Abstract:
A method and a device for purifying 1,4-bis(bromodifluoromethyl)benzene are disclosed. In order to solve the problem of hard to purify and separate 1,4-bis(bromodifluoromethyl)benzene crude products, diphenylmethane that has a higher boiling point and does not interact with 1,4-bis(bromodifluoromethyl)benzene is mixed with the 1,4-bis(bromodifluoromethyl)benzene crude products for evaporation. Afterwards, the purity of the vaporized product is detected and only that reaching an expected purity is collected to obtain high-purity 1,4-bis(bromodifluoromethyl)benzene.
Abstract:
A barrier rib structure of plasma display panel is disclosed. The barrier rib structure includes a plurality of vertical barrier ribs arranged in parallel, a plurality of first horizontal barrier ribs connected to one side of the vertical barrier ribs, and a plurality of second horizontal barrier ribs connected to the other side of the vertical barrier ribs, in which the first horizontal barrier ribs are disposed alternately with corresponding second horizontal barrier ribs for forming a plurality of double blockade structures. Additionally, a gas passage and a plurality of electrical discharge spaces are formed between the double blockade structures.
Abstract:
A method for transferring TCPX (α, α, α′, α′-tetrachloro-p-xylene) into TFPX (α, α, α′, α′-tetrafluoro-p-xylene) is disclosed, which comprises the following steps: (a) providing a first reactant comprising TFPX; (b) mixing the first reactant with alkali metal fluorides, TCPX and phase transfer catalyst(s) to form a mixture, wherein the alkali metal fluorides is KF, CsF, NaF, LiF or the combination thereof, the phase transfer catalyst(s) is quaternary ammonium salt, quaternary phosphonium salt or the combination thereof; and (c) heating the mixture.
Abstract:
An apparatus for driving an interlaced plasma display panel (PDP), including a delay device, an image upper and lower edge detection device, an image border processing device, an image processing and analog control loop. The delay device receives an image signal, delays the image signal for two fields and outputs the delayed image signal. The image upper and lower edge detection device receives and analyzes the image signal, outputs the image upper and lower edge positions, saves and provides the odd field upper and lower edge data of the image signal. The image border processing device outputs the image signal after border processing according to the delayed image signal, the image upper and lower edge positions, the odd field upper and lower data. The image processing and analog control loop outputs a driving signal according to the image signal after border processing and the image upper and lower edge positions.
Abstract:
An image processing method for plasma display panels is disclosed to measure the difference of displayed brightness, color temperature and color shift as a result of the voltage drop under various operation modes. The measured data are made into a lookup table installed in the circuit board so that the circuit board can automatic calibrate the image shown on the plasma display panel.
Abstract:
The present invention relates to a facile method of preparing 1,4-bis(chlorodifluoromethyl)benzene, comprising the steps of: (A) providing a reactant liquid of 1,4-bis(difluoromethyl)benzene; optionally (B) providing a light source for UV radiation; and (C) introducing chlorine gas into the reactant liquid at a temperature of 50-90° C. under a pressure above 1 atm to obtain 1,4-Bis(chlorodifluoromethyl)benzene. The invented facile method can be utilized in a batch process or a continuous process for effective production of 1,4-bis(chlorodifluoromethyl)benzene.
Abstract:
A data security protection method generates dynamic encryption keys and dynamic decryption keys for a host and a client during data transmission between the host and the client. The host stores a host initial key K0, and determines a host key Kn using a one-way hash function based on the host initial key K0. The client stores a client initial key K′0, and determines a client key K′n using the one-way hash function based on the client initial key K′0. Original data Rn is encrypted as encrypted data Xn using the host key Kn before being sent to the client. The client decrypts the encrypted data Xn using the client key K′n, to obtain the original data Rn.
Abstract:
The present invention provides a decorative film, a method for manufacturing thereof, and a decorative molding article. The decorative film includes a carrier layer, a release layer and a compound-material layer. The compound-material layer is compounded of at least two materials with different refractive index, thus the decorative film has a mat visible result of low glossy. The compound-material layer could be partially formed on the decorative film by using a shielding layer and an etching process. Thus, it has a visible result of glossy-bright-glossy. An ink layer with the manufacturing time could be omitted and cost is saved.
Abstract:
A fabrication method for discharge lamps is disclosed, which comprises providing a glass tube of diameter between 2 and 20 mm, the glass tube having an inner wall coated with a fluorescent phosphor and having a through-passage with a first end and a second end, connecting a first dielectric electrode to the first end of the glass tube by applying an adhesive to a contacted portion of the glass tube and the first dielectric electrode, and sintering the contacted portion of the glass tube and the first dielectric electrode to securely connect the glass tube and the first dielectric electrode. Subsequently, processes of filling and sealing are conducted to complete the fabrication of the discharge lamps.
Abstract:
The present invention provides a composite optical film as well as a decorated article comprising the same. The composite optical film comprises a substrate, a releasing layer, an optional durable layer, an ink layer, and an adhesive layer. The first surface of the substrate forms the first roughened configuration with an average roughness Ra of at least 0.5 μm. The releasing layer, whose second surface adheres to the first surface of the substrate, forms the second roughened configuration complementing the corresponding first configuration. Via the second roughened configuration and varying thickness of the releasing layer, the composite optical film generates glossy gradient effects.