KR20110005749A - Portable display device - Google Patents

Abstract

PURPOSE: A portable display device for including two display panels is provided to classify a driving signal and compensate a coupling unit partitioned into the optical unit. CONSTITUTION: A display panel(2) comprises a seam part(8) connected to the other display panel. In the joint side, the pixel is arranged within the distance to the boundary of the display panel. The outer electrode is not included in the joint side. Panel housings install to the chassis. When the display panel installs to the shelf or the chassis, the opposite side of the joint side covers the shelf or the chassis.

Description

Portable Display Device

In the present invention, when configuring one large screen using two or more displays, the plurality of displays can be folded or unfolded, and when the display is unfolded, the optical means provided at the top of the display can be adjacent to each other. The present invention relates to a portable display device for minimizing a seam, which is an interface of a joint.

The construction of one large screen using two or more displays has been applied to large display devices. Recently, the necessity of a large screen has been increased as the performance is improved due to the performance of wireless Internet, etc., in a portable display device. In the portable display device, the large screen does not use portable characteristics such as size and movement, and thus a folding display is adopted. One portable display device has been proposed.

In general, a flat panel display is used for a portable display device, and a flat panel display includes a liquid crystal display (LCD), a field emission display (FED), a plasma display panel (PDP), an electro luminescent (EL), and an electronic paper.

In a portable display device employing a multi-display, a foldable display has been proposed to increase portability. However, in such a foldable display, when the packaging housing with the display is unfolded, there are some seams, which are interfaces between displays, effectively. In order to reduce the seam, there is a problem in that the display must be processed very precisely, and there is also a problem of deterioration in reliability due to precision machining.

Accordingly, the present invention has been invented to solve the above-mentioned problems of the prior art, and can fold or unfold a panel housing equipped with a plurality of displays, and unfold the panel housing so that the sides of the optical means are adjacent to each other. It is an object of the present invention to provide a folding portable display device that constitutes a screen.

In order to achieve the above object, in the present invention, there is provided a panel housing that can be folded and unfolded, consisting of at least two, each of which is equipped with a display, and the panel housing is equipped with a driving circuit for driving the display, and the panel housing When the panel housing is unfolded in a folded state through the rotational movement, the side surfaces of the optical means are adjacent to each other. On one side of the panel housing, an opening for adjoining the optical means is formed or a connection joint is formed. It is characterized in that it is provided at the top of one side of the panel housing to be mounted in the joint portion of the display.

Then, the display is in close contact with the inside of one side of the panel housing, the protective means is provided on the optical means, the protective means and the optical means are integrally formed.

In addition, when the panel housing rotates, the distance between the rotation center and the optical means or the rotation center and the connecting joint is less than 1 mm, the sealing agent for sealing the upper substrate and the lower substrate in the display panel forming the display, the display panel In the joint portion of, the position is within 0.5 mm of the pixel provided in the display panel.

On the other hand, the optical means is to move the path of light, the angle of moving the light path is considered the distance between the display and the optical means and the non-screen display area.

In addition, as another embodiment of the present invention, when the display is mounted to the appliance, the side of the appliance of the seamless portion of the display is cut out to form an opening or to form a joint seam and the display to be mounted to the chassis. In the case of the display joint, only the display side is audited.

The display panel of claim 1, further comprising: dividing a data signal supplied to the first display and the second display, dividing a selection signal supplied to the first display and the second display, and configuring the display; In addition, the display screen may be connected to the side with the joint portion connected to each other, and selects one side of the external electrode for supplying the data signal and the selection signal.

As described above, an opening is formed on one side of the panel housing or a joint is formed so that the optical means is adjacent to each other when the panel housing is folded in the folded state, and the optical means is mounted in the joint portion of the display. It is provided at the top of one side of the panel housing to compensate for the joints, which are the non-display areas of the display, by the optical means, and enables the display to be divided into two screens to form one screen. .

1A and 1B illustrate a folding portable display device of the present invention.
2A to 2C are cross-sectional views of the panel housing in an unfolded state.
3 is a view showing only a part of the panel housing folded.
4A to 4B are views of an embodiment for reducing the gap between seams.
5 is a plan view showing a state in which the optical means is removed in a state in which the panel housing is unfolded.
6A and 6B are illustrations of the embodiment shown for the optical means.
7 is a view illustrating a state in which a cover means is removed from a display device.
8 is a cross-sectional view of a state in which the panel housing is folded.
9A to 9C are views showing the apparatus on which the display is mounted.
10A-10C are illustrations of an embodiment showing a display wrapped in a chassis.
11A and 11B are block diagrams of a driving circuit for driving two screens.
12 is a diagram of an embodiment showing an external electrode of a display panel.

EMBODIMENT OF THE INVENTION Hereinafter, preferred embodiment of this invention is described with reference to an accompanying drawing.

The present invention provides a folding portable display device having an effect of viewing at least one screen by interconnecting at least two flat panel displays. As the flat panel display panel, LCD, FED, PDP, Electric Paper, etc. may be used.

The present invention allows two or more flat panel displays to be interconnected, so that the use of two or more displays has the same effect as using a single display.

1A and 1B illustrate a folding portable display device of the present invention.

As shown in FIG. 1A, the foldable portable display device of the present invention includes two displays and two panel housings 20 and 40 equipped with displays, and when the display device is unfolded, the panel housing 20. Optical means 27 provided respectively at 40 are shown.

At this time, the display 2, 4 is provided below the optical means 27. In addition, the two panel housings 20 and 40 are connected by a connecting means 6 that can be folded and unfolded. In this embodiment, a hinge is used as the connecting means 6.

1B is a view showing a state where the foldable portable display device of the present invention is folded.

The cover unit 18 is provided at the side of the panel housing 20 and 40. The cover means protects the side of the optical means 27 or the side of the display 2, 4.

2A to 2C are cross-sectional views of the panel housing in an unfolded state.

Figure 2a is a view showing that the optical means is provided on the top of the display. As shown in the figure, when the panel housings 20 and 40 are unfolded and in close contact with each other, the optical means 27 is in a state adjacent to each other.

At this time, when the panel housings 20 and 40 are unfolded, in order for the optical means 27 to be adjacent to each other, the panel housings 20 and 40 of the panel housings 20 and 40 are in close contact with each other. The optical means 27 is provided at the top of the side. In this case, in order for the optical means 27 to be adjacent to each other, the side surfaces of the panel housings 20 and 40 are cut out to form the openings 8b. The opening 8b is shown more clearly in FIG. 8 described later.

In addition, as shown in the figure, the display 20 is provided to be in close contact with one side of the panel housing 20 and 40.

Here, the display is closely attached to the inside of one side of the panel housing 20 and 40, thereby protecting the side of the display 2 and 4 from external impact. The panel housings 20 and 40 are able to protect the display side from impact because of their thickness.

In addition, various circuits and devices 25 and 45 are provided inside the panel housings 20 and 40, and support members 26 and 46 are also provided to support the displays 2 and 4. A cover is provided at the edge of the display 2 and 4. In addition, the cover means 18 is omitted for convenience.

In addition, the extension line of the center of rotation A meets the surface of the cover 24. In other words, the height of the center of rotation is the height of the cover.

2b is a view of an embodiment with a protective means on top of the optical means. As shown in the figure, steps 24a and 20c are provided on the sides of the cover 24 and the panel housings 20 and 40, and the protection means 14 are mounted on the steps 24a and 20c. And the optical means 27 is provided below the protection means (14). At this time, it is obvious that the protection means 14 and the optical means 27 can be integrated. Here, the optical means means a micro prism or a micro lens, and the protection means 14 and the optical means 27 are integrally formed to mean that the micro prism or the micro lens is formed under the protection means 14. The protective means is formed thinner than 1 mm or 0.5 mm.

Figure 2c is a view of an embodiment having a connection seam on the upper side of the panel housing. When the panel housings 20 and 40 are unfolded, the optical means 27 are adjacent to each other, and the connecting joints 20a and 40a are provided therebetween. Therefore, the joints 20a and 40a block the opening 8b.

The connection joints 20a and 40a may be thinner than other portions of the panel housings 20 and 40 or may be 0.5 mm or less in thickness.

3 is a view showing only a part of the panel housing folded.

3 shows that when the panel housings 20 and 40 are partially folded, a joint gap 8a is formed between the joint portions 8 adjacent to the optical means 27 or the display 2 and 4. have. Since the seam gap 8a may be a disadvantage in the display device, it is better to make the seam gap 8a smaller.

4A to 4B are views of an embodiment for reducing the gap between seams.

The folding and unfolding operation of the panel housing 20 (40) occurs around the center of rotation A of the panel housings 20 and 40 shown in Figs. 2A to 2B. The smaller the distance between the center and the optical means 27, the smaller the gap between the seams 8a. Thus, the figures of Figs. 4A and 4B show that the distance between the center of rotation A and the optical means 27 is made very small. That is, the straight line distance between the center of rotation A and the optical means 27 or the protective film 14 is less than 1 mm as shown in the circle indicated by the dotted line. It may be formed slightly apart within 0.1 mm.

At this time, the straight line distance as shown in Figure 4a, when the connection joint portion 20a is formed means a straight line distance between the center of rotation A and the connection joint portion 20a, as shown in Figure 2a Naturally, if not formed, it means a straight line distance between the rotation center A and the optical means 27.

5 is a plan view showing a state in which the optical means is removed in a state in which the panel housing is unfolded.

In the figure, it can be seen that one side of the display (2) (4) is formed in close contact with the inner side of the panel housing (20, 40). By doing so, the seam 8, which is the boundary between the displays, can be minimized.

The original plan is the figure which expanded and showed the seam part. The display 2, 4 is in close contact with the inner side of the panel housing 20, 40, the protective means 14 or a protective film may be provided between the display and the panel housing. The pixels 2e and 4e of the display are immediately adjacent to each other. At this time, the sealing agent 2f of the panel of the display 2 and 4 is provided immediately adjacent to the pixel 2e. That is, although the sealing agent 2f is immediately adjacent to the display pixel 2e located in the seam 8 part, it is located adjacent to within 0.5 mm. The sealant is also thinly formed to within 0.5 mm.

At this time, when the joint portion 8 is a non-display area in which the screens of the displays 2 and 4 are not displayed, as shown in FIG. 5, the screen non-display area is a side wall of the panel housing 20 and 40 and a protective film. And the sealing agent 2f. In the drawing, the screen non-display area is denoted by B, and the entire screen non-display area is doubled as B. FIG.

In order to minimize the non-display area of the screen, optical means may be provided inside the non-display area. The optical means 27 is provided on the sidewalls of the panel housings 20 and 40 so that the non-display area of the screen can be visually minimized.

6A and 6B are illustrations of the embodiment shown for the optical means.

The optical means of FIG. 6A is a diagram of an embodiment of the optical means for inclining the path of light propagation. It is a structure for forming a reflective film 27b for inclining the light path between the optical conductors 27a made of transparent plastic material such as acrylic or PET. In addition, the light diffusion plate 27c is further provided on the upper end of the optical means 27, and serves to vary the angle of the light emitted obliquely.

As shown in the figure, if the distance from the display 2 to the surface of the optical means 27 is A, the inclination of the reflective film 27b in the optical means 27 is determined in consideration of the value of B in FIG.

That is, tan alpha = A / B.

In addition, when the optical means 27 functions to enlarge using a micro lens or the like, the enlargement ratio is determined in consideration of the A value and the B value.

6B is a diagram of an embodiment that more accurately illustrates the distance between the display and the surface of the optical means.

The display consists of an upper substrate 2i and a lower substrate 2j.

As shown in the figure, the light leaves the actual display 2 and 4 since the light leaves the electrode 2h of the display 2 and 4, and from the time the display 2 leaves the optical means 27. The distance to the surface is A '. Then, in Eq. (1), A 'is substituted for A.

7 is a view illustrating a state in which a cover means is removed from a display device.

The panel housings 20 and 40 are provided with an accommodating space 28 for accommodating the cover means 18, and a joint gap 8a exists between the optical means 27 and the optical means 27. Of course, the gap between the optical means 27 and the optical means 27 can be made very narrow so that there is almost no seam clearance 8a.

The side of the optical means 27 is shown in dashed lines in FIG. 7 to indicate that the side of the optical means may or may not be exposed. In other words, if the structure of Figure 2a, the side of the optical means 27 will be exposed, as shown in Figure 2c when the connection joints (20a, 40a) is present, the side of the optical means 27 is not exposed.

8 is a cross-sectional view of a state in which the panel housing is folded.

8 omits the cover means 18 and the storage space 28 for convenience of illustration. In the figure, the distances L1 and L2 from the rotation center A to the two optical means 27 are equal to each other. In addition, the distances D1 and D2 between the two displays 2 and 4 at the center of rotation are also the same.

Accordingly, when the panel housings 20 and 40 in the folded state are unfolded while performing a rotational movement, one side of the two optical means 27 and 27 also comes into contact with or adjacent to each other.

At this time, the side surface of the optical means 27 is exposed to the outside through the opening 8b, but the side surface of the optical means 27 may not be exposed by the connection joints 20a and 40a.

9A to 9C are views showing the apparatus on which the display is mounted.

Typically, the display 2 includes not only the display panel 2a but also the driving circuit board 2b backlight 30 and the mechanism 160. In the present invention, the side surface of the appliance 160 is also cut where the joint portion 8 of the display 2 is located. By doing so, the non-screen display area between the displays 2 and 4 can be minimized. That is, the fixture 160 is provided with connection joints 160e and 160f to minimize the non-screen display area.

9B is a view showing the open end of the appliance connecting joints 160e and 160f by completely cutting the side of the appliance.

And, Figure 9c is a view of an embodiment in which the mechanical connection joints (160e, 160f) are formed thin. That is, it is a view showing the appliance connecting joints 160e and 160f formed thinner than other parts of the appliance and having a thickness within 0.3 mm.

The instrument plate 160a is equipped with a backlight, a display panel 2a, 4a, and the like.

10A-10C are illustrations of an embodiment showing a display wrapped in a chassis.

As shown in the figure, a display panel 2a, driving circuits 2b, 2c, and the like are mounted in the chassis 16. Here, the chassis refers to a structure that surrounds the display and the display driving circuit with a metal material such as aluminum.

FIG. 10B is a cross-sectional view illustrating that the display panel 2a, the circuit, and the backlight 30 are provided in the chassis 16. In the part where the seam 8 is provided, the chassis 16 covers only the side surface of the display panel 2a. This is because the non-display area of the screen is minimized when only the side surface of the chassis 16 and the upper portion 8 are not wrapped.

That is, the connecting joint 16a to which the display 2 and 4 are connected in the chassis 16 is meant to have a structure surrounding only the side of the display. Of course, in order to reduce the screen non-display area, the connecting joint portion 16a may be formed thinner than other places.

Figure 10c is a view showing a connecting joint having an open shape in the chassis.

That is, the part of the joint part 8 which the side surface of the display 2 and 4 mutually contacts or adjoins in close proximity is cut | disconnected, and is made into the open form. Accordingly, the connection joint portion 16a of FIG. 10C has an open shape such that the side surfaces of the display panels 2 and 4 are exposed out of the chassis.

11A and 11B are block diagrams of a driving circuit for driving two screens.

The first display panel 2a and the second display panel 4a are directly connected to the first and second source driving drivers 2c and 4c and the first and second gate driving drivers 2b and 4b, respectively.

In the drawings, the display device body is omitted for convenience. The predetermined signal from the main body is applied to the FPGA 100. The FPGA 100 generally includes a low data processor 110, a column data processor 140, a memory 130 device, a timing controller 120, and the like. Then, the power supply unit 200 supplies power.

The driving signal from the column data processing unit 140 is supplied to the source driving driver 2c and 4c, and the signal from the raw data processing unit 110 is feeding to the gate 2b and 4b driving driver. Supplied. Each driving driver is directly connected to the display panel 2a so that a screen is displayed on the display panel 2a. The timing controller 120 serves to match the synchronization signal between the source driver and the gate driver.

In some cases, the source driving driver may be referred to as a data signal, and the gate driving driver may be referred to as a selection signal Common.

In order to drive the two first and second display panels 2a and 4a as shown in FIGS. 11A and 11B, the source drive drivers 2c and 4c and the gate drive drivers 2b are respectively provided on the display panels 2a and 4a. (4b) shall be connected. Then, driving signals are supplied to these source driving drivers 2c and 4c and gate driving drivers 2b and 4b, respectively.

11A is a block diagram in the case of sending the same signal to the first source driving driver 2c and the second source driving driver 4c, respectively, which send data signals to the display panels 2a and 4a. Therefore, by time-dividing the first gate driver 2b and the second gate driver 4b that send the selection signal, the signal is first sent to the first gate driver 2b, and then the second gate driver 4b. The method of sending a selection signal is used.

Conversely, FIG. 11B is a block diagram in the case of sending the same signal to the 1st gate drive driver 2b and the 2nd gate drive driver 4b which respectively send a selection signal to the display panels 2a and 4a. Therefore, data signals to be sent to the first and second source driver drivers 2c and 4c must be divided and sent differently.

For example, when n electrode lines are connected to the source driving driver in the first and second display panels 2a and 4a, the present invention allows two displays to be viewed on one screen. In this combined state, the total data lines are 2n. Therefore, by dividing the image signal stored in the memory 130 device, the data signal from the first line to the nth line is sent to the first source driving driver 2c, and the data from the n + 1th line to the 2nn line The signal is sent to the second source driver 4c.

That is, when a driving signal is sent to each of the display panels 2a and 4a as described above, the screen driven by the two display panels 2a and 4a constitutes one screen.

Meanwhile, the driving method in which the block diagrams of FIGS. 11A and 11B are combined may be used. That is, the data signals applied to the first and second source drive drivers 2c and 4c are also divided and supplied, and the selection signals applied to the first and second gate drive drivers 2b and 4b are also divided in time and supplied. I can give it.

12 is a diagram of an embodiment showing an external electrode of a display panel.

In general, the driving driver I.C is connected to the external electrodes 51, 52 and 53 of the display panels 2a and 4a. When the inside of the display panels 2a and 4a is enlarged, the pixels 50 exist as shown in the original drawing. Since the flat panel display is driven by xy coordinates, the external electrodes are drawn out using two surfaces of the four-sided display panel. However, in competition for mass production and price reduction, a source driver driver and a gate driver driver are often one-chip, and one driver driver I.C. is often used.

To this end, as shown in FIG. 12, the electrode in the x direction pulls out the x direction external electrode 51 on the one hand. However, the electrodes in the y-direction are divided into left and right, and the external electrodes 52 and 53 in the y-direction are also drawn out through the connecting electrodes 52a and 53a in the direction in which the x-direction external electrodes 51 are drawn out. In the drawings, only a part of the connection electrodes 52a and 53a are illustrated for convenience, and thus not all connection states of the electrodes are shown.

As described above, the external electrode for applying the data signal and the selection signal is drawn out on only one side of the display panel 2a and 4a, so that the driver driver which functions to apply the data signal and the selection signal is one-chip and connected to the display panel. There is a number.

In this case, the display panel 2a and 4a selects one side opposite to the side where the joint screen 8 is connected to each other and draws an external electrode for supplying the data signal and the selection signal.

Explanation of symbols on the main parts of the drawings
2,4 display 6 connection means
8: seam 8b: opening
14 protection means 16: chassis
18: cover means 27: optical means
20, 40: panel housing 20a, 40a: connection joint
26, 46: support 51, 52, 53: external connection electrode

Claims (4)

A display panel provided with an external electrode is provided, and the external electrode is provided on one side of four sides of the display panel, the display panel includes a pixel, and the drive driver for sending a driving signal to the pixel. In the portable display device, characterized in that connected to the electrode,
The display panel has a joint portion connected to another display panel, wherein the distance between the pixel and the boundary of the display panel is less than 1 mm in the joint portion, and the external electrode is not provided in the joint portion. .
The portable display device of claim 1, wherein the panel housing is mounted to a chassis or a mechanism, and the chassis or the mechanism is opened at the joint portion.
The portable display device according to claim 1, wherein when the display is mounted on an instrument or a chassis, the upper side of the display covers a thicker side than the joint side when the instrument or chassis covers.
The portable display device of claim 1, wherein when the display panel is mounted in the panel housing, the joint part of the display panel is in close contact with the side wall of the panel housing.

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