Flexible substrate and preparation method, qled device, flexible display device
A flexible substrate and bacterial cellulose film technology, applied in semiconductor devices, electrical components, circuits, etc., can solve problems such as uneven brightness, easy misalignment, and inconsistent latitude and longitude change rates, and achieve consistent latitude and longitude change rates and avoid displaying mura , the effect of strength enhancement
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[0060] In a second aspect, an embodiment of the present invention provides a method for preparing a flexible substrate, the method including the following steps:
[0061] Step 101, obtaining bacterial cellulose membrane.
[0062] Step 102, acetylating the bacterial cellulose membrane.
[0063] Step 103, obtaining resin slurry for preparing highly transparent resin.
[0064] Step 104: Mix the acetylated bacterial cellulose membrane with the resin slurry in a negative pressure environment and a light-proof environment, and let stand until the resin slurry fills the pores of the bacterial cellulose membrane to obtain a composite membrane.
[0065] Step 105, irradiating both sides of the composite film with ultraviolet light to cure the resin slurry to obtain a flexible substrate.
[0066] Wherein, the sequence of steps 101 and 103 is not required, for example, step 101 and step 102 can be performed sequentially, and then step 103 can be performed; or, step 103 can also be perfo...
Embodiment 1
[0104] This embodiment provides a flexible substrate, which uses bacterial cellulose film as a template matrix and polymethyl methacrylate as a reinforcement. The resin slurry used is: methyl methacrylate and benzoin dimethyl ether with a mass ratio of 95:5.
[0105] The flexible substrate is prepared by the following method:
[0106] Step a, using Acetobacter xylinum to grow bacterial cellulose membranes in the culture solution, and according to the refractive index of polymethyl methacrylate of 1.59, select bacterial cellulose membranes with a culture period of 18 days for purification. The purification process is as follows: soak the bacterial cellulose membrane in a sodium hydroxide solution with a mass concentration of 1%, stir it magnetically for 30 minutes, take out the bacterial cellulose membrane, wash it with deionized water until the pH is 7, and set aside. Solvent exchange is performed on the purified bacterial cellulose membrane to replace the solvent in the bact...
Embodiment 2
[0113] This embodiment provides a flexible substrate, which uses bacterial cellulose film as a template base and polycarbonate as a reinforcement.
[0114] The flexible substrate is prepared by the following method:
[0115] Step a, using Acetobacter xylinum to grow bacterial cellulose membranes in the culture solution, and according to the refractive index of polymethyl methacrylate of 1.59, select bacterial cellulose membranes with a culture period of 16 days for purification. The purification process is as follows: soak the bacterial cellulose membrane in a sodium hydroxide solution with a mass concentration of 1%, stir it magnetically for 30 minutes, take out the bacterial cellulose membrane, wash it with deionized water until the pH is 7, and set aside. Solvent exchange is performed on the purified bacterial cellulose membrane to replace the solvent in the bacterial cellulose membrane with ethanol to obtain the desired bacterial cellulose membrane.
[0116] Step b. Soak ...
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