KR101763932B1 - Stereoscopic image display device - Google Patents

Abstract

The present invention relates to a stereoscopic image display device including a touch screen. A stereoscopic image display apparatus of the present invention includes: a display panel including a pixel array; A touch screen formed on the display panel; And a lens / barrier cell disposed between the display panel and the touch screen, wherein the touch screen and the lens / barrier cell share a first shared substrate.

Description

[0001] STEREOSCOPIC IMAGE DISPLAY DEVICE [0002]

The present invention relates to a stereoscopic image display device including a touch screen.

The stereoscopic display is divided into a stereoscopic technique and an autostereoscopic technique. The binocular parallax method uses parallax images of right and left eyes with large stereoscopic effect, and both glasses and non-glasses are used, and both methods are practically used.

In the spectacle method, a stereoscopic image is implemented using polarized glasses or liquid crystal shutter glasses by displaying polarized light of right and left parallax images on a direct view type display device or a projector or in a time division manner. The non-eyeglass system generally has a parallax barrier system and a lenticular system.

2. Description of the Related Art In recent years, as stereoscopic image display devices have been increasingly used, a stereoscopic image display device including a touch screen has been demanded. A stereoscopic image display device including a touch screen has a problem in that the number of substrates increases due to the combination of the touch screen and the stereoscopic image display device, which increases the cost and difficulty in thinning.

When the touch screen is coupled to the stereoscopic image display device, electrical coupling occurs between the common electrode of the stereoscopic image display device and the touch sensors of the touch screen. The electrical coupling is affected by the parasitic capacitance C existing between the common electrode of the stereoscopic image display device and the touch sensors of the touch screen. The parasitic capacitance C is expressed by Equation (1).

In Equation (1), C denotes parasitic capacitance,

Is the dielectric constant, s is the area of the electrode, and d is the distance between the electrodes. Since the parasitic capacitance C is inversely proportional to the interelectrode distance d, the closer the interelectrode distance d is, the larger the parasitic capacitance C.

The larger the parasitic capacitance C, the greater the electrical coupling between the touch sensor and the common electrode. There arises a problem that the display image of the portion touched by the user is distorted due to the electrical coupling. As a result, it is necessary to design the stereoscopic image display device including the touch screen so as to minimize the electrical coupling in consideration of the distance between the common electrode and the touch sensor.

The present invention provides a stereoscopic image display device capable of being thinned and minimizing electrical coupling with a touch screen.

A stereoscopic image display apparatus of the present invention includes: a display panel including a pixel array; A touch screen formed on the display panel; And a lens / barrier cell disposed between the display panel and the touch screen, wherein the touch screen and the lens / barrier cell share a first shared substrate.

The present invention relates to a stereoscopic image display device including a touch screen, wherein a lens / barrier cell and a touch screen share one substrate, and a lens / barrier cell and a display panel are bonded using a transparent double-sided adhesive film. As a result, the present invention can reduce the number of substrates, reduce the cost, and make the display device thinner. Further, the present invention can eliminate the air layer existing between the lens / barrier cell and the touch screen, thereby improving the visibility.

The present invention places a lens / barrier cell between the touch screen and the display panel. As a result, the present invention can minimize the electrical coupling between the display panel and the touch screen.

1 is a cross-sectional view illustrating a stereoscopic image display device including a touch screen according to a first embodiment of the present invention.
FIG. 2 is a view showing a switchable barrier cell implementing a two-dimensional image.
FIG. 3 is a view showing a switchable barrier cell implementing a three-dimensional image.
4 is a cross-sectional view illustrating a stereoscopic image display device including a touch screen according to a second embodiment of the present invention.
5 is a view showing a switchable lens cell implementing a two-dimensional image.
6 is a view showing a switchable lens cell implementing a three-dimensional image.
7 is a cross-sectional view illustrating a stereoscopic image display device including a touch screen according to a third embodiment of the present invention.
8 is a view showing a lenticular lens cell implementing a three-dimensional image.
9 is a cross-sectional view illustrating a stereoscopic image display device including a touch screen according to a fourth embodiment of the present invention.
10 is a view showing a barrier film implementing a three-dimensional image.
11 is a cross-sectional view illustrating a stereoscopic image display device including a touch screen according to a fifth embodiment of the present invention.
12 is a cross-sectional view illustrating a stereoscopic image display device including a touch screen according to a sixth embodiment of the present invention.
13 is a cross-sectional view illustrating a stereoscopic image display device including a touch screen according to a seventh embodiment of the present invention.
14 is a cross-sectional view illustrating a stereoscopic image display device including a touch screen according to an eighth embodiment of the present invention.
15 is a cross-sectional view illustrating a stereoscopic image display device including a touch screen according to a ninth embodiment of the present invention.
16 is a cross-sectional view illustrating a stereoscopic image display device including a touch screen according to a tenth embodiment of the present invention.
17 is a cross-sectional view illustrating a stereoscopic image display device including a touch screen according to an eleventh embodiment of the present invention.
18 is a cross-sectional view illustrating a stereoscopic image display device including a touch screen according to a twelfth embodiment of the present invention.
19 is a cross-sectional view illustrating a stereoscopic image display device including a touch screen according to a thirteenth embodiment of the present invention.
20 is a cross-sectional view illustrating a stereoscopic image display device including a touch screen according to a fourteenth embodiment of the present invention.
FIG. 21 is a cross-sectional view illustrating a stereoscopic image display device including a touch screen according to a fifteenth embodiment of the present invention.
22 is a cross-sectional view illustrating a stereoscopic image display device including a touch screen according to a sixteenth embodiment of the present invention.
23 is a cross-sectional view illustrating a stereoscopic image display device including a touch screen according to a seventeenth embodiment of the present invention.
24 is a cross-sectional view illustrating a stereoscopic image display device including a touch screen according to an eighteenth embodiment of the present invention.
25 is a cross-sectional view illustrating a stereoscopic image display device including a touch screen according to a nineteenth embodiment of the present invention.
26 is a cross-sectional view illustrating a stereoscopic image display device including a touch screen according to a twentieth embodiment of the present invention.
27 is a cross-sectional view illustrating a stereoscopic image display device including a touch screen according to a twenty-first embodiment of the present invention.
28 is a cross-sectional view illustrating a stereoscopic image display device including a touch screen according to a twenty-second embodiment of the present invention.
29 is a cross-sectional view illustrating a stereoscopic image display device including a touch screen according to a twenty-third embodiment of the present invention.
30 is a cross-sectional view illustrating a stereoscopic image display device including a touch screen according to a twenty-fourth embodiment of the present invention.
31 is a block diagram showing a stereoscopic image display device including a touch screen implemented with the switchable barrier cell of FIG.
32 is a block diagram showing a stereoscopic image display device including a touch screen implemented by the lenticular lens cell of FIG.
33 is a sectional view showing a stereoscopic image display device in which a touch screen, a lens / barrier cell, and a display panel are bonded together by a sealant.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Reference will now be made in detail to the preferred embodiments of the present invention, examples of which are illustrated in the accompanying drawings. Like reference numerals throughout the specification denote substantially identical components. In the following description, a detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear.

The names of components used in the following description are selected in consideration of ease of specification, and may be different from actual product names.

The display panel 10 of the stereoscopic image display device of the present invention can be applied to a liquid crystal display (LCD), a field emission display (FED), a plasma display panel (PDP) A flat panel display device such as an organic light emitting diode (OLED) or an electrophoresis (EPD) device. It should be noted that although the present invention has been illustrated with the OLED display panel as an example in the following embodiments, it is not limited to the OLED display panel.

The lens / barrier cell of the present invention for implementing a three-dimensional image may be implemented with a switchable barrier cell 30, a switchable lens cell 40, a lenticular lens cell 50, and a barrier film 60 . A detailed description thereof will be given later in conjunction with the drawings.

The present invention can be used as a bonding member of the display panel 10 and the lens / barrier cell, such as an ultraviolet / thermal curable sealant 71 or a transparent double-sided adhesive film 72. A detailed description thereof will be described later.

The touch screen 20 of the present invention can be implemented by any known touch screen device. The touch screen 20 is classified into a resistance method, a capacitance method, a pressure method, an infrared method, and a surface ultrasonic method according to the operation principle.

The present invention shares a single substrate with the touch screen 20 and the lens / barrier cell. Hereinafter, the substrate shared by the touch screen 20 and the lens / barrier cell will be referred to as a "first shared substrate ". Further, the present invention can share one substrate with the display panel 10 and the lens / barrier cell. Hereinafter, the substrate shared by the display panel 10 and the lens / barrier cell will be referred to as a "second shared substrate ".

1, 4, 7, and 9, the touch sensors 21 are formed between the first shared substrate and the touch screen transparent substrate. 1, 4, 7, and 9, the display panel 10 and the lens / barrier cells are bonded together by the sealant 71. In Fig. The embodiments of FIGS. 1, 4 and 7 include first through fifth transparent substrates 101, 102, 103, 104, 105, and the embodiment of FIG. 9 includes first through third transparent substrates 101 , 102, 113).

1 is a sectional view showing a stereoscopic image display device including a touch screen 20 according to a first embodiment of the present invention. Referring to FIG. 1, the present invention includes a display panel 10, a touch screen 20, and a switchable barrier cell 30.

The display panel 10 includes first and second transparent substrates 101 and 102 facing each other. And a pixel array (11) comprising a plurality of pixels for displaying an image between the first and second transparent substrates (101, 102). In the pixel array 11, a plurality of pixels are formed in an active matrix form. Each of the pixels includes R, G, and B pixels. In the pixel array 11, there are data lines for supplying data voltages to a plurality of pixels, and there are scan lines for supplying scan pulses to a plurality of pixels. Each of the pixels receives the analog data signal from the data line when a gate signal is supplied to the gate line, and generates light corresponding to the data signal.

In order to display a three-dimensional image, each of the pixels is divided into RGB pixels (RGB _R ) of the right eye image displaying the right eye image and RGB pixels (RGB _L ) of the left eye image displaying the left eye image. The switchable barrier cell 30, and the switchable lens cell 40 switch the path of light in the two-dimensional image and the three-dimensional image. Thus, each of the pixels can be designed so that a two-dimensional image can be implemented.

A cathode electrode 12 is formed in the pixel array 11 of the OLED display panel 10 as shown in Fig. On the pixel array 11, organic / inorganic protective films for protecting organic materials of the pixel array 11 from moisture and air may be formed in multiple layers.

On the display panel 10, a touch screen 20 including a touch sensor 21 capable of detecting the presence or absence of a user's touch is formed. The touch screen 20 of the present invention can be implemented by any known touch screen type 20 device such as a resistive type, a capacitive type, a pressure type, an infrared type, and a surface ultrasonic type.

The touch screen 20 includes fourth and fifth transparent substrates 104 and 105 opposed to each other. The fourth transparent substrate 104 is a first shared substrate, and the touch sensors 21 to which a voltage is applied to recognize a user's touch are formed between the fourth and fifth transparent substrates 104 and 105.

The switchable barrier cell 30 is disposed between the display panel 10 and the touch screen 20. FIGS. 2 and 3 are views showing how the switchable barrier cell 30 realizes two-dimensional and three-dimensional images. 2 and 3, the switchable barrier cell 30 includes third and fourth transparent substrates 103 and 104, split electrodes 31A and 31B, a liquid crystal layer 32, a common electrode 33, And polarizing plates 34A and 34B.

The third and fourth transparent substrates 103 and 104 of the switchable barrier cell 30 are opposed to each other. The third and fourth transparent substrates 103 and 104 may be formed of glass or a film. On the third transparent substrate 103, a plurality of divided electrodes are patterned. In the fourth transparent substrate 104, the common electrode 33 is formed as a single film.

The switchable barrier cell 30 includes a liquid crystal layer 32 formed between the third and fourth transparent substrates 103 and 104. The liquid crystal molecules of the liquid crystal layer 32 are rotated by the voltage difference between the common electrode 33 and the divided electrodes 31A and 31B.

As shown in Fig. 2, in the two-dimensional image, the voltage difference does not substantially occur between the common electrode 33 and the divided electrodes 31A and 31B of the switchable barrier cell 30, so that the liquid crystal molecules do not rotate. Thus, the light passes through the liquid crystal layer 32 of the switchable barrier cell 30, and the user sees a two-dimensional image without parallax between the right and left eyes.

As shown in FIG. 3, in the three-dimensional image, a voltage difference is generated by voltages applied to the common electrode 33 and the divided electrodes 31A and 31B of the switchable barrier cell 30. The voltage difference between the voltage applied to the common electrode 33 and the voltage applied to the second (n is positive) electrodes 31B does not substantially occur, and therefore the liquid crystal molecules do not rotate. A voltage difference occurs between the voltage applied to the common electrode 33 and the second n-1 electrodes 31A. The liquid crystal between the common electrode 33 and the (2n-1) th electrodes 31A is rotated by 90 degrees.

The first polarizing plate 34A is attached to the third transparent substrate 103 of the switchable barrier cell 30. A second polarizing plate 34B, which intersects the first polarizing plate 34A, is attached to the fourth transparent substrate 104. [

The liquid crystal molecules existing between the common electrode 33 and the second n electrodes 31B do not rotate. In the region between the common electrode 33 and the second n-electrodes 31B, the light having passed through the first polarizing plate 34A can pass through the second polarizing plate 34B by changing the polarization characteristic.

The liquid crystal molecules existing between the common electrode 33 and the 2 < n > n-1 electrodes 31A rotate by 90 degrees. In the region between the common electrode 33 and the second n-1 electrodes 31A, the light having passed through the first polarizing plate 34A does not change its polarization characteristic, and thus can not pass through the second polarizing plate 34B. Therefore, a region between the common electrode 33 and the second n-1 electrodes 31A serves as a barrier for blocking light.

The light of the right image RGB (RGB _R ) travels to the right eye of the user and the light of the left image RGB (RGB _L ) travels to the right eye of the user due to the area blocking the light of the liquid crystal layer 32 in the switchable barrier cell 30. [ . Therefore, since the left and right eyes of the user can feel parallax, a three-dimensional image is realized.

In the present invention, the sealant 71 is used as a bonding material for bonding the display panel 10 and the switchable barrier cell 30. The sealant 71 may be either an ultraviolet curable sealant or a heat curable sealant.

4 is a view showing a second embodiment of the present invention. Referring to FIG. 4, the present invention includes a display panel 10, a touch screen 20, and a switchable lens cell 40. The touch screen 20 and the switchable lens cell 40 share the fourth transparent substrate 104 and the fourth transparent substrate 104 corresponds to the first shared substrate. The fifth transparent substrate 105 faces the fourth transparent substrate 104. The touch sensors 21 of the touch screen 20 are formed between the fourth and fifth transparent substrates 104 and 105.

A switchable lens cell 40 for implementing a three-dimensional image is disposed between the display panel 10 and the touch screen 20. FIGS. 5 and 6 are views showing how the switchable lens cell 40 realizes two-dimensional and three-dimensional images. 5 and 6, the switchable lens cell 40 includes third and fourth transparent substrates 103 and 104, a common electrode 43, split electrodes 41A and 41B, and a liquid crystal layer 42 ).

The third and fourth transparent substrates 103 and 104 of the switchable lens cell 40 are opposed to each other. The third and fourth transparent substrates 103 and 104 may be formed of glass or a film. On the third transparent substrate 103, a plurality of divided electrodes 41A and 41B are patterned. The divided electrodes 41A and 41B are formed in two layers and the lower divided electrodes 41A are located between the upper divided electrodes 41B. The interval between the split electrodes 41A and 41B is 4 mu m or more. An insulating film 44 is formed between the lower divided electrodes 41A and the upper divided electrodes 41B. The insulating film 44 prevents shorting between the lower divided electrodes 41A and the upper divided electrodes 41B. In the fourth transparent substrate 104, the common electrode 43 is formed as a single film.

The switchable lens cell 40 includes a liquid crystal layer 42 between the third and fourth transparent substrates 103 and 104. The liquid crystal molecules of the liquid crystal layer 42 are rotated by the voltage difference between the common electrode 43 and the divided electrodes 41A and 41B. The thickness of the liquid crystal layer 42 is determined by the back surface distance of the lens formed by the liquid crystal molecules when a voltage is applied to the switchable lens cell 40. When the thickness of the liquid crystal layer 42 is reduced, it is possible to reduce the amount of liquid crystal injected into the liquid crystal layer 42, thereby reducing the cost.

As shown in FIG. 5, in the two-dimensional image, the voltage difference does not substantially occur between the common electrode 43 and the divided electrodes 41A and 41B of the switchable lens cell 40, so that the liquid crystal molecules do not rotate. Accordingly, the light passes through the switchable lens cell 40 as it is without refraction, and the user sees a two-dimensional image having no parallax between the left and right eyes.

As shown in FIG. 6, in the three-dimensional image, a voltage difference is generated by a voltage applied to the common electrode 43 and the divided electrodes 41A and 41B of the switchable lens cell 40. The liquid crystal molecules are rotated by the generated voltage difference. In order to realize a three-dimensional image using the switchable lens cell 40, it is important how much voltage difference is given to the liquid crystal molecules to rotate the liquid crystal molecules to some extent. The switchable lens cell 40 is formed by calculating the optimum applied voltage of the liquid crystal molecules after determining the electrode width / interval of the lens in consideration of the rotation of the liquid crystal molecules. The voltage of the divided electrodes 41A and 41B gradually increases so that the voltage of the liquid crystal molecules located at the center of the lens is larger than the voltage of the liquid crystal molecules located at the edge of the lens.

6, in order to realize a three-dimensional image, the liquid crystal molecules of the switchable lens cell 40 are rotated by a voltage difference between voltages applied to the common electrode 43 and the divided electrodes 41A and 41B, respectively. The voltage applied to the common electrode 43 is constant but the voltages applied to the divided electrodes 41A and 41B are different from each other so that the liquid crystal molecules of the liquid crystal layer 42 have different voltage differences. As a result, the liquid crystal molecules are rotated to form a convex lens shape according to the voltage difference as shown in FIG. The light of the right image RGB (RGB _R ) is refracted into the right eye of the user by the liquid crystal layer 42 of the switchable lens cell 40 embodied as a convex lens. The light of the left image RGB (RGB _L ) is refracted to the left eye of the user by the liquid crystal layer 42 of the switchable lens cell 40 implemented in a convex lens form. Accordingly, since the left and right eyes of the user can feel the parallax, a three-dimensional image is realized.

7 is a view showing a third embodiment of the present invention. Referring to FIG. 7, the present invention includes a display panel 10, a touch screen 20, and a lenticular lens cell 50. The touch screen 20 and the lenticular lens cell 50 share the fourth transparent substrate 104 and the fourth transparent substrate 104 corresponds to the first shared substrate. The fifth transparent substrate 105 faces the fourth transparent substrate 104. The touch sensors 21 of the touch screen 20 are formed between the fourth and fifth transparent substrates 104 and 105.

The lenticular lens cell 50 is disposed between the display panel 10 and the touch screen 20. 8 is a view showing a lenticular lens cell 50. Fig. Referring to FIG. 8, the lenticular stereoscopic image display apparatus includes a lenticular lens 51 positioned between the display panel 10 and a user. The lenticular lens cell 50 can not switch the two-dimensional and three-dimensional images, and separates the right-eye image and the left-eye image to realize a three-dimensional stereoscopic image.

9 is a view showing a fourth embodiment of the present invention. Referring to FIG. 9, the present invention includes a display panel 10, a touch screen 20, and a barrier film 60. The barrier film 60 corresponds to the first shared substrate, and the third transparent substrate 113 is opposed to the barrier film 60. The touch sensors 21 of the touch screen 20 are formed between the barrier film 60 and the third transparent substrate 113.

The barrier film 60 is disposed between the display panel 10 and the touch screen 20. 10 is a view showing the barrier film 60. Fig. Referring to FIG. 10, the barrier film 60 selectively blocks light emitted from the display panel 10 using a barrier 61 partially blocking light. The barrier film 60 can not switch the two-dimensional image and the three-dimensional image, and realizes a three-dimensional stereoscopic image by dividing the left-eye image and the right-eye image.

11-14, the touch screen 20 and the lens / barrier cell share one substrate, and the touch sensors 21 are formed on the bottom surface of the first shared substrate opposite the lens / barrier cell. 11 to 14, the display panel 10 and the lens / barrier cell are bonded together by the sealant 71. [ 11 to 13 include first through fourth transparent substrates 121, 122, 123 and 124, and the embodiment of FIG. 14 includes first through third transparent substrates 121, 122, and 133 .

11 is a cross-sectional view illustrating a stereoscopic image display device including a touch screen 20 according to a fifth embodiment of the present invention. Referring to FIG. 11, the present invention includes a display panel 10, a touch screen 20, and a switchable barrier cell 30.

11, the touch screen 20 and the switchable barrier cell 30 share a fourth transparent substrate 124, and the fourth transparent substrate 124 corresponds to a first shared substrate. The touch sensors 21 are formed on the lower surface of the fourth transparent substrate 124 facing the switchable barrier cell 30 and the insulating film 80 covers the touch sensors 21.

12 is a sectional view showing a stereoscopic image display device including a touch screen 20 according to a sixth embodiment of the present invention. Referring to FIG. 12, the present invention includes a display panel 10, a touch screen 20, and a switchable lens cell 40.

12, the touch screen 20 and the switchable lens cell 40 share a fourth transparent substrate 124, and the fourth transparent substrate 124 corresponds to a first shared substrate. The touch sensors 21 are formed on the lower surface of the fourth transparent substrate 124 facing the switchable lens cell 40 and the insulating film 80 covers the touch sensors 21.

13 is a sectional view showing a stereoscopic image display device including a touch screen 20 according to a seventh embodiment of the present invention. Referring to FIG. 13, the present invention includes a display panel 10, a touch screen 20, and a lenticular lens cell 50.

13, the touch screen 20 and the lenticular lens cell 50 share a fourth transparent substrate 124, and the fourth transparent substrate 124 corresponds to a first shared substrate. The touch sensors 21 are formed on the lower surface of the fourth transparent substrate 124 facing the lenticular lens cell 50 and the insulating film 80 covers the touch sensors 21.

14 is a cross-sectional view illustrating a stereoscopic image display device including a touch screen 20 according to an eighth embodiment of the present invention. Referring to FIG. 14, the present invention includes a display panel 10, a touch screen 20, and a barrier film 60.

In Fig. 14, the third transparent substrate 133 corresponds to the first shared substrate. The touch sensors 21 are formed on the lower surface of the third transparent substrate 133 facing the barrier film 60 and the insulating film 80 covers the touch sensors 21.

15 to 18, the touch screen 20 and the lens / barrier cell share one substrate, and the touch sensors 21 are formed between the first shared substrate and the touch screen transparent substrate. 15 to 18, the display panel 10 and the lens / barrier cell are bonded by the transparent double-sided adhesive film 72. [ 15 to 17 include first through fifth transparent substrates 101, 102, 103, 104 and 105, and the embodiment of FIG. 18 includes first through third transparent substrates 101, 102, 113 ).

15 is a sectional view showing a stereoscopic image display device including a touch screen 20 according to a ninth embodiment of the present invention. Referring to FIG. 15, the present invention includes a display panel 10, a touch screen 20, and a switchable barrier cell 30.

In Fig. 15, the touch screen 20 and the switchable barrier cell 30 share a fourth transparent substrate 104, and the fourth transparent substrate 104 corresponds to a first shared substrate. The fifth transparent substrate 105 faces the fourth transparent substrate 104. The touch sensors 21 of the touch screen 20 are formed between the fourth and fifth transparent substrates 104 and 105.

As shown in Fig. 15, the transparent double-sided adhesive film 72 may be used as a bonding member in the present invention. The transparent both-side adhesive film 72 includes a film base, first and second adhesive layers, and first and second protective films.

The first adhesive layer is formed on the first adhesive surface of the film base. The first adhesive layer is protected by the first protective film. The second adhesive layer is formed on the second adhesive surface opposite to the first adhesive surface in the film base. The second adhesive layer is protected by the second protective film. The first adhesive layer is opposed to the lens / barrier cell, and the second adhesive layer is opposed to the display panel 10.

The bonding process of the transparent double-sided adhesive film (72) requires heat and pressure to be simultaneously applied to prevent air bubbles from being generated, and may be performed by a laminating process. The bonding process of the transparent double-sided adhesive film 72 is characterized by a low-temperature process of 70 ° C or more and 150 ° C or less due to the temperature characteristics of the liquid crystal of the switchable lens cell 40. The transparent double-sided adhesive film 72 can not be properly bonded at a temperature lower than 70 deg. C, and the liquid crystal is hardened at a temperature exceeding 150 deg. C, so that the switchable lens cell 40 can not operate properly. The pressure is the pressure normally applied during the laminating process by the self-weighting pressure of the roller.

As a joining step, a method of joining glass and glass with a frit glass is known. The frit glass is characterized by being a high-temperature process which is performed at a temperature of 400 ° C or higher. However, since the liquid crystal is cured at a temperature of 150 ° C or higher, the frit glass bonding process is impossible when the liquid crystal layer exists as the switchable barrier cell 30 and the switchable lens cell 40. In addition, the frit glass bonding process is disadvantageous in that it is performed at a higher temperature than the bonding process of the transparent double-sided adhesive film (72).

16 is a sectional view showing a stereoscopic image display device including a touch screen 20 according to a tenth embodiment of the present invention. Referring to FIG. 16, the present invention includes a display panel 10, a touch screen 20, and a switchable lens cell 40.

16, the touch screen 20 and the switchable lens cell 40 share a fourth transparent substrate 104, and the fourth transparent substrate 104 corresponds to a first shared substrate. The fifth transparent substrate 105 faces the fourth transparent substrate 104. The touch sensors 21 of the touch screen 20 are formed between the fourth and fifth transparent substrates 104 and 105.

17 is a view showing a stereoscopic image display device including a touch screen 20 according to an eleventh embodiment of the present invention. Referring to FIG. 17, the present invention includes a display panel 10, a touch screen 20, and a lenticular lens cell 50.

17, the touch screen 20 and the lenticular lens cell 50 share a fourth transparent substrate 104, and the fourth transparent substrate 104 corresponds to a first shared substrate. The fifth transparent substrate 105 faces the fourth transparent substrate 104. The touch sensors 21 of the touch screen 20 are formed between the fourth and fifth transparent substrates 104 and 105.

18 is a view showing a stereoscopic image display apparatus including a touch screen 20 according to a twelfth embodiment of the present invention. Referring to FIG. 18, the present invention includes a display panel 10, a touch screen 20, and a barrier film 60.

In Fig. 18, the barrier film 60 corresponds to the first shared substrate, and the third transparent substrate 113 is opposed to the barrier film 60. Fig. The touch sensors 21 of the touch screen 20 are formed between the barrier film 60 and the third transparent substrate 113.

19 to 22, the touch screen 20 and the lens / barrier cell share one substrate, and the touch sensors 21 are formed on the lower surface of the first shared substrate opposite to the lens / barrier cell. 19 to 22, the display panel 10 and the lens / barrier cell are bonded together by a transparent double-sided adhesive film 72. [ The embodiments of FIGS. 19 to 21 include first through fourth transparent substrates 121, 122, 123, 124, and the embodiment of FIG. 22 includes first through third transparent substrates 121, 122, 133 .

19 is a cross-sectional view illustrating a stereoscopic image display device including a touch screen 20 according to a thirteenth embodiment of the present invention. Referring to FIG. 19, the present invention includes a display panel 10, a touch screen 20, and a switchable barrier cell 30.

In Fig. 19, the touch screen 20 and the switchable barrier cell 30 share a fourth transparent substrate 124, and the fourth transparent substrate 124 corresponds to a first shared substrate. The touch sensors 21 are formed on the lower surface of the fourth transparent substrate 124 facing the switchable barrier cell 30 and the insulating film 80 covers the touch sensors 21.

20 is a cross-sectional view illustrating a stereoscopic image display device including a touch screen 20 according to a fourteenth embodiment of the present invention. Referring to FIG. 20, the present invention includes a display panel 10, a touch screen 20, and a switchable lens cell 40.

20, the touch screen 20 and the switchable lens cell 40 share a fourth transparent substrate 124, and the fourth transparent substrate 124 corresponds to a first shared substrate. The touch sensors 21 are formed on the lower surface of the fourth transparent substrate 124 facing the switchable lens cell 40 and the insulating film 80 covers the touch sensors 21.

21 is a sectional view showing a stereoscopic image display device including a touch screen 20 according to a fifteenth embodiment of the present invention. Referring to FIG. 21, the present invention includes a display panel 10, a touch screen 20, and a lenticular lens cell 50.

21, the touch screen 20 and the lenticular lens cell 50 share a fourth transparent substrate 124, and the fourth transparent substrate 124 corresponds to a first shared substrate. The touch sensors 21 are formed on the lower surface of the fourth transparent substrate 124 facing the lenticular lens cell 50 and the insulating film 80 covers the touch sensors 21.

22 is a sectional view showing a stereoscopic image display device including a touch screen 20 according to a sixteenth embodiment of the present invention. Referring to FIG. 22, the present invention includes a display panel 10, a touch screen 20, and a barrier film 60.

In Fig. 22, the third transparent substrate 133 corresponds to the first shared substrate. The touch sensors 21 are formed on the lower surface of the third transparent substrate 133 facing the barrier film 60 and the insulating film 80 covers the touch sensors 21. The transparent both-side adhesive film 72 bonds the display panel 10 and the barrier film 60 together.

23 to 26, the touch screen 20 and the lens / barrier cell share one substrate and are formed between the first shared substrate and the touch screen 20 transparent substrate. 23 to 26, the display panel 10 and the lens / barrier cell share another substrate, and the pixel array 11 of the display panel 10 and the lens / barrier cell are covered with a transparent both-side adhesive film 72 ). 23 to 25 include first to fourth transparent substrates 141, 142, 143 and 144, and the embodiment of FIG. 26 includes first and second transparent substrates 141 and 152 .

23 is a sectional view showing a stereoscopic image display device including a touch screen 20 according to a seventeenth embodiment of the present invention. Referring to FIG. 23, the present invention includes a display panel 10, a touch screen 20, and a switchable barrier cell 30.

23, the touch screen 20 and the switchable barrier cell 30 share a third transparent substrate 143, and the third transparent substrate 143 corresponds to a first shared substrate. The fourth transparent substrate 144 faces the third transparent substrate 143. The touch sensors 21 are formed between the third and fourth transparent substrates 143 and 144. The display panel 10 and the switchable barrier cell 30 share the second transparent substrate 142 and the second transparent substrate 142 corresponds to the second shared substrate.

The transparent double-sided adhesive film 72 bonds the pixel array 11 of the display panel 10 and the second transparent substrate 142 together. 23, the first polarizing plate 34A is attached to the second transparent substrate 142 so that the transparent double-sided adhesive film 72 is adhered to the pixel array (not shown) of the display panel 10 11 and the first polarizing plate 34A of the second transparent substrate 142 are bonded to each other.

As described with reference to FIG. 15, the bonding process of the transparent double-sided adhesive film 72 requires simultaneous heat and pressure to prevent bubbles from being generated, and may be performed by a laminating process. In addition, since the present embodiment shares two substrates, the number of substrates can be reduced, resulting in further cost reduction and further thinning.

24 is a cross-sectional view illustrating a stereoscopic image display device including a touch screen 20 according to an eighteenth embodiment of the present invention. Referring to FIG. 24, the present invention includes a display panel 10, a touch screen 20, and a switchable lens cell 40.

24, the touch screen 20 and the switchable lens cell 40 share a third transparent substrate 143, and the third transparent substrate 143 corresponds to a first shared substrate. The fourth transparent substrate 144 faces the third transparent substrate 143. The touch sensors 21 are formed between the third and fourth transparent substrates 143 and 144. The display panel 10 and the switchable lens cell 40 share the second transparent substrate 142 and the second transparent substrate 142 corresponds to the second shared substrate.

25 is a view showing a stereoscopic image display device including a touch screen 20 according to a nineteenth embodiment of the present invention. Referring to FIG. 25, the present invention includes a display panel 10, a touch screen 20, and a lenticular lens cell 50.

25, the touch screen 20 and the lenticular lens cell 50 share a third transparent substrate 143, and the third transparent substrate 143 corresponds to a first shared substrate. The fourth transparent substrate 144 faces the third transparent substrate 143. The touch sensors 21 are formed between the third and fourth transparent substrates 143 and 144. The display panel 10 and the lenticular lens cell 50 share the second transparent substrate 142 and the second transparent substrate 142 corresponds to the second shared substrate.

FIG. 26 is a view showing a stereoscopic image display device including a touch screen 20 according to a twentieth embodiment of the present invention. Referring to FIG. 26, the present invention includes a display panel 10, a touch screen 20, and a barrier film 60.

In Fig. 26, the second transparent substrate 152 is opposed to the barrier film 60. Fig. The touch sensors 21 are formed between the barrier film 60 and the second transparent substrate 152. The transparent double-sided adhesive film 72 bonds the pixel array 11 of the display panel 10 and the barrier film 60.

In FIGS. 27 to 30, the touch screen 20 and the lens / barrier cell share one substrate, and the touch sensors 21 are formed on the bottom surface of the first shared substrate opposite to the lens / barrier cell. 27 to 30, the display panel 10 and the lens / barrier cell share another substrate, and the pixel array 11 of the display panel 10 and the lens / barrier cell are covered with a transparent both-side adhesive film 72 ). The embodiments of Figs. 27-29 include first through third transparent substrates 161,162, and 163, and the embodiment of Fig. 30 includes first and second transparent substrates 161,172.

FIG. 27 is a cross-sectional view illustrating a stereoscopic image display device including a touch screen 20 according to a twenty-first embodiment of the present invention. Referring to FIG. 27, the present invention includes a display panel 10, a touch screen 20, and a switchable barrier cell 30.

27, the touch screen 20 and the switchable barrier cell 30 share a third transparent substrate 163, and the third transparent substrate 163 corresponds to a first shared substrate. The touch sensors 21 are formed on the lower surface of the third transparent substrate 163 facing the switchable barrier cell 30 and the insulating film 80 covers the touch sensors 21. The display panel 10 and the switchable barrier cell 30 share the second transparent substrate 162 and the second transparent substrate 162 corresponds to the second shared substrate.

28 is a sectional view showing a stereoscopic image display device including a touch screen 20 according to a twenty-second embodiment of the present invention. 28, the present invention includes a display panel 10, a touch screen 20, and a switchable lens cell 40.

28, the touch screen 20 and the switchable lens cell 40 share a third transparent substrate 163, and the third transparent substrate 163 corresponds to a first shared substrate. The touch sensors 21 are formed on the lower surface of the third transparent substrate 163 facing the switchable lens cell 40 and the insulating film 80 covers the touch sensors 21. The display panel 10 and the switchable lens cell 40 share the second transparent substrate 162 and the second transparent substrate 162 corresponds to the second shared substrate.

29 is a cross-sectional view illustrating a stereoscopic image display device including a touch screen 20 according to a twenty-third embodiment of the present invention. Referring to FIG. 29, the present invention includes a display panel 10, a touch screen 20, and a lenticular lens cell 50.

29, the touch screen 20 and the lenticular lens cell 50 share a third transparent substrate 163, and the third transparent substrate 163 corresponds to a first shared substrate. The touch sensors 21 are formed on the lower surface of the third transparent substrate 163 facing the lenticular lens cell 50 and the insulating film 80 covers the touch sensors 21. The display panel 10 and the lenticular lens cell 50 share the second transparent substrate 162 and the second transparent substrate 162 corresponds to the second shared substrate.

30 is a sectional view showing a stereoscopic image display device including a touch screen 20 according to a twenty-fourth embodiment of the present invention. Referring to FIG. 30, the present invention includes a display panel 10, a touch screen 20, and a barrier film 60.

30, the touch sensors 21 are formed on the lower surface of the second transparent substrate 172 facing the barrier film 60, and the insulating film 80 covers the touch sensors 21. The transparent double-sided adhesive film 72 bonds the pixel array 11 of the display panel 10 and the barrier film 60.

31 is a block diagram illustrating a stereoscopic image display device including a touch screen 20 implemented with the switchable barrier cell 30 of FIG. 31, the stereoscopic image display apparatus of the present invention includes a display panel 10, a switchable barrier cell 30, a touch screen 20, a display panel driver 210, a switchable barrier cell driver 220, A touch screen control unit 230, a controller 240, and the like. The display panel 10, the switchable barrier cell 30, and the touch screen 20 have been fully described above.

The display panel driver 210 supplies data voltages to the data lines of the pixel array 11 and supplies scan pulses to the scan lines to drive the pixel array 11. [ The display panel driver 210 includes a data driver circuit and a gate driver circuit. The gate driving circuit supplies a gate signal to the gate lines to sequentially drive the gate lines. The data driving circuit converts the digital data signal inputted from the controller 240 into an analog data signal. The data driving circuit supplies the analog data signal to the data lines each time the gate signal is supplied.

The switchable barrier cell driver 220 supplies the driving voltage to the common electrode 33 and the divided electrodes 31A and 31B of the switchable barrier cell 30. The switchable barrier cell driver 220 supplies the driving voltage differently in the two-dimensional and three-dimensional images under the control of the controller 240. When a two-dimensional image is implemented, the switchable barrier cell driver 220 supplies a driving voltage so that a voltage difference does not substantially occur between the common electrode 33 and the divided electrodes 31A and 31B. In the case of implementing a three-dimensional image, the switchable barrier cell driver 220 supplies the driving voltage so that the voltage applied to the common electrode 33 and the second n electrodes 31B does not substantially generate a voltage difference. The switchable barrier cell driver 220 supplies the driving voltage so that a voltage difference is generated between the common electrode and the second n-1 electrodes 31A.

A predetermined driving voltage is supplied to the touch sensors 21 of the touch screen 20 through wirings (not shown). The touch sensors 21 sense a change in resistance, current, or electrostatic capacitance that varies at the time of touch input and supply the output to the touch screen controller 230. The touch screen control unit 230 converts the analog output of the touch sensors 21 into digital data and calculates a coordinate value indicating a touch input point using a known touch recognition algorithm for analyzing the digital data.

The controller 240 supplies digital video data and timing signals (Vsync, Hsync, DE, CLK) synchronized with the digital video data to the display panel driver 210. [ The timing signals Vsync, Hsync, DE and CLK include a vertical synchronization signal Vsync, a horizontal synchronization signal Hsync, a data enable signal DE and a clock signal CLK.

The controller 240 generates a data control signal for controlling the data driving circuit of the display panel driving unit 210 and a gate control signal for controlling the gate driving circuit of the display panel driving unit 210 using a plurality of timing signals. The data control signal generated by the controller 240 is supplied to the data driving circuit to control the data driving circuit. The gate control signal generated by the controller 240 is supplied to the gate drive circuit to control the gate drive circuit.

The controller 240 generates signals for controlling the drive voltage in the two-dimensional and three-dimensional images to the switchable barrier cell driver 220 differently. The switchable barrier cell 30 driving control signal generated by the controller 240 is supplied to the switchable barrier cell driver 220 to control the switchable barrier cell driver 220.

The controller 240 executes an application corresponding to the coordinate value input from the touch screen controller 230 and synchronizes the operations of the display panel driver 210 and the touch screen controller 220.

A stereoscopic image display device including the touch screen 20 implemented with the switchable barrier cell 30 of FIGS. 11, 15, 19, 23, and 27 may be implemented as shown in FIG. The stereoscopic image display device including the touch screen 20 implemented with the switchable lens cell 40 of FIGS. 4, 12, 16, 20, 24, and 28 may be implemented as shown in FIG. 31 have.

32 is a block diagram showing a stereoscopic image display device including a touch screen 20 implemented by the lenticular lens cell 50 of FIG. The lenticular lens cell 50 can not switch between the two-dimensional image and the three-dimensional image, and only the three-dimensional image is implemented, so that the switchable barrier cell driver 220 is not required. The display panel driver 310, the touch screen controller 330, and the controller 340 are the same as described with reference to FIG.

The stereoscopic image display device including the touch screen 20 implemented by the lenticular lens cell 50 of FIGS. 13, 17, 21, 25, and 29 can be implemented as shown in FIG. The stereoscopic image display device including the touch screen 20 implemented with the barrier film 60 of FIGS. 9, 14, 18, 22, 26, and 30 may be implemented as shown in FIG.

33 is a sectional view showing a stereoscopic image display device in which the touch screen 20, the lens / barrier cell, and the display panel 10 are bonded together by the sealant 71. Fig. 33, the display panel 10 and the lens / barrier cells are bonded together by the sealant 71, and the touch screen 20 and the lens / barrier cell are bonded together by the sealant 71 ) May be considered.

At least six transparent substrates 181, 182, 183, 184, 185 and 186 are required when the touch screen 20, the lens / barrier cell and the display panel 10 are bonded together by the sealant 71, There is a lot of problems. In addition, it is difficult to reduce the thickness of the stereoscopic image display device.

33, there is an air layer 90 between the touch screen 20 and the switchable barrier cell 30. As a result, the angle of refraction of the light is lowered, so that the reflection of light occurs more frequently and the visibility is lowered.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the 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 claims.

10: display panel 11: pixel array
12: cathode electrode
20: touch screen 21: touch sensor
30: Switchable barrier cell 31A, 31B, 41A, 41B:
32, 42: liquid crystal layer 33, 43: common electrode
34A, 34B: Polarizing plate
40: switchable lens cell 44: insulating film
50: Lenticular lens cell 51: Lenticular lens
60: Barrier film 61: Barrier
71: sealant 72: transparent double-sided adhesive film
80: insulating film 90: air layer
210, 310: Display panel driver 220: Lens / barrier cell driver
230, 330: Touch screen control unit 240, 340:
101, 121, 141, 161, and 181:
102, 122, 142, 152, 162, 172, 182:
103, 113, 123, 133, 143, 163, 183:
104, 124, 144, 164, 184: Fourth transparent substrate
105, 185: fifth transparent substrate
186: sixth transparent substrate

Claims (15)

A display panel including an array of pixels;
A touch screen formed on the display panel; And
And a lens cell disposed between the display panel and the touch screen,
Wherein the touch screen and the lens cell share a first shared substrate,
Wherein the display panel and the lens cell share a second shared substrate,
Wherein the touch sensor of the touch screen is formed on a lower surface of the first shared substrate, an insulating film covering the touch sensors is formed on a lower surface of the first shared substrate, and a lower surface of the first shared substrate is opposed to the lens cell Stereoscopic image display device. delete delete The method according to claim 1,
Wherein the lens cell is any one of a switchable lens cell and a lenticular lens cell,
Wherein the switchable lens cell comprises an electrically controllable liquid crystal. delete delete The method according to claim 1,
Wherein the second shared substrate and the pixel array of the display panel are bonded by a transparent double-sided adhesive film. A display panel including an array of pixels;
A touch screen formed on the display panel; And
And a barrier cell disposed between the display panel and the touch screen,
Wherein the touch screen and the barrier cell share a first shared substrate,
Wherein the display panel and the barrier cell share a second shared substrate,
Wherein the touch sensor of the touch screen is formed on a lower surface of the first shared substrate, an insulating film covering the touch sensors is formed on a lower surface of the first shared substrate, and a lower surface of the first shared substrate is opposed to the barrier cell Stereoscopic image display device. delete delete 9. The method of claim 8,
Wherein the barrier cell is any one of a switchable barrier cell and a barrier film,
Wherein the switchable barrier cell comprises an electrically controllable liquid crystal. delete delete 9. The method of claim 8,
Wherein the second shared substrate and the pixel array of the display panel are bonded by a transparent double-sided adhesive film. The method according to any one of claims 1, 4, 7, 8, 11, and 14,
Wherein the display panel is implemented by any one of a liquid crystal display device, a field emission display device, a plasma display panel, an organic light emitting diode device, and an electrophoretic display device.

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