal pixel.

[0059] refer to Figure 5 , is a schematic diagram of the structure of a liquid crystal module of a fully laminated touch display screen of the present invention.

[0060] The liquid crystal module 5 and the backlight module 7 are the most important components of the display screen, providing display function and backlight function respectively. The liquid crystal module 5 is composed of a TFT-LCD module and a flexible circuit board assembly. The driving flexible circuit board assembly and the TFT-PCBA are connected to the glass layer where the thin film transistor is located through ACF (Anisotropic conductive film) conductive glue, and then polarizers are added to the front and back sides of the glass. The connection method is as follows: Figure 5 As shown. The TFT-LCD module is composed of polarizer, glass, color filter, liquid crystal, thin film transistor, electrode, capacitor, alignment film and adhesive material. There is a gap of about 0.3-0.6mm between the backlight module 7 and the liquid crystal module 5, but they are connected by compressible buffer foam. The backlight module 7 is not in direct contact with the liquid crystal module 5, so as to avoid the rigid backlight module 7 squeezing the liquid crystal module 5 and causing poor display. The backlight back panel 8 connects the backlight module 7 with the cover layer through the structural adhesive 6 and the glass cover plate 2 or the glass cover plate 2 + touch module 3, thereby forming a closed space inside the display screen, isolating water and oxygen, and playing a protective role. In the manufacturing process, the air in all gaps will be removed by vacuuming before sealing and bonding to avoid air causing light reflection and light loss.

[0061] refer to Figure 6 , Figure 6 It is a schematic diagram of the backlight module structure of the full-laminated touch display screen of the present invention.

[0062] The specific structure of the backlight module 7 is composed of a rigid backlight backplane 8 made of die-cast alloy material to provide structural support for the backlight module 7. The backlight module is composed of a backlight frame glue 71, a multi-layer structure double brightness enhancement film 72, a brightness enhancement film 73, a diffusion film 74, a diffusion plate 75, an LED light board 76, a reflective plate 77, a thermal conductive double-sided adhesive 78 and a pressure-sensitive adhesive 7X. The backlight frame glue 71 is used to fix and protect the various layers of materials in the backlight module 7, and the various layers of film materials are also bonded by a pressure-sensitive adhesive 7X. The multi-layer structure double brightness enhancement film 72 and the brightness enhancement film 73 are used to enhance the backlight brightness and improve the viewing angle, the diffusion film 74 and the diffusion plate 75 are used to make the light diffuse evenly, and the reflective plate 77 is used to reflect the leaked light to improve the light utilization efficiency. A thermal conductive double-sided adhesive is attached to the back of the LED light board 76 for heat dissipation of the LED lamp beads, and the thermal conductive double-sided adhesive 78 also serves as a connecting adhesive between the backlight module 7 and the backlight backplane 8.

[0063] refer to Figure 7 , Figure 7 This is a complete diagram of the fully laminated touch display screen of the present invention based on a fully laminated structure.

[0064] like Figure 7 As shown, the optical film 1 is bonded to the glass cover plate 2 by coating or film bonding, the touch module 3 is coupled to the glass cover plate 2 as a whole, and the glass cover plate 2 is bonded to the display module (liquid crystal module 5+backlight module 7) by OCA optical adhesive 4. The backlight module 7 and the backlight back plate 8 are connected by thermal conductive double-sided adhesive 78, and the backlight back plate 8 and the glass cover plate 2 are connected by structural adhesive 6. Therefore, the structural parts 1-8 form a fully bonded component with an integrated structure by bonding. The PCBA control card 10, the shielding cover 9, and the mounting bracket 11 are connected to the backlight back plate 8 by screws 13, and the rear shell 12 is connected to the mounting bracket 11 and the backlight back plate 8 by buckles 14 and screws 13. Since the backlight bracket is reduced, the rear shell 12 is directly installed on the backlight back plate 8 by using buckles 14 and edge tube groove structures, which has the advantages of compact structure and a small number of structural parts, and the cost is also reduced.

[0065] refer to Figure 8 , Figure 8 It is a schematic diagram of the backlight back panel structure of the full-laminated touch display screen of the present invention.

[0066] like Figure 8As shown, the rigid backlight backplane 8 made of die-cast alloy provides structural support for the backlight module 7. At the same time, the backlight backplane 8 is connected to the glass cover plate 2 through the structural adhesive 6, and the glass cover plate 2 is connected to the display module through the OCA optical adhesive 4. The rigid structure of the backlight backplane 8 is not easy to deform when it is squeezed by the rear shell 12, the mounting bracket 11, the shielding cover 9, the PCBA control card 10 and other structural parts, thereby reducing the squeezing of the display module. Since the backlight backplane 8 in this embodiment is connected to multiple components such as the backlight module 7, the glass cover plate 2, the shielding cover 9, the PCBA control card 10, the mounting bracket 11, and the rear shell 12 (multiple screw holes 8-2 are provided on the backlight backplane 8), the structural strength requirements are high. In order to improve the structural strength of the backlight backplane 8, multiple reinforcing ribs 8-1 are provided on the backlight backplane 8, and the die-cast alloy material is used to prevent the backlight backplane 8 from deforming under the connection force of multiple components. In addition, the backlight back plate 8 made of die-cast alloy, the shielding cover 9 made of sheet metal and the mounting bracket 11 made of die-cast alloy are beneficial to the heat dissipation of the display screen and improve the service life of the display screen.

[0067] refer to Fig. 9 , Fig. 9 The figure is a process flow chart of the fully laminated touch display screen of the present invention.

[0068] The process of the fully bonded display screen in this embodiment is as follows: Fig. 9 As shown, the specific steps are:

[0069] Step 1: The glass cover plate 2 does not contain a touch layer: the glass cover plate 2 is cleaned and bonded with the OCA optical glue 4 and the material is inspected; the glass cover plate 2 contains a touch layer: the glass cover plate 2 is bonded with the touch layer through the OCA optical glue 4 or a touch circuit is made on the glass cover plate 2 through a yellow light process, and the OCA optical glue 4 is bonded after cutting and the material is inspected;

[0070] Step 2: After testing, align the TFT-LCD module with the glass cover plate 2, and then bond it with OCA optical glue 4, cover it with a layer of process film, degas, cure, and place it for 24 hours. Stick a protective film on the surface of the cover plate, bond the TFT-LCD module with the flexible circuit board assembly with ACF glue, and bond it with PCBA with double-sided tape to form a FOG module;

[0071] Step 3: Lay compressible buffer foam around the edges of the polarizer at the bottom of the FOG module, and then laminator the FOG module and backlight assembly in a vacuum environment for vacuum degassing.

[0072] Step 4: Attach double-sided tape to the back of the LED light board 76 at the bottom of the backlight assembly, and then attach the backlight alloy bracket, and perform vacuum degassing treatment;

[0073] Step 5: Apply PUR glue around the backlight alloy bracket, and then vacuum-bond it with the cover layer, then maintain pressure, cure, vacuum degas, and let it stand for 24 hours;

[0074] Step 6: Assemble the front shell, the mounting bracket, and the rear shell 12 structural parts in sequence by means of screws 13, buckles 14, and double-sided tape, and finally conduct a finished product test.

[0075] The present invention further provides a display device, which includes the fully laminated touch display screen.

[0076] The specific structure of the display device refers to the above embodiments. Since the display device adopts all the technical solutions of all the above embodiments, it at least has all the beneficial effects brought by the technical solutions of the above embodiments, which will not be described one by one here.

[0077] 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.

[0078] Obviously, the described embodiments are only some embodiments of the present invention, not all 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.

[0079] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back, etc.) 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.

[0080] In addition, the descriptions of "first", "second", etc. in the present invention are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. 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.

Claims

1. A fully laminated touch display screen, characterized in that: It includes a glass cover plate, a liquid crystal module and a backlight module which are laminated in sequence; The first side of the glass cover plate is connected to the first side of the liquid crystal module through OCA optical adhesive, and there is no gap between the glass cover plate and the liquid crystal module; The second side of the liquid crystal module is connected to the backlight module through a buffer layer, the liquid crystal module has no direct contact with the backlight module, and a structural adhesive is arranged between the gap between the glass cover plate and the backlight module.

2. The fully laminated touch display screen according to claim 1, characterized in that: The fully laminated touch display screen also includes: Touch module and backlight backplane; The first side of the touch module is connected to the first side of the glass cover plate, and the second side of the touch module is connected to the first side of the liquid crystal module; The first side of the backlight back plate is connected to the second side of the backlight module.

3. The fully laminated touch display screen according to claim 2, characterized in that: The glass cover plate is connected to the touch control module and the backlight back plate respectively through PUR glue.

4. The fully laminated touch display screen according to claim 3, characterized in that: The backlight module includes: Backlight frame glue, multi-layer dual brightness enhancement film, brightness enhancement film, diffusion film, diffusion plate, LED light board, reflection plate, thermal conductive double-sided adhesive and pressure-sensitive adhesive are stacked in sequence; The first side of the backlight frame adhesive is connected to the second side of the liquid crystal module, and the second side of the pressure-sensitive adhesive is connected to the first side of the backlight back plate.

5. The fully laminated touch display screen according to claim 4, characterized in that: The liquid crystal module comprises: The upper polarizer, the pressure-sensitive adhesive, the liquid crystal assembly, the lower polarizer and the flexible printed circuit board are stacked in sequence; The first side of the upper polarizer is connected to the second side of the touch module, and the second side of the flexible printed circuit board is connected to the first side of the backlight module.

6. The fully laminated touch display screen according to claim 5, characterized in that: The liquid crystal module also includes: TFT-LCD modules and flexible circuit board sets; The first side of the TFT-LCD module is connected to the second side of the flexible circuit board assembly, and the second side of the TFT-LCD module is connected to the first side of the backlight module; The first side of the flexible circuit board assembly is connected to the first side of the glass cover plate.

7. The fully laminated touch display screen according to claim 6, characterized in that: The TFT-LCD module comprises: Color filters, liquid crystal molecules, thin film transistors, glass, electrodes, capacitors, alignment films and supporting materials are stacked in sequence; The first side of the color filter is connected to the second side of the flexible circuit board assembly, and the second side of the supporting material is connected to the first side of the backlight module.

8. The fully laminated touch display screen according to claim 7, characterized in that: The buffer gap between the liquid crystal module and the backlight module is 0.3 mm to 0.6 mm.

9. The fully laminated touch display screen according to claim 8, characterized in that: The thickness of the buffer layer is 0.15 mm to 0.25 mm.

10. A display device, characterized in that: A fully laminated touch display screen comprising any one of claims 1 to 9.

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