Search

CN-122018717-A - Integrated touch cover plate and preparation method and application thereof

CN122018717ACN 122018717 ACN122018717 ACN 122018717ACN-122018717-A

Abstract

The invention discloses an integrated touch cover plate and a preparation method thereof, the touch cover plate comprises a surface layer, a middle structure and an inner layer which are arranged in sequence, the surface layer and the inner layer respectively comprise resin and reinforcing materials arranged in the resin, the intermediate structure comprises a touch sensing film and an ink layer, and the ink layer is arranged between the surface layer and the touch sensing film. The integrated touch cover plate is formed by combining the prepreg sheets of the surface layer and the inner layer with the intermediate structure in a hot pressing and compounding way, so that the integrated touch cover plate is light and thin, integrated in touch function, high in mechanical performance, high in product consistency and reliability, strong in function expansibility and applicable to various electronic equipment.

Inventors

  • LV SHAOYU

Assignees

  • 厦门京嘉光电科技有限公司

Dates

Publication Date
20260512
Application Date
20251229

Claims (14)

  1. 1. The integrated touch cover plate is characterized by comprising a surface layer, an intermediate structure and an inner layer which are sequentially arranged, wherein the surface layer and the inner layer respectively comprise resin and reinforcing materials arranged in the resin, the intermediate structure comprises a touch sensing film and an ink layer, the ink layer is positioned between the surface layer and the touch sensing film, and the integrated touch cover plate is integrally formed by hot pressing and compounding of prepreg materials of the surface layer and the inner layer and the intermediate structure.
  2. 2. The integrated touch cover plate of claim 1, wherein the surface layer and the inner layer are made of epoxy resin-based semi-cured glass fiber plates, and the light transmittance is more than 90%.
  3. 3. The integrated touch cover plate of claim 1, wherein the intermediate structure further comprises an intermediate layer disposed between the touch sensing film and the ink layer, the intermediate layer comprising a resin and a reinforcing material disposed in the resin.
  4. 4. The integrated touch cover plate of claim 1, wherein the touch sensing film comprises a polymer substrate and a touch electrode layer arranged on the polymer substrate, a wiring layer is arranged on the periphery of the touch electrode layer, and the wiring layer is shielded by the ink layer.
  5. 5. The integrated touch cover plate of claim 4, wherein the wiring layer is provided with a connecting terminal, the connecting terminal is positioned on the surface of the touch sensing film, which is close to one side of the inner layer, and the inner layer is provided with an opening exposing the connecting terminal.
  6. 6. The integrated touch cover plate of claim 4, wherein the polymer substrate is PET or COP, and the touch electrode layer comprises ITO electrodes or nano-silver wire electrodes.
  7. 7. The integrated touch cover of claim 1, wherein the surface layer has a surface of a functional microstructure or the surface of the surface layer has a functional coating.
  8. 8. A method for manufacturing the integrated touch cover plate according to any one of claims 1 to 7, comprising: 1) Sequentially stacking a first semi-cured sheet for forming a surface layer, an intermediate structure comprising an ink layer and a touch sensing film, and a second semi-cured sheet for forming an inner layer to form a laminated layer; 2) The hot press compounding is performed in a vacuum environment, and the hot press at least comprises a first stage and a second stage in sequence, wherein at least one of the temperature and the pressure of the first stage is smaller than the temperature and the pressure of the second stage.
  9. 9. The method for manufacturing an integrated touch cover plate according to claim 8, wherein the ink layer is printed on the first semi-cured sheet or the touch sensing film, or The touch sensing device further comprises a third prepreg material used for forming an intermediate layer, the printing ink layer is printed on the third prepreg material, and in the step 1), the third prepreg material is stacked between the first half-cured sheet and the touch sensing film.
  10. 10. The method for manufacturing the integrated touch cover plate according to claim 8, wherein a connecting terminal is arranged on the surface of the touch sensing film, which is close to one side of the inner layer, in the step 1), an isolation layer is covered on the surface of the connecting terminal, and after the step 2), an opening is formed in the inner layer through a laser cutting process, and the isolation layer is removed through the opening to expose the connecting terminal.
  11. 11. The method of claim 8, wherein in step 1), the method further comprises a step of applying a resin adhesive solution on the surface of the stacked layers or the stacked layers by a dispensing process.
  12. 12. The method of claim 8, wherein the hot pressing temperature is lower than the heat-resistant temperature of the ink layer and the touch sensing film.
  13. 13. The method of claim 8, further comprising performing a surface treatment on the surface layer to form a functional microstructure or forming a functional coating on the surface of the surface layer.
  14. 14. An electronic device characterized by comprising the integrated touch cover plate according to any one of claims 1-7.

Description

Integrated touch cover plate and preparation method and application thereof Technical Field The invention belongs to the technical field of touch control, and particularly relates to an integrated touch control cover plate, and a preparation method and application thereof. Background Touch technology is used as a core mode of man-machine interaction and is widely applied to the consumer electronics fields of smart phones, tablet computers, electronic books and the like. The current mainstream touch technology is mainly capacitive, and high-sensitivity and multi-point touch operation is realized by detecting the change of the electric field of a human body. The touch cover plate is used as a core interaction interface of modern consumer electronic products, and the performance of the touch cover plate is directly related to user experience and equipment reliability. Currently, the touch cover plate is mostly designed in a multi-layer composite structure, glass or plastic is used as a supporting material, and functional elements such as the cover plate, a substrate containing the touch structure and the like are attached by relying on an OCA optical adhesive layer-by-layer attaching process. Although the process can realize basic functions, the introduction of the OCA adhesive layer easily causes concentration of attaching stress, increases interface stripping risk and influences structural stability. And the OCA adhesive layer can obviously increase the overall thickness and weight of the cover plate, which is contrary to the trend of thinning consumer electronics. In addition, conventional glass substrates, while having high hardness and excellent scratch resistance, have inherent brittleness and low fracture toughness resulting in insufficient impact resistance, and are problematic in terms of thickness and weight. While the common plastic base material can realize light weight, the hardness is usually insufficient, the wear resistance is poor, and the requirement of high-end equipment on durability is difficult to meet. The problems limit the improvement of the comprehensive performance of the touch cover plate. Disclosure of Invention Aiming at the defects of the prior art, the invention provides the integrated touch cover plate with high hardness, high light transmittance, excellent touch feeling and reliability, and the preparation method and the application thereof, so as to meet the advanced requirements of the consumer electronics field on light weight, durability and interactive experience. In order to achieve the above object, the technical scheme of the present invention is as follows: The integrated touch cover plate comprises a surface layer, a middle structure and an inner layer which are sequentially arranged, wherein the surface layer and the inner layer respectively comprise resin and reinforcing materials arranged in the resin, the middle structure comprises a touch sensing film and an ink layer, the ink layer is arranged between the surface layer and the touch sensing film, and the integrated touch cover plate is integrally formed by hot pressing and compounding of prepreg materials of the surface layer and the inner layer and the middle structure. Optionally, the prepreg of the surface layer and the inner layer is an epoxy resin-based prepreg glass fiber board, and the light transmittance is more than 90%. Optionally, the intermediate structure further comprises an intermediate layer, wherein the intermediate layer is arranged between the touch sensing film and the ink layer, and the intermediate layer comprises resin and reinforcing materials arranged in the resin. Optionally, the touch sensing film includes a polymer substrate and a touch electrode layer disposed on the polymer substrate, a wiring layer is disposed around the touch electrode layer, and the ink layer shields the wiring layer. Optionally, the wiring layer is provided with a connecting terminal, the connecting terminal is located on the surface of one side of the touch sensing film, which is close to the inner layer, and the inner layer is provided with an opening exposing the connecting terminal. Optionally, the polymer substrate is PET or COP, and the touch electrode layer comprises an ITO electrode or a nano silver wire electrode. Optionally, the facing has a surface of a functional microstructure, or the surface of the facing has a functional coating. The preparation method of the integrated touch cover plate comprises the following steps: 1) Sequentially stacking a first semi-cured sheet for forming a surface layer, an intermediate structure comprising an ink layer and a touch sensing film, and a second semi-cured sheet for forming an inner layer to form a laminated layer; 2) The hot press compounding is performed in a vacuum environment, and the hot press at least comprises a first stage and a second stage in sequence, wherein at least one of the temperature and the pressure of the first stage is smaller than the te