Samsung Electronics Co., Ltd.

Min-Young Won

Kun-Jong Lee

Jin-Whal Kim

Jong-Sung Bae

Youn-Ho Lee

In-Cheol Song

Chan-Hyang Lim

Jin-Soo Jung

Dae-Ho Choo

Won-hee Lee

Il-Ho Lee

Doo-Han Chung

Tai-Huem Om

Seung-Hee Her

Hyoo-Hak Nam

Beak-Keun Jeon

A heat treatment apparatus for manufacturing a liquid crystal display panel through an in-situ process includes a body and a hardening unit, an annealing unit, and a transferring unit disposed on the body. The hardening unit heats a sealing member within a liquid crystal display panel to harden the sealing member. The annealing unit anneals liquid crystal within the liquid crystal display panel sealed by the sealing member. The transferring unit transfers the liquid crystal display panel between the hardening unit and the annealing unit. Therefore, the sealing member may be hardened and the liquid crystal may be sealed through an in-situ process to enhance productivity.

Device for cooling LCD panel and heat treatment apparatus having the same

A display substrate includes a substrate, signal lines and test lines. The substrate includes a pixel region where pixels are disposed, a buffer region surrounding the pixel region and a grinding region surrounding the buffer region. The signal lines pass through the buffer region from the grinding region to provide the pixels with a driving signal. The test lines are disposed on the grinding region and the buffer region, respectively, so that the test lines intersect the signal lines in a lattice structure. Each of the test lines is electrically connected to the signal lines of a first number calculated by dividing a second number of the signal lines by a third number of the test lines. Thus, the performance of the pixels used for displaying an image may be tested more precisely.

Method of manufacturing a display substrate using a laser to remove test lines from the substrate without cutting the substrate

An inkjet method of printing an alignment layer is presented. The method entails depositing drops of an alignment liquid on a substrate while moving a plurality of inkjet heads and/or the substrate relative to each other to form a first dropping line on the substrate. The method also entails rotating a printing stage on which the substrate is mounted, and depositing drops of the alignment liquid on the substrate after forming the fist dropping line to form a second dropping line. Since the printing stage is elevated and rotated, the drops of the alignment liquid are easily deposited in a grid pattern to decrease the space between adjacent drops. If desired, drops may be skipped to avoid depositing the alignment liquid multiple times on the same location on the substrate. With this method, the planarization time of the alignment layers is shortened.

Inkjet method and apparatus for printing an alignment layer

A piezoelectric unit includes a first piezoelectric member having a tubular shape, a second piezoelectric member inserted into a first opening of the first piezoelectric member, and a voltage applying member applying a driving voltage to the first and second piezoelectric members. An orifice plate includes a body through which first nozzle openings corresponding to the first piezoelectric member and second nozzle openings corresponding to the second piezoelectric member are formed. An elastic member is disposed between the first and second nozzle openings and the piezoelectric unit. A shape of the elastic member is changed in accordance with a changed shape of the piezoelectric unit for jetting ink through the first and second nozzle openings. Thus, a nozzle pitch of a printer head may be reduced.

Cylindrical piezoelectric unit and printer head having the same

A visual inspection apparatus includes a plurality of cameras for photographing a display panel and a processor for processing the photographed image. Specifically, the visual inspection apparatus includes: a work table having a panel mounting unit on which a display panel is mounted; a camera module which is disposed in a direction normal to the panel mounting unit and which has a plurality of cameras arranged in a matrix; and a processor for processing the images of the display panel photographed with the cameras. The plurality of cameras is arranged in a matrix with variable distances between the cameras. Since the visual inspection apparatus includes the cameras arranged in a matrix, it can be used to effectively detect a variety of defects.

Visual inspection apparatus and method of inspecting display panel using the visual inspection apparatus

A method for eliminating a display defect in a liquid crystal display device includes disposing a liquid crystal panel adhered with a polarizer into a first buffer chamber, increasing pressure of the first buffer chamber, communicating the first buffer chamber with a reactor chamber having a predetermined pressure, transferring the liquid crystal panel from the first buffer chamber to the reactor chamber, increasing pressure of a second buffer chamber, communicating the second buffer chamber with the reactor chamber, and transferring the liquid crystal panel from the reactor chamber to the second buffer chamber.

Method and apparatus for eliminating a display defect in a liquid crystal display device

The glass substrate test apparatus of the liquid crystal cell process comprises a laser unit for generating a laser beam, a beam shaper and beam collimator for shaping the laser beam emitted from the laser unit so as to have an elongated cross section and parallelizing the shaped laser beam, a photo detector for detecting an intensity of double refraction of the shaped laser beam transmitted over the whole glass substrate, a phase defector for measuring the laser double refraction detected by the photo detector and comparing the measured double refraction with a standard laser double refraction, and a polarizer arranged between the laser unit and the beam shaper or between the beam shaper and the beam collimator for polarizing the laser beam to a parallel ray.

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Yongin-si, South Korea

Min-Young Won