KR200266547Y1 - Cassette for Aligning Ferroelectric Liquid Crystal - Google Patents

Abstract

The present invention relates to a ferroelectric liquid crystal alignment cassette capable of increasing mass productivity by applying voltage to a plurality of liquid crystal panels simultaneously.

The ferroelectric liquid crystal alignment cassette according to the present invention is provided with supports for supporting the upper plate and the lower plate, pedestals installed in a direction orthogonal to the supports and separating the space into a plurality of layers, loaded on the pedestals, and having a common voltage ( Vcom) liquid crystal panels provided with a pad for applying, a gate for applying a gate voltage, and a pad for applying a data voltage (Vdata) and separated by pedestals to simultaneously supply voltage to a plurality of stacked liquid crystal panels. And a voltage socket connected in parallel to one edge of each layer and corresponding to a common voltage (Vcom) supply pad, a gate voltage (Vgate) supply pad, and a data voltage (Vdata) supply pad of the liquid crystal panel. It features.

By such a configuration, mass productivity can be improved by applying voltage to a plurality of liquid crystal panels at the same time to make the liquid crystal alignment uniform.

Description

Cassette for Aligning Ferroelectric Liquid Crystal

The present invention relates to a ferroelectric liquid crystal alignment apparatus, and more particularly, to a ferroelectric liquid crystal alignment cassette that can increase the mass productivity by applying a voltage to a plurality of liquid crystal panels at the same time.

Typically, a liquid crystal display (hereinafter referred to as "LCD") controls a light in accordance with a liquid crystal array state to display a desired image on a screen.

Liquid crystals used in such LCDs are intermediate phases of liquids and solids having both fluidity and elasticity. During the thermodynamic phase transition of the liquid crystal, the liquid crystal of the Smectic C phase rotates while drawing an outline of a virtual cone along the smetic layer forming a layer structure of a region having the same electrical and magnetic properties.

The liquid crystal on the Smetic C phase has a characteristic of spontaneous polarization regardless of an external electric field, and the liquid crystal is called a ferroelectric liquid crystal display. FLC has a fast response time due to the spontaneous polarization characteristics, and has been actively studied for FLC because it can realize a wide viewing angle without using special electrode structures or compensation films.

1 is a diagram illustrating an alignment state of a ferroelectric liquid crystal display device.

Referring to FIG. 1, a ferroelectric liquid crystal display includes an upper substrate 1 on which a common electrode 3 and an alignment layer 5 are stacked, and a lower substrate on which a TFT array 9 and an alignment layer 7 including pixel electrodes are stacked. (11) and the liquid crystal 13 injected between the upper and lower substrates (1, 11).

The alignment layers 5 and 7 formed on the upper substrate 1 and the lower substrate 11 are oriented in the horizontal direction through rubbing. Subsequently, after the upper substrate 1 and the lower substrate 11 are bonded together, the liquid crystal 13 is injected at a temperature having an isotropic phase between the upper substrate 1 and the lower substrate 11. Thereafter, when the temperature is gradually lowered so that the liquid crystal 13 has a temperature having a nematic phase, the liquid crystal 13 is oriented parallel to the rubbing direction. In this state, the electric field is applied to the inside of the cell while gradually decreasing the temperature. Then, the liquid crystal 13 is arranged so that the direction of spontaneous polarization generated while phase shifting into the smetic phase coincides with the electric field direction formed inside the cell. Therefore, the liquid crystal 13 in the liquid crystal cell has a homogeneous alignment state by forming a molecular arrangement in the spontaneous polarization direction coinciding with the electric field direction among the two possible molecular alignment directions when the liquid crystal cell is parallelly aligned. The liquid crystals 13 thus injected are arranged to form a smectic layer forming a layer structure and to have a predetermined inclination with respect to a plane perpendicular to the smectic layer. The liquid crystal 13 has a predetermined inclination angle with respect to the horizontal alignment direction of the alignment film, and is aligned such that adjacent smectic layers have opposite polarities to each other.

Unlike the nematic liquid crystal, the ferroelectric liquid crystal forms a uniform orientation of two states only when a voltage is applied during liquid crystal injection. In order to apply a voltage to the liquid crystal panel, a voltage is applied to one liquid crystal panel using one ON / OFF jig. When a voltage is applied to a plurality of liquid crystal panels, a lot of time is consumed and productivity is reduced. That is, when it is to be applied to mass production, if a liquid crystal panel is oriented by applying a voltage to the liquid crystal panel one time at a time, it takes a long time, so there is a problem in mass productivity.

Accordingly, an object of the present invention is to provide a ferroelectric liquid crystal alignment cassette capable of increasing mass productivity by applying voltages to a plurality of liquid crystal panels at the same time to make liquid crystal alignment uniform.

1 is a view showing an alignment state of a ferroelectric liquid crystal.

2 is a view showing a ferroelectric liquid crystal alignment cassette according to an embodiment of the present invention.

3 is a plan view illustrating a cassette on which a liquid crystal panel shown in FIG. 2 is loaded;

4 is a plan view of the liquid crystal panel shown in FIG.

5 is an enlarged view of a portion "A" shown in FIG. 3;

<Explanation of symbols for the main parts of the drawings>

1, 22: upper substrate 3: common electrode

5, 7: alignment film 9: TFT array

11, 24: lower substrate 13: liquid crystal

20: liquid crystal panel 26: pad for applying data voltage

28: pad for applying gate voltage 30: pad for applying common voltage

40: upper plate 42: lower plate

46: support 48: stand

50: voltage socket 52: voltage application

In order to achieve the above object, the ferroelectric liquid crystal alignment cassette according to the present invention is a support for supporting the upper plate and the lower plate, pedestals and the pedestals are installed in a direction orthogonal to the support to separate the space into a plurality of layers, Supplying voltages simultaneously to the liquid crystal panels mounted on the substrate and having the common voltage (Vcom) applying pad, the gate voltage (Vgate) applying pad, and the data voltage (Vdata) applying pad, and the plurality of stacked liquid crystal panels. In order to be connected in parallel to one edge of each layer separated by pedestals and installed corresponding to the common voltage (Vcom) supply pad, the gate voltage (Vgate) supply pad and the data voltage (Vdata) supply pad of the liquid crystal panel It characterized in that it comprises a voltage socket.

Other objects and features of the present invention in addition to the above object will be apparent from the description of the embodiments with reference to the accompanying drawings.

Hereinafter, exemplary embodiments of the present invention will be described with reference to FIGS. 2 to 5.

2 and 3, the ferroelectric liquid crystal alignment cassette according to the embodiment of the present invention supports the upper plate 40 and the lower plate 42, 46 and the direction perpendicular to the support 46. And pedestals 48 formed to separate the space into a plurality of layers, and voltage applying units 52 formed at one edge of the pedestals 48.

Six support members 46 are installed between the upper plate 40 and the lower plate 42, and the pedestals 48 are constantly installed at predetermined intervals to provide a loading space for the liquid crystal panel 20 and the pedestals 48. The liquid crystal panel 20 is mounted on it.

As shown in FIG. 4, the liquid crystal panel 20 has a structure in which the upper substrate 22 and the lower substrate 24 face each other and are bonded to each other to apply a voltage to the liquid crystal panel at one edge of the lower substrate 24. A Vcom application pad 30, a gate voltage Vgate pad 28, and a data voltage Vdata application pad 26 are provided.

On the upper substrate 22, color filters separated and applied to each cell region by a black matrix and a common electrode are formed on the surface of the color filters. The lower substrate 24 has data lines to which a video signal is applied and gate lines to which a gate signal is applied cross each other, and a thin film transistor for switching liquid crystal cells at an intersection thereof, and a liquid crystal cell connected to the thin film transistor. A pixel electrode for driving is formed.

The upper and lower substrates 22 and 24 are bonded by the sealing material and inject ferroelectric liquid crystals through the liquid crystal injection holes 32 provided on the side parts of the liquid crystal panel.

A voltage for uniformly aligning the ferroelectric liquid crystal is applied to the common voltage Vcom applying pad 30, the gate voltage Vgate applying pad 28, and the data voltage Vdata applying pad 26. To this end, the voltage applying sections 52 are provided with a voltage socket 50 for supplying a voltage.

As shown in FIG. 5, the voltage sockets 50 are formed to have a structure that is elastic to facilitate contact with the voltage applying pads 26, 28, and 30 of the liquid crystal panel 20. These voltage sockets 50 are applied to the common voltage Vcom applying pad 30, the gate voltage Vgate applying pad 28, and the data voltage Vdata applying pad 26 formed in the liquid crystal panel. Each is installed correspondingly.

Three wires are provided outside the cassette, and each of them is supplied with a common voltage Vcom, a gate voltage Vgate, and a data voltage Vdata. These voltages are applied to the voltage sockets 50 installed on each layer separated by the pedestals 48, and the voltage sockets 50 are connected in parallel so that voltages are simultaneously applied to the plurality of liquid crystal panels. Accordingly, the ferroelectric liquid crystals injected into the plurality of liquid crystal panels are uniformly aligned at the same time. Here, the pad position of the liquid crystal panel and the position of the voltage socket 50 of the cassette may be changed in consideration of the convenience of the operation.

As described above, the ferroelectric liquid crystal alignment cassette according to the present invention loads a liquid crystal panel in a plurality of separate loading spaces and applies a voltage to a plurality of liquid crystal panels at the same time by placing a voltage applying unit for applying a voltage to one side of each loading space. Let's do it. Accordingly, the ferroelectric liquid crystals injected into the plurality of liquid crystal panels can be aligned at the same time. Therefore, the ferroelectric liquid crystal alignment cassette according to the present invention can apply voltage to a plurality of liquid crystal panels in a short time, thereby saving time and increasing productivity.

Those skilled in the art will appreciate that various changes and modifications can be made without departing from the technical spirit of the present invention. Therefore, the technical scope of the present invention should not be limited to the contents described in the detailed description of the specification but should be defined by the utility model registration claims.

Claims (1)

Supports 46 for supporting the upper plate 40 and the lower plate 42, Pedestals 48 installed in a direction perpendicular to the supports 46 to separate the space into a plurality of floors; A liquid crystal panel mounted on the pedestals 48 and provided with a pad 30 for applying a common voltage Vcom, a pad 28 for applying a gate voltage, and a pad 26 for applying a data voltage Vdata. 20) Pads for applying a common voltage Vcom of the liquid crystal panel are connected in parallel to one edge of each layer separated by the pedestals 48 to simultaneously supply voltage to the stacked plurality of liquid crystal panels 20. (30), a voltage socket (50) provided corresponding to a gate voltage (Vgate) applying pad (28) and a data voltage (Vdata) applying pad (26).