Abstract:
A discharge electrode structure of a plasma display panel is described. The discharge electrode structure includes a plurality of expanding electrodes or expanding portions that each one has a symmetric structure. The expanding electrodes are alternately coupled to a pair of conductive electrodes that are on the edge of a plurality of luminant cells in one row. Therefore, oblique symmetric electrodes are disposed at opposite corner location of each luminant cell.
Abstract:
The present invention disclosed a preparation method of parylene AF4, which provides a reactant and a reducing agent with the use of catalyst or exposure to UV light with photo-initiator, to shorten the reaction time as a result of minimized the byproduct(s) formation, and obtain high purity (>99.0%) of parylene AF4 product under high concentrated reaction mixture.
Abstract:
A decoration film including a substrate, a releasing layer, at least an alignment mark and a pattern layer is provided. A substrate has a surface. The releasing layer is disposed on the surface of the substrate. The alignment mark is disposed on the surface of the substrate or a side of the releasing layer far from the substrate. The pattern layer is disposed on the releasing layer at a side far from the substrate in the correspondence with the alignment mark.
Abstract:
A substrate with a multi-domain vertical alignment pixel structure is provided. The substrate is opposite to a counter substrate with a common electrode, and a liquid crystal layer is disposed between the substrate and the counter substrate. The substrate includes a scan line and a data line, an active device, first and second patterned pixel electrodes and a voltage drop layer. Wherein, the first patterned pixel electrode provides a first electrical field to the liquid crystal layer, and the second patterned pixel electrode provides a second electrical field to the liquid crystal layer. The voltage drop layer makes the first electrical field smaller than the second electrical field.
Abstract:
A display includes pixels, each pixel including a first display region and a second display region. A controller controls driving of the first and second display regions of each pixel to set the gray scale levels of the first and second display regions based on an overall gray scale level to be shown by the pixel. The controller sets the gray scale level of the second display region independently of the gray scale level of the first display region.
Abstract:
A method and an apparatus for improving the gray-scale linearity of a plasma display. At least two types of gray-scale allocations are mixed for forming the original gray scale, or different gray scales are mixed to derive the original gray scale, so as to obtain the required brightness. Therefore, by using multiple combinations to adjust the original gray scale, the required brightness is obtained, and the gray scale linearity for all the gray scales is improved.
Abstract:
A display device including a display portion and a peripheral circuit portion is provided. The display portion includes a plurality of electrodes, and the peripheral circuit portion includes a plurality of bus electrodes and a plurality of traces. One end of each of the plurality of bus electrodes is electrically connected to a portion of the plurality of electrodes, and the other end of each of the plurality of bus electrodes is electrically connected to at least one of the plurality of traces, so as to reduce the problem due to crowded current on one of the plurality of traces and prevent the cracking on the panel during signal transmission to the plurality of electrodes by the plurality of traces.
Abstract:
A method for the synthesis of TFPX (α,α,α′,α′-tetrafluoro-p-xylene) is disclosed, which comprises the following steps: (a) providing a sulpholane solution comprising TCPX (α,α,α′,α′-tetrachloro-p-xylene); (b) mixing the sulpholane solution with alkali metal fluoride, and phase transfer catalyst to form a mixture, wherein the phase transfer catalyst is quaternary phosphonium salt; and (c) heating the mixture.
Abstract:
A method of synthesizing a high purity product of α,α,α′,α′-tetrachloro-p-xylene is disclosed. The method includes carrying out a first stage reaction of terephthaldicarboxaldehyde with a mixture of SOCl2 and dimethylformamide (DMF) to obtain a product mixture containing α,α,α′,α′-tetrachloro-p-xylene as a major product and 4-dichloromethyl benzaldehyde as a side product; adding SOCl2 and DMF to the product mixture of the first stage reaction to undergo a second stage reaction; and to a cool water adding the resulting product mixture from the second stage reaction to obtain a solid product of α,α,α′,α′-tetrachloro-p-xylene with a purity of 90-99 mol %.
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.