Touch display module

Abstract

The utility model belongs to touch -control display technical field, concretely is a kind of touch -control display module, at least includes: touch module: the touch module is flexible touch module, at least including upper touch electrode, lower touch electrode and first laminating adhesive;Black frame is set around the touch module, and the black frame is located on the upper surface or lower surface of upper touch electrode;The touch module contains FPC, and the touch chip and its peripheral circuit of the touch module are located on the T-CON board of display module, and FPC connects the T-CON board of display module;Second laminating adhesive: for laminating touch module and display module;Display module.The utility model has low process difficulty, high production efficiency, and can reach the requirement of traditional On-Cell structure touch light and thin.

Description

Technical Field

[0001] This utility model belongs to the field of touch display technology, specifically a touch display module. Background Technology

[0002] With the rapid development of mobile terminal devices (such as smartphones, tablets, and wearable devices), consumers' pursuit of device portability, battery life, and immersive experiences is endless. This directly drives the evolution of touch display modules (TDMs) towards ultra-thinness, ultra-lightness, and high screen-to-body ratio. The thinner and lighter modules not only reduce the overall thickness and weight of the device but also free up valuable space for other key components such as batteries, cameras, and cooling systems, making it one of the core ways to enhance the overall competitiveness of a product.

[0003] To achieve thinner and lighter designs, the industry has developed various technological approaches, but each has its own technological bottlenecks and inherent defects: (1) External touch solution (Out-Cell) The main technologies for add-on touch solutions include GFF (Glass-Film-Film), GF2 (Glass-Film-2), and OGS (One Glass Solution). The touch sensor is independent of the display panel. GFF / GF2 uses two or one layer of touch film bonded to the cover glass; OGS directly fabricates the touch sensor inside the cover glass, reducing the number of glass substrate layers. However, the presence of the glass component makes it difficult to guarantee the module's mechanical strength and long-term reliability under harsh tests such as drops, compression, bending, and thermal shocks.

[0004] (2) Embedded touch solution (In-Cell / On-Cell) Embedded touch solutions integrate touch functionality within the display panel. On-Cell fabricates the touch sensor on the color filter (CF) substrate or OLED encapsulation layer; In-Cell embeds the touch electrodes into the TFT array substrate or within the pixels. However, this requires significant modifications to mature display panel manufacturing processes to deeply integrate with touch technology. This results in low manufacturing yields, high costs, and extremely high technological barriers. Terminal manufacturers face significant limitations when selecting or changing panel suppliers.

[0005] How to reduce the thickness while ensuring the mechanical strength and long-term reliability of the module under harsh tests such as drop, extrusion, bending, and thermal shock is a huge engineering challenge.

[0006] Therefore, there is an urgent need in this field for an innovative touch display module architecture that can overcome the inherent limitations of the above-mentioned technical routes and achieve a revolutionary breakthrough in the thickness and weight of touch display modules without sacrificing performance, reliability and cost-effectiveness, so as to meet the demanding requirements of next-generation consumer electronics products. Utility Model Content

[0007] This utility model provides a touch display module with an FF structure, which can adopt a zero-bonding cover plate, frame-bonded cover plate or cover plate-free solution. It has the advantages of low process difficulty and high production efficiency, while achieving the requirements of thinness and lightness of traditional On-Cell structure touch display modules.

[0008] A touch display module with an FF structure, comprising at least: Touch module: The touch module is a flexible touch module, comprising at least an upper touch electrode, a lower touch electrode, and a first adhesive, with the first adhesive between the upper and lower touch electrodes; the upper touch electrode uses AG (Anti-Glare), AR (Anti-Reflection), AF (Anti-Fingerprint), a hardened base film, or a combination thereof, with a hardness of at least 1H; a black border is provided around the touch module, the black border being located on the upper or lower surface of the upper touch electrode; the touch module includes an FPC, and the touch chip and its peripheral circuits of the touch module are located on the T-CON board of the display module, with the FPC connected to the T-CON board of the display module; Second bonding adhesive: used for bonding touch modules and display modules; Display module.

[0009] The T-CON board connection arrangement of the display module adopts either a straight-line or back-folding type.

[0010] The T-CON board of a rear-folding screen is usually flat and folds together with the rest of the screen, while the logic board of a candybar screen protrudes and does not participate in the screen folding process.

[0011] The FF structure touch display module can adopt a coverless design, reducing the use of one cover layer and effectively reducing the thickness of the touch display module.

[0012] The touch module may also include a cover plate and a third adhesive for bonding the cover plate. The cover plate is a flexible cover plate, using an AG base film or a hardened base film with a hardness of at least 3H. The black border is located on the upper or lower surface of the cover plate. The total thickness of the touch module and the second adhesive does not exceed 0.65 mm.

[0013] The upper and lower touch electrodes of the touch module are bonded together in a face-to-face, face-to-back, back-to-face, or back-to-back manner. The face-to-face method means that the conductive surfaces of both the upper and lower touch electrodes face the first adhesive side. The face-to-back configuration means that the conductive surfaces of both the upper and lower touch electrodes face the display module. The back-to-back orientation means that the conductive surfaces of both the upper and lower touch electrodes face the opposite direction of the display module. The back-to-back configuration means that the non-conductive surfaces of both the upper and lower touch electrodes face the first adhesive side. Preferably, the upper and lower touch electrodes of the touch module are bonded face-to-face or face-to-back; when the upper and lower touch electrodes of the touch module are bonded back-to-back or back-to-face, the touch module further includes a cover plate and a third adhesive for bonding the cover plate.

[0014] The black border is formed by printing black ink or pasting black adhesive material. The width of the black border is 0.1-40mm. The thickness of the black border formed by black ink does not exceed 30μm, and the thickness of the black border formed by black adhesive material does not exceed 100μm.

[0015] The upper touch electrode includes a functionalized layer, and the functionalization methods include one or more of anti-glare, anti-fingerprint, anti-reflection, hardening, and anti-reflection. The functionalized layer is located on the non-conductive surface of the upper touch electrode.

[0016] The cover plate includes a functional layer, and the functionalization methods include one or more of anti-glare, anti-fingerprint, anti-reflection, hardening, and anti-reflection. The functional layer is located on the side of the flexible cover plate away from the display module.

[0017] The touch display module has a size of 1-150 inches.

[0018] The FF structure touch display module adopts a zero-bonding cover plate or frame-bonding cover plate solution. Preferably, the cover plate is a flexible cover plate, avoiding the use of glass cover plates, effectively reducing the risk of screen breakage and improving product lifespan.

[0019] The upper touch electrode includes an upper touch electrode substrate, an upper touch electrode conductive layer, and may include an upper touch electrode functionalized layer.

[0020] The lower touch electrode includes a lower touch electrode substrate and a lower touch electrode conductive layer.

[0021] The cover plate includes a cover plate substrate and may also include a cover plate functionalization layer.

[0022] The material of the substrate or cover plate includes one of polyester (PET), cyclic olefin polymer (COP), colorless polyimide (CPI), polypropylene (PP), polyethylene (PE), and triacetate cellulose (TAC). Optionally, the substrate includes a post-treatment base film, and the post-treatment methods include, but are not limited to, one or more of anti-reflective treatment, anti-reflective treatment, hardening treatment, and anti-glare treatment. The thickness of the substrate or cover plate is 10-300 μm.

[0023] The substrate or cover plate of the touch module is a flexible film. Preferably, the conductive layer of the upper touch electrode and the lower touch electrode is a transparent conductive film with silver nanowires or a composite transparent conductive film with silver nanowires.

[0024] The FF (Film-Film) structure of this utility model is an external touch technology that achieves touch functionality by superimposing two layers of touch-sensing film on the outside of the display module.

[0025] The adhesive used in this invention can be OCA optical adhesive, etc.

[0026] The system connection of a touch display module typically relies on a flexible printed circuit board (FPC). One end of the FPC is bonded to the substrate of the display panel or the traces of the touch sensor using anisotropic conductive adhesive (ACF), while the other end is connected to a timing controller board (T-CON). This FPC and T-CON configuration achieves higher space utilization, better structural stability, and lower overall cost while ensuring module performance and reliability.

[0027] The technical effects of this utility model are: 1. This utility model successfully reduces the overall thickness and weight of the touch display module by using an innovative flexible composite film to replace the traditional rigid substrate structure and optimizing the interlayer stacking design, which greatly satisfies the pursuit of thinness and lightness in touch devices.

[0028] 2. This utility model innovatively utilizes a black border pattern, which greatly enhances the light-blocking effect and effectively eliminates the visibility of the border setting.

[0029] 3. The core functional layer of this utility model uses a flexible membrane material, which gives the module a certain degree of bending ability and deformation adaptability, significantly reducing the bending radius and lowering the risk of damage due to stress concentration during assembly or daily use. At the same time, the natural properties of the flexible material, combined with the reinforced structural design, improve the module's drop resistance and impact resistance. Attached Figure Description

[0030] In the accompanying drawings, the same reference numerals represent the same or similar components. For ease of understanding, some components in the drawings are infinitely enlarged. The specific shapes in the drawings are unrelated to the actual shapes of the components and are only for identification and explanation. Obviously, those skilled in the art can obtain other drawings based on these drawings without any inventive effort.

[0031] Figure 1 This is a schematic diagram of the touch display module described in an embodiment of this application, wherein the T-CON board is arranged in a straight line.

[0032] Figure 2 This is a schematic diagram of the touch display module described in an embodiment of this application, wherein the T-CON board is arranged in a back-folding manner.

[0033] Figure 3 This is a schematic diagram showing the black border of this application located on the lower surface of the upper touch electrode.

[0034] Figure 4 This is a schematic diagram showing the black border of this application located on the upper surface of the cover plate.

[0035] Figure 5 This is a schematic diagram of the stacked structure of the touch display module in an embodiment of this application. The upper touch electrode and the lower touch electrode are bonded face to face.

[0036] Figure 6 This is a schematic diagram of the stacked structure of the touch display module in an embodiment of this application. The upper touch electrode and the lower touch electrode are bonded together face to back.

[0037] Figure 7 This is a schematic diagram of the stacked structure of the touch display module according to an embodiment of this application, including a cover plate, and the upper touch electrode and the lower touch electrode are attached face to face.

[0038] Figure 8 This is a schematic diagram of the stacked structure of the touch display module according to an embodiment of this application, including a cover plate, and the upper touch electrode and the lower touch electrode are attached face-to-back.

[0039] Figure 9 This is a schematic diagram of the stacked structure of the touch display module according to an embodiment of this application, including a cover plate, and the upper touch electrode and the lower touch electrode are bonded back to back.

[0040] Figure 10 This is a schematic diagram of the stacked structure of the touch display module according to an embodiment of this application, including a cover plate, and the upper touch electrode and the lower touch electrode are bonded back to back.

[0041] Figure label: 000 is the touch display module; 001 is the touch display module stacked structure; 102 is the FPC; 110 is the upper touch electrode, 111 is the upper touch electrode substrate, 112 is the upper touch electrode conductive layer, 113 is the upper touch electrode functionalization layer, 114 is the black border; 120 is the lower touch electrode, 121 is the lower touch electrode substrate, 122 is the lower touch electrode conductive layer; 131 is the first adhesive, 132 is the third adhesive; 200 is the second adhesive; 300 is the display module, 301 is the T-CON board; 140 is the cover plate, 141 is the cover plate substrate, 142 is the cover plate functionalization layer. Detailed Implementation

[0042] The following are examples of embodiments of this utility model. Those skilled in the art should understand that the listed embodiments are only some embodiments of this utility model and should not be regarded as specific limitations on this utility model.

[0043] Example 1 like Figure 1 As shown, a touch display module 000 includes a touch display stacked structure 001. The touch module includes an FPC 102, and the touch chip and its peripheral circuits of the touch module are located on the T-CON board 301 of the display module. The FPC 102 is connected to the T-CON board 301 of the display module. The T-CON board 301 of the display module is arranged in a straight line.

[0044] like Figure 5 The diagram shows a schematic of the stacked structure of a touch display module according to an embodiment of this application. The upper and lower touch electrodes are bonded face-to-face, meaning that both the upper touch electrode conductive layer 112 and the lower touch electrode conductive layer 122 face the first adhesive 131. From top to bottom, it includes: an upper touch electrode 110, comprising an upper touch electrode functionalized layer 113, an upper touch electrode substrate 111, an upper touch electrode conductive layer 112, and a black border 114 (e.g., ...). Figure 3 As shown, in Figure 5 (not shown in the image); first adhesive 131; lower touch electrode 120, including lower touch electrode conductive layer 122 and lower touch electrode substrate 121; second adhesive 200; display module 300.

[0045] Figure 6 This is a schematic diagram of the stacked structure of the touch display module according to an embodiment of this application. The upper touch electrode and the lower touch electrode are bonded together in a face-to-back manner, meaning that both the upper touch electrode conductive layer 112 and the lower touch electrode conductive layer 122 face the display module direction. From top to bottom, it includes: an upper touch electrode 110, including an upper touch electrode functionalization layer 113, an upper touch electrode substrate 111, an upper touch electrode conductive layer 112, and a black border 114 (e.g., ...). Figure 3 As shown, in Figure 6 (not shown in the image); first adhesive 131; lower touch electrode 120, including lower touch electrode substrate 121 and lower touch electrode conductive layer 122; second adhesive 200; display module 300.

[0046] The total thickness of the touch module and the second adhesive does not exceed 0.65 mm.

[0047] The black border is formed by printing black ink or pasting black adhesive material. The width of the black border is 0.1-40mm. The thickness of the black border formed by black ink does not exceed 30μm, and the thickness of the black border formed by black adhesive material does not exceed 100μm.

[0048] The functionalization of the upper touch electrode functional layer includes one or more of the following: anti-glare, anti-fingerprint, anti-reflection, hardening, and anti-reflection. The functional layer is located on the non-conductive surface of the upper touch electrode.

[0049] The touch display module has a size of 1-150 inches.

[0050] The FF structure touch display module adopts a coverless design, which reduces the use of one cover layer and can effectively reduce the thickness of the touch display module.

[0051] The T-CON board connection arrangement of the display module described in this embodiment can also adopt a back-folding type (such as...). Figure 2 (As shown).

[0052] Example 2 like Figure 2 As shown, a touch display module 000 includes a touch display stacked structure 001. The touch module includes an FPC 102, and the touch chip and its peripheral circuits of the touch module are located on the T-CON board 301 of the display module. The FPC 102 is connected to the T-CON board 301 of the display module. The T-CON board 301 of the display module is arranged in a back-folding manner.

[0053] like Figure 7 The diagram shows a stacked structure of a touch display module according to an embodiment of this application, including a cover plate, and upper and lower touch electrodes bonded together face-to-back. Stacked from top to bottom: cover plate 140, including a cover plate functionalization layer 142 and a cover plate substrate 141; third adhesive 132; upper touch electrode 110, including an upper touch electrode substrate 111, an upper touch electrode conductive layer 112, and a black border 114 (e.g., ...). Figure 3 As shown, Figure 7 (not shown in the image); first adhesive 131; lower touch electrode 120, including lower touch electrode conductive layer 122 and lower touch electrode substrate 121; second adhesive 200; display module 300.

[0054] Figure 8 This is a schematic diagram of the stacked structure of a touch display module according to an embodiment of this application, including a cover plate, and upper and lower touch electrodes are bonded together in a face-to-back manner. Stacked from top to bottom are: cover plate 140, including a cover plate functionalized layer 142 and a cover plate substrate 141; third adhesive 132; upper touch electrode 110, including an upper touch electrode substrate 111 and an upper touch electrode conductive layer 112; first adhesive 131; lower touch electrode 120, including a lower touch electrode substrate 121 and a lower touch electrode conductive layer 122; second adhesive 200; and display module 300.

[0055] Figure 9 This is a schematic diagram of the stacked structure of a touch display module according to an embodiment of this application, including a cover plate, and upper and lower touch electrodes bonded back to back. Stacked from top to bottom are: cover plate 140, including a cover plate functionalized layer 142 and a cover plate substrate 141; third adhesive 132; upper touch electrode 110, including an upper touch electrode conductive layer 112 and an upper touch electrode substrate 111; first adhesive 131; lower touch electrode 120, including a lower touch electrode conductive layer 122 and a lower touch electrode substrate 121; second adhesive 200; and display module 300.

[0056] Figure 10 This is a schematic diagram of the stacked structure of a touch display module according to an embodiment of this application, including a cover plate, and upper and lower touch electrodes bonded back-to-back. Stacked from top to bottom are: cover plate 140, including a cover plate functionalized layer 142 and a cover plate substrate 141; third adhesive 132; upper touch electrode 110, including an upper touch electrode conductive layer 112 and an upper touch electrode substrate 111; first adhesive 131; lower touch electrode 120, lower touch electrode substrate 121, including a lower touch electrode conductive layer 122; second adhesive 200; and display module 300.

[0057] The touch module includes a cover plate and a third adhesive for bonding the cover plate. The cover plate is a flexible cover plate, using an AG base film or a hardened base film with a hardness of at least 3H. The black border is located on the upper or lower surface of the cover plate (e.g., Figure 4 As shown, Figure 8-10 (Not shown in the image). The total thickness of the touch module and the second adhesive does not exceed 0.65 mm.

[0058] The black border is formed by printing black ink or pasting black adhesive material. The width of the black border is 0.1-40mm, the thickness of the black border formed by the black ink does not exceed 30μm, and the thickness of the black adhesive material does not exceed 100μm.

[0059] The touch module cover uses a functionalized film, and the functionalization methods include one or more of anti-glare, anti-fingerprint, anti-reflection, hardening, and anti-reflection. The functionalized layer is located on the side of the flexible cover away from the display module.

[0060] The touch display module has a size of 1-150 inches.

[0061] The T-CON board connection arrangement of the display module described in this embodiment can also adopt a back-folding type (such as...). Figure 1 (As shown).

[0062] For any content not described in detail in this utility model, conventional technical knowledge in the field can be used.

[0063] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to the embodiments, those skilled in the art should understand that modifications or equivalent substitutions to the technical solution of this utility model do not depart from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A touch display module, characterized in that, At least including: Touch module: The touch module is a flexible touch module, which includes at least an upper touch electrode, a lower touch electrode and a first adhesive. The touch module is surrounded by a black border, which is located on the upper or lower surface of the upper touch electrode; the touch module includes an FPC, and the touch chip and its peripheral circuits of the touch module are located on the T-CON board of the display module, with the FPC connected to the T-CON board of the display module; Second bonding adhesive: used for bonding touch modules and display modules; Display module.

2. The touch display module according to claim 1, characterized in that, The T-CON board connection arrangement of the display module adopts either a straight-line or back-folding type.

3. The touch display module according to claim 1, characterized in that, The touch module includes a cover plate and a third adhesive for bonding the cover plate. The cover plate is a flexible cover plate. When the cover plate is included, the black border is located on the upper or lower surface of the cover plate.

4. The touch display module according to claim 1, characterized in that, The total thickness of the touch module and the second adhesive does not exceed 0.65 mm.

5. The touch display module according to claim 1, characterized in that, The upper and lower touch electrodes of the touch module are bonded together in a face-to-face, face-to-back, back-to-face, or back-to-back manner. The face-to-face method means that the conductive surfaces of both the upper and lower touch electrodes face the first adhesive side. The face-to-back configuration means that the conductive surfaces of both the upper and lower touch electrodes face the display module. The back-to-back orientation means that the conductive surfaces of both the upper and lower touch electrodes face the opposite direction of the display module. The back-to-back configuration means that the non-conductive surfaces of both the upper and lower touch electrodes face the first adhesive side.

6. The touch display module according to claim 1, characterized in that, The black border is formed by printing black ink or pasting black adhesive material. The width of the black border is 0.1-40mm. The thickness of the black border formed by black ink does not exceed 30μm, and the thickness of the black border formed by black adhesive material does not exceed 100μm.

7. The touch display module according to claim 1, characterized in that, The upper touch electrode includes a functionalized layer, and the functionalization methods include one or more of anti-glare, anti-fingerprint, anti-reflection, hardening, and anti-reflection. The functionalized layer is located on the non-conductive surface of the upper touch electrode and its hardness is greater than 1H.

8. The touch display module according to claim 3, characterized in that, The cover plate includes a functional layer, and the functionalization methods include one or more of anti-glare, anti-fingerprint, anti-reflection, hardening, and anti-reflection. The functional layer is located on the side of the cover plate away from the display module, and its hardness is greater than 3H.

9. The touch display module according to any one of claims 1-8, characterized in that, The touch display module has a size of 1-150 inches.

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