KR20060058402A - Three dimensional image display - Google Patents

Abstract

The present invention relates to a three-dimensional display device and includes a display panel, a lenticular portion formed on the display panel, and a switching portion formed on the lenticular portion and including an upper electrode and a lower electrode. The present invention relates to a three-dimensional display device including a resistor connected between lower electrodes.

As described above, by connecting a resistance between the wiring connecting the upper electrode and the lower electrode of the switching unit, when the electrostatics are generated in the electrode in the test process, the static electricity is released so that an electric field is not generated between the electrodes of the switching unit so that accurate testing is possible. .

Lenticular, 3D, Stereoscopic, Display, Switching Unit, Resistance

Description

3D display device {THREE DIMENSIONAL IMAGE DISPLAY}

1 is a cross-sectional view of a 3D display device according to an exemplary embodiment of the present invention.

2A to 2C illustrate cross-sectional views of a switching unit of a 3D display device according to an exemplary embodiment of the present invention, and show movement of static electricity when static electricity is generated during a module test on a 2D display.

3 is a cross-sectional view illustrating in detail a switching unit of a 3D display device according to an exemplary embodiment of the present invention and a flexible printed circuit film FPC connected thereto.

4 is a plan view illustrating a portion of the lower substrate of the switching unit connected to the flexible printed circuit film (FPC) according to the embodiment of the present invention.

FIG. 5 is a plan view illustrating a portion of a lower substrate of a switching unit connected to a flexible printed circuit film (FPC) according to another exemplary embodiment of the present invention.

6 is a plan view illustrating a flexible printed circuit film (FPC) according to another embodiment of the present invention.

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

12: lower polarizer 22: upper polarizer

200: backlight unit 300: display panel

310: thin film transistor substrate 320: upper substrate                 

330: liquid crystal 340: color filter

400: lenticular portion 410: lenticular lens

420: polymer 430: lenticular portion lower substrate

440: lenticular portion upper substrate

500: switching unit 510: switching unit lower substrate

520: switching unit upper substrate 530: switching unit liquid crystal

540: seal member 550: switching unit lower electrode

560: switch upper electrode 570: switch connection line

580: pad

600: adhesive 700: flexible printed circuit film (FPC)

710: flexible printed circuit film (FPC) body 720: flexible printed circuit film (FPC) wiring

730: anisotropic conductive film

The present invention is an invention for a three-dimensional display device.

The services to be realized for the high speed of information based on the high-speed information communication network today are the multimedia service centered on the digital terminal which processes text, voice, and video at high speed from the simple listening and speaking service such as the current telephone. It is expected to develop and ultimately evolve into a super-spatial realistic 3D stereoscopic information communication service that can see, feel and enjoy realistic and three-dimensionally beyond time and space.

In general, three-dimensional images representing three-dimensional image is made by the principle of stereo vision through two eyes. The parallax of two eyes, that is, binocular disparity that appears because two eyes are about 65mm apart, is the most important factor of three-dimensional effect. This can be called. In other words, the left and right eyes each look at different two-dimensional images, and when these two images are transmitted to the brain through the retina, the brain accurately fuses each other to reproduce the depth and reality of the original three-dimensional image. This ability is commonly referred to as stereography.

The stereoscopic image display device uses binocular disparity, and according to whether the viewer wears separate glasses, stereoscopic polarization and time division, autostereoscopic parallax-barrier, lenticular and blinding There is a lighting (blinking light) method.

In the case of the spectacle polarization method, a large number of people can enjoy a stereoscopic image, and there is an advantage that the stereoscopic image can be enjoyed simply by wearing polarized glasses or liquid crystal shutter glasses at any position. However, due to the disadvantage of having to wear separate polarized glasses or liquid crystal shutter glasses, it is not used to enjoy stereoscopic images on a daily basis, and is only used in places such as movie theaters.

On the other hand, in the case of the non-glasses type, there is an advantage in that three-dimensional images can be enjoyed without wearing glasses separately, and developments are being made in various ways.                         

In the case of the non-glass type, a stereoscopic display device using a lenticular lens is most appropriately developed in consideration of the thickness and aperture ratio of the display device among various methods. That is, when the lenticular lens is used, the thickness of the display device may be thin, and the use of the lens does not cover the display device. However, in the case of non-glasses, there is a disadvantage in that the stereoscopic image can be viewed only at a certain distance and at a specific location.

Among non-stereoscopic three-dimensional display devices, display devices using lenticular lenses are currently being used and developed the most. A display device using a lenticular lens can be roughly divided into three parts: a display panel, a lenticular lens unit, and a switching unit.

In the conventional stereoscopic display device using a lenticular lens, when a test for a 2D display is performed in a module process, a normal test is not performed due to static electricity on the surface of the switching unit. This is because the static electricity generated when the test is performed in the floating state in which the circuit unit capable of controlling the voltage of the switching unit is not connected to the outside is formed and an electric field is formed to rotate the internal liquid crystal of the switching unit.

An object of the present invention is to provide a three-dimensional display device that can eliminate the problems caused by static electricity generated in the test process as described above.

In order to solve this problem, in the present invention, a resistance is formed between upper and lower substrates of the switching unit, thereby eliminating a problem caused by static electricity in the test process.

Specifically, the display panel includes a display unit, a lenticular unit formed on the display panel, and a switching unit formed on the lenticular unit and including an upper electrode and a lower electrode, between a wire connecting the upper electrode and the lower electrode. For a three-dimensional display device including a resistor inserted into and connecting both wires,

A display panel, a lenticular portion formed on the display panel, and a switching portion formed on the lenticular portion and including an upper electrode and a lower electrode, connected to the switching unit, and connected to the upper electrode and the lower electrode, respectively. It relates to a three-dimensional display device comprising a flexible printed circuit film comprising a resistor inserted between the wiring to connect both wiring,

A display panel, a lenticular portion formed on the display panel, and a switching portion formed on the lenticular portion and including an upper electrode and a lower electrode, connected to the switching unit, and connected to the upper electrode and the lower electrode, respectively. The present invention relates to a three-dimensional display device including a printed circuit board including a resistor inserted between two wires to connect both wires.

DETAILED DESCRIPTION Embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art may easily implement the present invention. As those skilled in the art would realize, the described embodiments may be modified in various different ways, all without departing from the spirit or scope of the present invention.                     

In the drawings, the thickness of layers, films, panels, regions, etc., are exaggerated for clarity. Like parts are designated by like reference numerals throughout the specification. When a part of a layer, film, region, plate, etc. is said to be "on" another part, this includes not only the other part being "right over" but also another part in the middle. On the contrary, when a part is "just above" another part, there is no other part in the middle.

Now, a 3D display device according to an exemplary embodiment of the present invention will be described in detail with reference to the accompanying drawings.

1 is a cross-sectional view of a stereoscopic display device capable of displaying a 3D stereoscopic image.

As shown in FIG. 1, the three-dimensional display device is divided into three parts: the display panel 300, the lenticular unit 400, and the switching unit 500. The stereoscopic display device becomes a stereoscopic display or a planar display depending on whether a voltage is applied to the switching unit 500.

In the stereoscopic display, the light emitted from the display panel 300 is refracted as it passes through the lenticular lens 410 and the polymer 420, and the traveling direction is diverted, and then passes through the switching unit 500 and the polarizing plate 22 to be incident to both eyes. Is done. At this time, the light entering the right eye and the light entering the left eye have different information from each other, so that the image is recognized in three dimensions.

The details of each part are as follows.

The display panel 300 includes a backlight unit 200. Since the liquid crystal 330 is a light receiving element, a backlight unit 200 for applying light is required. The light emitted from the backlight unit 200 is linearly polarized by the lower polarizer 12, and the display panel 300 changes the polarization state of the light polarized by the lower polarizer 12. At this time, the degree of change in the polarization state of light varies for each pixel.

The display panel 300 generally includes a thin film transistor substrate 310, an upper substrate 320, a liquid crystal 330, and a color filter 340.

The thin film transistor substrate 310 includes a pixel electrode for controlling the liquid crystal and a thin film transistor connected thereto, and the arrangement of the liquid crystal 330 varies according to a voltage applied to the pixel electrode.

Meanwhile, the upper substrate 320 generally has a black matrix and a common electrode, and the black matrix is formed to cover portions (such as thin film transistors) to be covered in the thin film transistor substrate 310, and the common electrode is formed with the pixel electrode. Together to form an electric field.

The color filter 340 is divided into an R (red), G (green), and B (blue) filter. The color filter 340 extracts each color component from the light passing through the liquid crystal 330 to display a color image. .

The lenticular portion 400 is attached to the display panel 300 using the adhesive 600.

The lenticular part 400 includes a lenticular lens 410 and a polymer 420, and includes an upper substrate 440 and a lower substrate 430 for supporting the lenticular lens 410. The lenticular lens 410 has refractive index anisotropy, and the polymer 420 has refractive index isotropy. The refractive index in the minor axis direction and the major axis direction of the lenticular lens 410 are different from each other, and any one of the refractive index in the minor axis direction and the major axis direction is formed to be the same as the refractive index of the polymer 420.

The switching unit 500 is attached to the lenticular unit 400 using the adhesive 600. The switching unit 500 includes a lower substrate 510 and an upper substrate 520, and a liquid crystal 530 is formed between the substrates. Switching electrodes (upper electrode 560 and lower electrode 550) are formed on the lower substrate 510 and the upper substrate 520, and a voltage is applied between the upper electrode 560 and the lower electrode 550. Is added to change the arrangement of the liquid crystals. In addition, a resistor 1000 is connected between the lower electrode 550 and the upper electrode 560. The resistor 1000 serves to discharge static electricity between the lower electrode 550 and the upper electrode 560 of the switching unit 500, and the resistor 1000 has a size of several tens of kilo ohms (KΩ). The resistor 1000 may be formed using a metal pattern or may be formed by inserting a resistor. When the resistor 1000 is formed using a metal pattern, the resistance is adjusted using a metal material, a thickness, a width, and a length of the metal layer.

The switching unit 500 is formed to have or not have an effect of a phase delay of 1/2 wavelength λ depending on whether voltage is applied.

An upper polarizer 22 is formed on the switching unit 500.

By using the above-described configuration, a stereoscopic image or a planar image may be viewed depending on whether a voltage is applied to the switching unit 500.                     

In FIG. 1, the adhesive 600 is used to attach each part. However, the upper substrate 320 of the display panel 300 and the lower substrate 430 of the lenticular portion 400 are different from each other. ) May be formed as one substrate, and the upper substrate 440 of the lenticular unit 400 and the lower substrate 510 of the switching unit 500 may be formed of one substrate.

2A to 2C sequentially illustrate that when the static electricity flows into the switching unit 500 during the test process, a current flows through the resistor 1000, and thus the potential difference due to static electricity disappears, and thus no electric field is formed in the liquid crystal layer. Drawing.

FIG. 2A illustrates a state of the switching unit 500 before the test process, and FIG. 2B illustrates a state in which static electricity flows into the switching unit 500 during the test process. In FIG. 2C, up and down through the resistor 1000 is illustrated. As the current flows between the electrodes 550 and 560, the potential difference due to static electricity disappears and the electric field is not formed between the upper electrode 560 and the lower electrode 550.

So far, the role of the resistor 1000 connected between the upper electrode 560 and the lower electrode 550 of the switching unit 500 has been described. Hereinafter, a position and a method of forming the resistor 1000 will be described.

3 is a cross-sectional view illustrating in detail a switching unit and a flexible printed circuit film FPC connected thereto according to an embodiment of the present invention, and FIG. 4 is a lower substrate of the switching unit according to an embodiment of the present invention. FIG. 5 is a plan view illustrating a portion connected to the flexible printed circuit film FPC, and FIG. 5 illustrates a portion connected to the flexible printed circuit film FPC among the lower substrates of the switching unit according to another exemplary embodiment of the present invention. 6 is a plan view illustrating a flexible printed circuit film (FPC) according to another embodiment of the present invention.

3 illustrates a cross section of the switching unit 500 of the 3D display device. As illustrated, the switching unit 500 includes a lower substrate 510 and an upper substrate 520, and electrodes 550 and 560 are formed below the upper substrate 520 and on the lower substrate 510. The liquid crystal 530 is formed between the electrodes 550 and 560. The upper substrate 520 and the lower substrate 510 are combined with a seal member 540, and the seal member 540 also serves to prevent liquid crystals from leaking out of the substrate.

The lower substrate 510 of the switching unit 500 is wider than the upper substrate 520 and has a portion to which the flexible printed circuit film 700 may be attached. In addition, a pad 580 connected to the wiring 720 of the flexible printed circuit film 700 is also formed on the lower substrate 510. The pads 580 are enlarged in width so as to be easily connected to the wiring 720 of the flexible printed circuit film 700. (See FIG. 4) Two pads 580 are formed. One of them is connected to the upper electrode 560, and the other is connected to the lower electrode 550. The pad 580 connected to the upper substrate 520 is connected to the upper electrode 560 through a connection line 570 formed along the seal member 540.

The lower substrate 510 and the flexible printed circuit film 700 are connected by an anisotropic conductive film 730. The anisotropic conductive film 730 contains conductive particles such that the pad 580 of the lower substrate 510 and the wiring 720 of the flexible printed circuit film 700 are electrically connected to each other.

Although not shown, a printed circuit board (PCB) is connected to the opposite side connected to the lower substrate 510 in the flexible printed circuit film 700. The printed circuit board (PCB) and the flexible printed circuit film 700 are switched by voltages applied to portions formed to apply or block voltages to the upper and lower electrodes 560 and 550 of the switching unit 500. The secondary liquid crystal 530 is rotated.

4 to 6 show embodiments according to the position at which the resistor is formed.

4 illustrates a portion of the pad 580 of the lower substrate 510 of the switching unit 500. One of the pads 580 illustrated in FIG. 4 is connected to the lower electrode 550, and the other is the upper electrode. 560 is connected. A resistor 1000 connecting two wires connected to the pad 580 is formed. The resistor 1000 is formed of the same material on the same layer as the wiring. The resistance value is formed to a desired resistance value by adjusting the width, thickness, and length of the resistor 1000. 5 illustrates an embodiment in which a length is formed to match a resistance value, and a resistance 1000 is formed in an overlapped 'd' shape.

6 illustrates a structure in which the resistor 1100 is inserted into the flexible printed circuit film 700. In the present exemplary embodiment, a resistance is not formed in the lower substrate 510 of the switching unit 500, and a resistance is formed between the wirings 720 of the flexible printed circuit film 700 connected to the lower substrate through the pad 580. It is an embodiment to form. In this embodiment, unlike the embodiment of FIGS. 4 and 5, the resistor 1100 is connected between the wires instead of forming a resistor through the wires. The resistance value of the resistor 1100 is several tens of kilo ohms (kΩ).                     

Meanwhile, an embodiment of a method of inserting and connecting a resistor between the wirings of the printed circuit board PCB connected to the flexible printed circuit film 700 is also possible.

In the embodiments shown in FIGS. 4 and 5, a method of inserting a resistor into the resistor 1000 between wirings is also possible.

Although the preferred embodiments of the present invention have been described in detail above, the scope of the present invention is not limited thereto, and various modifications and improvements of those skilled in the art using the basic concepts of the present invention defined in the following claims are also provided. It belongs to the scope of rights.

As described above, by connecting a resistance between the wiring connecting the upper electrode and the lower electrode of the switching unit, when the electrostatics are generated in the electrode in the test process, the static electricity is released so that an electric field is not generated between the electrodes of the switching unit so that accurate testing is possible. .

Claims (6)

Display panel, A lenticular portion formed on the display panel; Is formed on the lenticular portion, includes a switching unit including an upper electrode and a lower electrode, And a resistor connected between the upper electrode and the lower electrode. In claim 1, The resistor is formed of the same material on the same layer as the wiring, the three-dimensional display device to adjust the resistance value by using the thickness, width and length of the line forming the resistance. In claim 2, The resistor is a three-dimensional display device is formed in a '' 'overlapping shape. In claim 1, And the resistor is formed of a resistor having a predetermined resistance value. Display panel, A lenticular portion formed on the display panel; Is formed on the lenticular portion, includes a switching unit including an upper electrode and a lower electrode, And a flexible printed circuit film connected to the switching unit and including a resistor connecting the upper electrode and the lower electrode. Display panel, A lenticular portion formed on the display panel; Is formed on the lenticular portion, includes a switching unit including an upper electrode and a lower electrode, And a printed circuit board connected to the switching unit and including a resistor connecting the upper electrode and the lower electrode.

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