KR20110058303A - Plasma display panel and multi plasma display panel - Google Patents

Abstract

PURPOSE: A plasma display panel and a multi plasma display panel are provided to visually reduce the size of a seam region by implementing optical permeability on a seal layer. CONSTITUTION: In a plasma display panel and a multi plasma display panel, a backside substrate(211) is arranged to be opposite to a front substrate. A seal layer(400) is arranged between the front substrate and the backside substrate. A first optical layer is arranged between the seal layer and the front substrate. The first optical layer is a mirror reflecting an incident light from the front substrate to the backside substrate. An upper dielectric layer is arranged on the front substrate.

Description

Plasma Display Panel and Multi Plasma Display Panel

The present invention relates to a plasma display panel and a multi-plasma display panel.

The plasma display panel includes a phosphor layer formed in a discharge cell divided by a partition wall, and also includes a plurality of electrodes.

When the drive signal is supplied to the electrode of the plasma display panel, the discharge is generated by the drive signal supplied in the discharge cell. Here, when discharged by a drive signal in the discharge cell, the discharge gas filled in the discharge cell generates vacuum ultraviolet rays, and the vacuum ultraviolet light emits the phosphor formed in the discharge cell to emit visible light. Generate. The visible light displays an image on the screen of the plasma display panel.

SUMMARY OF THE INVENTION An object of the present invention is to provide a plasma display panel and a multi-plasma display panel in which an optical layer is disposed in a bezel region or a real layer is formed to have light transmissivity.

According to the present invention, a plasma display panel includes a front substrate, a rear substrate disposed to face the front substrate, a seal layer disposed between the front substrate and the rear substrate, and a gap between the seal layer and the front substrate. It may include a first optical layer (First Optical Layer).

The first optical layer may be a mirror that reflects light incident from the front substrate toward the rear substrate.

In addition, an upper dielectric layer may be disposed on the front substrate, and the first optical layer may be disposed between the upper dielectric layer and the seal layer.

In addition, a protective layer may be disposed on the upper dielectric layer, and the first optical layer may be disposed between the protective layer and the seal layer.

In addition, a first electrode may be disposed on the front substrate, and the first optical layer may include a portion disposed on the same layer as the first electrode.

In addition, the line width of the first optical layer may be larger than the line width of the real layer.

In addition, another plasma display panel according to the present invention includes a front substrate, a rear substrate disposed to face the front substrate, a seal layer disposed between the front substrate and the rear substrate, the seal layer and the front substrate. A first optical layer disposed between the first optical layer and a second optical layer disposed at a position overlapping the first optical layer on the front surface of the front substrate.

The first optical layer may be a mirror that reflects light incident from the front substrate toward the rear substrate.

In addition, the second optical layer may be a half mirror.

In addition, the second optical layer may be a polarization filter.

In addition, the second optical layer may include a plurality of protrusions on a surface thereof.

In addition, the line width of the first optical layer may be larger than the line width of the real layer.

In addition, the line width of the second optical layer may be larger than the line width of the real layer.

In addition, another plasma display panel according to the present invention may include a front substrate, a rear substrate disposed to face the front substrate, and a seal layer disposed between the front substrate and the rear substrate and having a light transmittance. Can be.

The apparatus may further include a light emitting part disposed at a position overlapping with the real layer at a rear surface of the rear substrate.

In addition, the seal layer may include at least one of glass particles and an optical fiber.

In addition, the light emitting unit may be a light emitting diode (LED).

In addition, the light emitting diode may include at least one of blue, green, and red light emitting diodes.

In addition, the real layer may include at least one color layer of blue, green, and red, and the light emitting diode may include a white light emitting diode.

In addition, a lower dielectric layer may be disposed on the rear substrate, and the lower dielectric layer may be omitted in an area overlapping the seal layer.

In addition, another plasma display panel according to the present invention includes a front substrate, a rear substrate disposed to face the front substrate, a partition wall disposed between the front substrate and the rear substrate, and between the front substrate and the rear substrate. It is possible to include a seal layer (Seal Layer) disposed and having a light transmission, the outermost partition wall adjacent to the seal layer may have a light transmission.

In addition, the seal layer may include at least one of glass particles and an optical fiber.

In addition, the outermost partition wall may include at least one of glass particles and an optical fiber.

In addition, the multi-plasma display panel according to the present invention is a multi-plasma display panel including a plurality of plasma display panel disposed adjacent, each of the plurality of plasma display panel is disposed on the front substrate, the rear substrate facing each other The substrate may include a seal layer disposed between the front substrate and the back substrate, and a first optical layer disposed between the seal layer and the front substrate.

In addition, another multi-plasma display panel according to the present invention is a multi-plasma display panel including a plurality of plasma display panel disposed adjacent, each of the plurality of plasma display panel is disposed opposite the front substrate, the front substrate A rear layer, a seal layer disposed between the front substrate and the back substrate, a first optical layer disposed between the seal layer and the front substrate, and the first substrate in front of the front substrate. It may include a second optical layer disposed at a position overlapping with the first optical layer.

In addition, another multi-plasma display panel according to the present invention is a multi-plasma display panel including a plurality of plasma display panel disposed adjacent, wherein the plurality of plasma display panel is disposed to face the front substrate, the front substrate, respectively The rear substrate may be disposed between the front substrate and the rear substrate, and may include a seal layer having light transparency.

In addition, another multi-plasma display panel according to the present invention is a multi-plasma display panel including a plurality of plasma display panel disposed adjacent, wherein the plurality of plasma display panel is disposed to face the front substrate, the front substrate, respectively And a barrier layer disposed between the front substrate and the rear substrate, and a seal layer disposed between the front substrate and the rear substrate and having a light transmitting property, and the outermost layer adjacent to the seal layer. The partition can have light transmittance.

The plasma display panel according to the present invention has an effect of making the bezel area visually small by disposing an optical layer in the bezel area or by forming the real layer to have light transmittance.

In addition, the multi-plasma display panel according to the present invention has an effect of making the size of the seam region between two adjacent plasma display panels appear visually small.

Hereinafter, a plasma display panel and a multi-plasma display panel according to the present invention will be described in detail with reference to the accompanying drawings.

1 to 3 are views for explaining the structure and driving method of the plasma display panel.

The plasma display panel may implement an image in a frame including a plurality of subfields.

In detail, as illustrated in FIG. 1, the plasma display panel includes a rear substrate 211 on which a plurality of second electrodes 213 and X intersect the plurality of first electrodes 202 (Y) and 203 (Z). can do.

Here, the first electrodes 202 and 203 may include scan electrodes 202 and Y parallel to each other, and sustain electrodes 203 and Z, and the second electrode 211 may be referred to as an address electrode.

On the front substrate 201 where the scan electrodes 202 and Y and the sustain electrodes 203 and Z are formed, the discharge currents of the scan electrodes 202 and Y and the sustain electrodes 203 and Z are limited and the scan electrodes 202 and Y are restricted. ) And an upper dielectric layer 204 that insulates between the sustain electrodes 203 and Z.

A protective layer 205 may be formed on the front substrate 201 where the upper dielectric layer 204 is formed to facilitate discharge conditions. The protective layer 205 may include a material having a high secondary electron emission coefficient, such as magnesium oxide (MgO) material.

The address electrodes 213 and X are formed on the rear substrate 211, and the address electrodes 213 and X are covered on the upper side of the rear substrate 211 on which the address electrodes 213 and X are formed. A lower dielectric layer 215 may be formed that insulates X).

On top of the lower dielectric layer 215, a partition space 212, such as a stripe type, a well type, a delta type, a honeycomb type, etc., is formed on the discharge space, that is, to partition the discharge cells. Can be. Accordingly, the first discharge cell emitting red (R) light, the second discharge cell emitting blue (B) light, and the green (Green) light between the front substrate 201 and the rear substrate 211. : G) A third discharge cell or the like that emits light can be formed.

The partition 212 may include a first partition 212b and a second partition 212a, and a height of the first partition 212b and a height of the second partition 212a may be different from each other.

In the discharge cell, the address electrode 213 may cross the scan electrode 202 and the sustain electrode 203. That is, the discharge cell is formed at the point where the address electrode 213 crosses the scan electrode 202 and the sustain electrode 203.

A predetermined discharge gas may be filled in the discharge cell partitioned by the partition wall 212.

In addition, a phosphor layer 214 that emits visible light for image display may be formed in the discharge cells partitioned by the partition wall 212. For example, a first phosphor layer that generates red light, a second phosphor layer that generates blue light, and a third phosphor layer that generates green light may be formed.

In addition, the address electrode 213 formed on the rear substrate 211 may have substantially the same width or thickness, but the width or thickness inside the discharge cell may be different from the width or thickness outside the discharge cell. . For example, the width or thickness inside the discharge cell may be wider or thicker than that outside the discharge cell.

When a predetermined signal is supplied to at least one of the scan electrode 202, the sustain electrode 203, and the address electrode 213, discharge may occur in the discharge cell. As such, when discharge is generated in the discharge cell, ultraviolet rays may be generated by the discharge gas filled in the discharge cell, and the ultraviolet rays may be irradiated onto the phosphor particles of the phosphor layer 214. Then, a predetermined image may be displayed on the screen of the plasma display panel 100 by the phosphor particles irradiated with ultraviolet rays to emit visible light.

An image frame for implementing gradation of an image in a plasma display panel is described below.

Referring to FIG. 2, a frame for implementing gray levels of an image may include a plurality of subfields SF1 to SF8.

In addition, the plurality of subfields may include a sustain period for implementing gradation according to an address period and a number of discharges for selecting discharge cells in which discharge cells will not occur or discharge cells in which discharge occurs. Period) may be included.

For example, in case of displaying an image with 256 gray levels, for example, one frame is divided into eight subfields SF1 to SF8 as shown in FIG. 2, and each of the eight subfields SF1 to SF8 is an address. It can include a period and a sustain period.

Alternatively, at least one subfield of the plurality of subfields of the frame may further include a reset period for initialization.

In addition, at least one subfield of the plurality of subfields of the frame may not include a sustain period.

Meanwhile, the weight of the corresponding subfield may be set by adjusting the number of sustain signals supplied in the sustain period. That is, a predetermined weight can be given to each subfield using the sustain period. For example, the weight of each subfield is 2 ⁿ by setting the weight of the first subfield to 2 ⁰ and the weight of the second subfield to 2 ¹ (where n = 0, 1, 2, 3, 4, 5, 6, 7) can be set to increase the ratio. As described above, gray levels of various images may be realized by adjusting the number of sustain signals supplied in the sustain period of each subfield according to the weight in each subfield.

In FIG. 2, only one image frame is composed of eight subfields. However, the number of subfields constituting one image frame may be variously changed. For example, one video frame may be configured with 12 subfields from the first subfield to the twelfth subfield, or one video frame may be configured with 10 subfields.

In addition, in FIG. 2, subfields are arranged in an order of increasing weight in one image frame. Alternatively, subfields may be arranged in an order of decreasing weight in one image frame. Subfields may be arranged regardless.

At least one of the plurality of subfields included in the frame may be a selective erase subfield (SE), and at least one of the plurality of subfields may be a selective write subfield (SW). Do.

If one frame includes at least one selective erase subfield and an optional write subfield, the first subfield or the first and second subfields of the plurality of subfields of the frame are the selective write subfields, It may be desirable for the remainder to be selective erasure subfields.

Here, the selective erasing subfield is a subfield that turns off the discharge cells supplied with the data signal Data to the address electrodes in the address period in the sustain period after the address period.

The selective erasure subfield may include an address period for selecting a discharge cell to be turned off and a sustain period for generating sustain discharge in discharge cells not selected in the address period.

The selective write subfield is a subfield that turns on the discharge cells supplied with the data signal Data to the address electrodes in the address period in the sustain period after the address period.

The selective write subfield may include a reset period for initializing the discharge cells, an address period for selecting the discharge cells to be turned on, and a sustain period for generating sustain discharge in the discharge cells selected in the address period.

A driving waveform for driving the plasma display panel is as follows.

Referring to FIG. 3, in the reset period RP for initializing at least one subfield among a plurality of subfields of a frame, the reset signal RS is applied to the scan electrode Y. Can supply Here, the reset signal RS may include a rising ramp signal (Ramp-Up: RU) in which the voltage gradually rises and a falling ramp signal (Ramp-Down: RD) in which the voltage gradually falls.

For example, the rising ramp signal RU may be supplied to the scan electrode in the setup period SU of the reset period, and the falling ramp signal RD may be supplied to the scan electrode in the setdown period SD after the setup period. .

When the rising ramp signal is supplied to the scan electrode, a weak dark discharge, that is, setup discharge, occurs in the discharge cell by the rising ramp signal. By this setup discharge, the distribution of wall charges can be uniform in the discharge cells.

After the rising ramp signal is supplied, when the falling ramp signal is supplied to the scan electrode, a weak erase discharge, that is, a setdown discharge, occurs in the discharge cell. By this set-down discharge, wall charges such that address discharge can be stably generated can be uniformly retained in the discharge cells.

In the address period AP after the reset period, the scan reference signal Ybias having a voltage higher than the lowest voltage of the falling ramp signal may be supplied to the scan electrode.

In addition, in the address period, the scan signal Sc that falls from the voltage of the scan reference signal Ybias may be supplied to the scan electrode.

Meanwhile, the pulse width of the scan signal supplied to the scan electrode in the address period of at least one subfield may be different from the pulse width of the scan signal of another subfield. For example, the width of the scan signal in the subfield located later in time may be smaller than the width of the scan signal in the preceding subfield. In addition, the reduction of the scan signal width according to the arrangement order of the subfields can be made gradually, such as 2.6 Hz (microseconds), 2.3 Hz, 2.1 Hz, 1.9 Hz, or 2.6 Hz, 2.3 Hz, 2.3 Hz, 2.1 Hz. .... 1.9 ㎲, 1.9 ㎲ and so on.

As such, when the scan signal is supplied to the scan electrode, the data signal Dt may be supplied to the address electrode X corresponding to the scan signal.

When the scan signal and the data signal are supplied, an address discharge may be generated in the discharge cell to which the data signal is supplied while the voltage difference between the scan signal and the data signal and the wall voltage generated by the wall charges generated in the reset period are added. .

In addition, the sustain reference signal Zbias signal may be supplied to the sustain electrode in the address period in which the address discharge occurs so that the address discharge is effectively generated between the scan electrode and the address electrode.

In the sustain period SP after the address period, the sustain signal SUS may be supplied to at least one of the scan electrode and the sustain electrode. For example, a sustain signal may be alternately supplied to the scan electrode and the sustain electrode.

When such a sustain signal is supplied, the discharge cell selected by the address discharge is added with the wall voltage in the discharge cell and the sustain voltage Vs of the sustain signal, and a sustain discharge, i.e., display between the scan electrode and the sustain electrode when the sustain signal is supplied. Discharge may occur.

4 to 12 are diagrams for explaining the optical layer. Hereinafter, a description of the parts described above in detail will be omitted.

Referring to FIG. 4, the plasma display panel according to the present invention includes a front substrate 201, a rear substrate 211 disposed to face the front substrate 201, and a seal layer disposed between the front substrate 201 and the rear substrate. Layer, 400). Here, the seal layer 400 may serve to bond the front substrate 201 and the rear substrate 211.

Preferably, the upper dielectric layer 204 is disposed on the front substrate 201, the lower dielectric layer 215 is disposed on the rear substrate 211, and the seal layer 400 includes the upper dielectric layer 204 and the lower dielectric layer 215. It may be desirable to be disposed between.

Meanwhile, as shown in FIG. 1, the protective layer 205 may be further disposed on the MgO material in the upper dielectric layer 204, but the thickness of the protective layer 205 may be negligible compared to the thickness of the upper dielectric layer 204. Thin enough Therefore, in FIG. 4, it is assumed that the upper dielectric layer 204 and the seal layer 400 are in contact with each other.

A first optical layer 40 may be disposed between the real layer 400 and the front substrate 201. Preferably, the first optical layer 40 may be disposed between the upper dielectric layer 204 and the seal layer 400.

The first optical layer 40 may be a mirror that reflects light incident from the front substrate 201 toward the rear substrate 211. Preferably, the first optical layer 40 may substantially totally reflect incident light.

For example, as shown in FIG. 5, a part of light generated in the discharge cell may be reflected by the front substrate 201 and may be incident to the first optical layer 40. Light incident on the first optical layer 40 may be reflected by the first optical layer 40 and may be emitted back to the outside of the panel. Accordingly, as shown in FIG. 6B, the size of the bezel area 410 may be visually smaller than it actually is.

Alternatively, as shown in FIG. 7, the first optical layer 40 may be disposed between the passivation layer 205 and the seal layer 400 disposed on the upper dielectric layer 204.

Alternatively, as in the case of FIG. 8, the first optical layer 40 may include a portion disposed on the same layer as the first electrodes 202 and 203. In this case, the first optical layer 40 may include a portion disposed between the front substrate 201 and the upper dielectric layer 204.

On the other hand, it may be desirable that the first optical layer 40 covers the seal layer 400 sufficiently to prevent the viewer from recognizing the seal layer 400. To this end, as shown in FIG. 9, it may be preferable to make the width T10 of the first optical layer 40 larger than the width T20 of the seal layer 400.

Meanwhile, as shown in FIG. 10, it may be preferable to arrange a second optical layer 42 overlapping the first optical layer 40 on the front substrate 201.

The second optical layer 42 may reflect some of the light emitted from the panel and transmit some of the light. To this end, the second optical layer 42 may be a half mirror or a polarization filter. Alternatively, the second optical layer 42 may be an optical sheet including a plurality of protrusions on a surface thereof.

Since the second optical layer 42 corresponds to the first optical layer 40, similarly to the first optical layer 40, the width T30 of the second optical layer 42 is the line width T20 of the real layer 400. Can be greater than

As shown in FIG. 11, the second optical layer 42 transmits a part of light emitted from the panel, and reflects a part of the second optical layer 42 to enter the first optical layer 40. Then, the first optical layer 40 may reflect the light reflected by the second optical layer 42 to emit to the outside of the panel. Accordingly, the size of the bezel region may be visually reduced as in the case of FIG. 6.

In addition, the second optical layer 42 may be an optical sheet 50 including a plurality of protrusions 51 on the surface as shown in FIG. 12.

The plurality of protrusions 51 may refracted incident light at a predetermined angle. For this purpose, the protrusions 51 may have a triangular shape. Here, the meaning that the protrusion 51 has a triangular shape may mean that the shape of the protrusion 51 is not only a mathematically perfect triangle, but also that the shape of the protrusion 51 may be substantially triangular.

Here, the protrusion 51 may serve as a kind of prism because it serves to refract light at a predetermined angle.

The protruding portion 51 is capable of refracting light emitted from the panel at a corrected angle. Accordingly, the size of the bezel area can be visually reduced. In addition, the protrusion 51 may reflect light incident at a predetermined angle so that the protrusion 51 is incident on the first optical layer 40. As such, the first optical layer 40 reflects the light reflected by the optical sheet 50 back to the outside of the panel to increase the effect of visually reducing the size of the bezel area.

13 to 22 are views for explaining the case where the real layer has light transmittance. In the following, description of the parts described above in detail will be omitted.

Referring to FIG. 13, the seal layer 400 may include a light transmissive material, and thus may have a light transmissive characteristic. For example, the seal layer 400 may include at least one of glass particles and an optical fiber to have light transmittance. As a result, the seal layer 400 may be substantially translucent. Hereinafter, the seal layer 400 will be described as translucent in the sense that the seal layer 400 has light transmittance.

In addition, it will be described that the seal layer 400 includes an optical fiber 1300 as shown in FIG. 13B to have light transmittance.

As such, when the seal layer 400 is translucent, some of the light emitted from the discharge cells may be emitted to the outside of the panel through the seal layer 400. For example, as shown in FIG. 14, light emitted from the outermost discharge cell may be emitted to the outside of the panel by taking the optical fiber 1300 included in the seal layer 400.

Accordingly, as shown in FIG. 6, the size of the bezel area may be visually reduced.

On the other hand, when the seal layer 400 is translucent as shown in FIG. 15, the light emitter 1310 may be disposed at a position overlapping with the seal layer 400 on the rear surface of the rear substrate 211. The light emitting unit 1310 may be a light emitting diode (LED).

The light emitting unit 1310 may emit predetermined light, for example, red (R), green (G), and blue (B) light, and the light emitted by the light emitting unit 1310 may be externally transmitted through the real layer 400. Can be divergent. Then, the image may be implemented at a position corresponding to the real layer 400, and thus the viewer may feel that the size of the bezel area is sufficiently small. In other words, a predetermined image may be implemented in the region where the real layer 400 is formed by using the light emitter 1310.

As illustrated in FIG. 16, a region in which the light emitter 1310 is disposed may be referred to as a light emitting diode region LDA, and a region in which general discharge cells are disposed may be referred to as a discharge cell region DCA.

In addition, in order to implement an image using the light emitter 1310, the driver 1600 may include the second drivers 1620 and 1620 for driving the light emitter 1310 and the first driver for driving general discharge cells. , 1610).

For example, when a resolution of 1024 x 768 is implemented, an image corresponding to 1023 is implemented by discharge cells arranged in the discharge cell region DCA, and an image corresponding to 1 is arranged in the light emitting diode region LDA. The light emitting unit 1310 may be implemented.

The lower dielectric layer 215 is omitted in an area where the light emitter 1310 is disposed so that the light emitted from the light emitter 1310 is transmitted through the rear substrate 211 and the front substrate 201 to the outside of the panel more effectively. It is possible to do In other words, since the light emitter 1310 is disposed in a region overlapping with the seal layer 400, the lower dielectric layer 215 may be omitted from the region overlapping with the seal layer 400.

In addition, the light emitter 1310 may emit light different from that emitted by adjacent discharge cells. For example, when the discharge cells adjacent to FIG. 18 and the light emitting unit 1310 emit green (G) light, the light emitting unit 1310 may emit blue (B) light. As such, the light emitter 1310 may emit light of one of red (R), green (G), and blue (B) to form two adjacent discharge cells and one pixel.

Alternatively, as illustrated in FIG. 19, the light emitting unit 1310 may include a white light emitting diode emitting white (W) light. In this case, in order to realize an image in a region where the real layer 400 is formed, the real layer 400 may have a color layer having at least one color of red (R), green (G), and blue (B). May include). For example, when the seal layer 400 includes a blue color layer, white light emitted from the light emitting unit 1310 may be converted into blue light while passing through the seal layer 400 to implement a predetermined image.

Alternatively, as illustrated in FIG. 20, a light emitting diode area 1900 in which a plurality of light emitting parts are disposed may be disposed on a long side of the panel. In the case of FIG. 16, the plurality of light emitting parts may be disposed on the short side of the panel.

In this case, the light emitting part may include a first light emitting part 1910 emitting red (R) light, a second light emitting part 1920 emitting green (G) light, and a third light emitting part emitting blue (B) light ( 1930). The first light emitting unit 1910 is disposed adjacent to the discharge cell that emits red light, the second light emitting unit 1920 is disposed adjacent to the discharge cell that emits green light, and the third light emitting unit 1930 emits blue light. The discharge cells may be disposed adjacent to the discharge cells.

As such, it may be possible for the first light emitting unit 1910, the second light emitting unit 1920, and the third light emitting unit 1930 to form a single pixel.

Alternatively, as shown in FIG. 21, the outermost partition 2100 adjacent to the solid layer 400 in the partition 212 may also have light transparency. To this end, the outermost partition 2100 may also include a material such as glass particles or an optical fiber. In this case, since the light emitted from the outermost discharge cell can pass through the translucent outer partition 2100 and the translucent seal layer 400 to the outside of the panel as shown in FIG. 22, the size of the bezel region is reduced. Visual effects can be obtained.

23 to 34 illustrate a multi-plasma display panel. In the following, description of the parts described above in detail will be omitted. For example, all of the features of the plasma display panel described above with reference to FIGS. 1 to 22 may be applied to the following multi-plasma display apparatus.

Referring to FIG. 23, as shown in (a), the multi-plasma display apparatus 10 may include a plurality of plasma display panels 100, 110, 120, and 130 disposed adjacent to each other.

The first-first driving unit 101 and the second-first driving unit 102 may supply driving signals to the first panel 100 among the plurality of plasma display panels 100 to 130. Here, the first-first driving unit 101 and the first-second driving unit 102 may be merged into one integrated driving unit.

In addition, the 2-1 driving unit 111 and the 2-2 driving unit 112 may supply driving signals to the second panel 110.

As described above, it is possible to set different driving units to supply driving signals to the plasma display panels 100, 110, 120, and 130, respectively.

In addition, seam portions 140 and 150 may be formed between two adjacent plasma display panels. The seam portions 140 and 150 may be referred to as an area between two adjacent plasma display panels.

Since the multi-plasma display apparatus 10 implements an image by arranging individual plasma display panels 100 to 130 adjacent to each other, Seam 140 and 150 are formed between two adjacent plasma display panels 100 to 130. Can be.

In addition, each of the plasma display panels 100 to 130 may include first optical layers 40A and 40B at a boundary portion between the two panels.

Accordingly, in the multi-plasma display apparatus according to the present invention, since each panel includes the first optical layers 40A and 40B at the boundary portion, the portion where no image is displayed, that is, the first and second seam portions 140 and 150 of It is possible to reduce the size, thereby making the image implemented in two adjacent display panels appear more natural. Accordingly, the image quality of the image implemented by the multi display apparatus can be improved.

Therefore, it may be desirable to apply the plasma display panel described above with reference to FIGS. 1 to 22 to a multi-plasma display apparatus.

In addition, as shown in FIG. 24, two adjacent panels may include first optical layers 40A and 40B and second optical layers 42A and 42B at boundary portions, respectively. Here, the regions where the first optical layers 40A and 40B and the second optical layers 42A and 42B are formed may be referred to as seam portions 140 and 150.

For example, as shown in FIG. 24, the first optical layer 40A and the second optical layer 42A are not formed in the region overlapping with the seal layer 400A on one side in the cross section of the first panel, and the seal layer on the other side ( The first optical layer 40A and the second optical layer 42A may be formed in an area overlapping the 400A.

In addition, the first optical layer 40B and the second optical layer 42B are not formed in the region overlapping with the seal layer 400B on one side in the cross section of the second panel adjacent to the first panel, and the seal layer 400B on the other side is not formed. ), The first optical layer 40B and the second optical layer 42B may be formed.

Here, the other side of the first panel and the other side of the second panel are disposed to face each other.

On the other hand, as shown in FIG. 25, the second optical layer is not separately formed on the adjacent first panel and the second panel, respectively, and is commonly overlapped with the first panel and the second panel at the boundary between the first panel and the second panel. It is possible to form the optical sheets 500, 510. In this case, the optical sheets 500 and 510 may be attached to the boundary between the first panel and the second panel.

For example, as shown in FIG. 26, in the multi-plasma display apparatus according to the present invention, the first main frame 2700 is disposed on the rear surface of the first panel 100, that is, on the rear surface of the rear substrate of the first panel 100. The second main frame 2710 is disposed at the rear of the second panel 110, the third main frame 2720 is disposed at the rear of the third panel 120, and the rear of the fourth panel 130 is disposed at the rear of the third panel 120. The fourth main frame 2730 may be disposed.

A driving board for supplying driving signals to the first, second, third and fourth panels 100 to 130 may be disposed in the first, second, third and fourth main frames 2700 to 2730.

In addition, the first optical sheet 500 is attached to the boundary between the first panel 100 and the second panel 110 and the boundary between the third panel 120 and the fourth panel 130, and the first panel. The second optical sheet 510 may be attached to the boundary between the 100 and the third panel 120 and the boundary between the second panel 110 and the fourth panel 130.

Here, the first and second optical sheets 500 and 510 may be half mirrors, polarization filters, or optical sheets including protrusions as illustrated in FIG. 12.

The optical sheets 500 and 510 may include a plurality of protrusions 501 and 502 on the surface as shown in FIG. 27.

The protrusions 501 and 502 may refracted incident light at a predetermined angle. For this purpose, the protrusions 501 and 502 may have a triangular shape. Here, the meaning that the protrusions 501 and 502 have a triangular shape means that not only the shape of the protrusions 501 and 502 is a mathematically perfect triangle, but that the shape of the protrusions 501 and 502 is substantially triangular in shape. Can mean.

For example, suppose that the seam portions 140 and 150 having a width of W3 are disposed below the optical sheets 500 and 510 as shown in FIG. 27.

In this case, the light starting from the first point P1 of the seam portions 140 and 150 travels along the first path PT1 through the first protrusion 501 among the plurality of protrusions 501 and 502. Light starting at the second point P2 of the seam portions 140 and 150 may travel along the second path PT2 through the second protrusion 502 of the plurality of protrusions 501 and 502.

Accordingly, the observer perceives the width of the seam portions 140 and 150 as W2 smaller than W3.

Referring to FIG. 28, the optical sheets 500 and 501 overlap the first region S1 overlapping the front substrate 201A of the first panel and the front substrate 201B of the second panel. It may include a second area (S2).

In addition, first protrusions 501 may be formed in the first region S1, and second protrusions 502 may be formed in the second region S2.

In addition, the first protrusion 501 and the second protrusion 502 may have different shapes in order to refract light in different directions.

For example, as shown in FIG. 28, the second protrusions 502 adjacent to the first portion S1 have a shape inclined toward the second panel, and the first protrusions 501 adjacent to the second portion S2 may be formed of a first protrusion S501. It is possible to have a shape inclined towards one panel.

Referring to FIG. 29, the optical sheets 500 and 510 may overlap the seal layers 400A and 400B of two adjacent plasma display panels, respectively. Here, the 400 A seal layer is called the first seal layer, the 400 B seal layer is called the second seal layer, and the first panel includes the first seal layer 400A, and the second panel includes the second seal layer 400B. Suppose

The line widths W1 of the optical sheets 500 and 510 are formed at both ends of the first panel 400A, adjacent to the partition wall 212A of the first panel, and at both ends of the second chamber 400B. It may be larger than the distance L1 between the partition 212B and the adjacent end. In addition, the line width W1 of the optical sheets 500 and 510 may be smaller than the distance L2 between the outermost partition 212A of the first panel and the outermost partition 212B of the second panel.

Accordingly, the optical sheets 500 and 510 extend in the center direction of the first panel by more than E1 in comparison with the first seal layer 400A, and in the center direction of the second panel by E2 in comparison with the second seal layer 400B. Can be further extended.

In addition, the optical sheets 500 and 510 may not overlap the discharge cells of the first panel while overlapping the seal layer 400A of the first panel. Preferably, the optical sheets 500 and 510 may overlap the seal layer 400A of the first panel while not overlapping the phosphor layer formed in the discharge cell of the first panel. In addition, the optical sheets 500 and 510 may overlap the seal layer 400B of the second panel while not overlapping the discharge cells of the second panel.

To this end, one end EDGE1 of the optical sheets 500 and 510 is positioned between the outermost partition 212A of the first panel and the first seal layer 400A, and the other end of the optical sheets 500 and 510. EDGE2 may be located between the outermost partition 212B of the second panel and the second seal layer 400B.

In this case, it is possible to visually reduce the size of the boundary between the first panel and the second panel while suppressing distortion of the image at the boundary between the first panel and the second panel.

Alternatively, referring to FIGS. 30 to 31, the optical sheets 500 and 510 may include a plurality of recesses 2900 and 2910. Comparing the optical sheets 500 and 510 of FIGS. 30 to 31 with those of the optical sheets 500 and 510 of FIG. 27, the optical sheets 500 and 510 of FIGS. It can be seen that it is replaced by a prism in the form.

Even when the optical sheets 500 and 510 of FIGS. 30 to 31 are used, the boundary portions of at least two adjacent plasma display panels may be visually reduced.

The first depression 2900 of FIGS. 30 to 31 may correspond to the first protrusion 501 of FIG. 27, and the second depression 2910 may correspond to the second protrusion 502.

In addition, the optical sheets 500 and 510 may be disposed such that portions where the recesses 2900. 2910 are formed are directed toward the seam portion.

Alternatively, as shown in FIG. 32A, the optical sheets 500 and 510 may include a stacked first layer 3100 and a second layer 3110.

The first layer 3100 may include a first prism in the form of a recessed surface, and the second layer 3110 may include a second prism in the form of a protrusion on the surface. In addition, the first layer 3100 and the second layer 3110 may be stacked in such a manner that the first prism and the second prism are engaged with each other.

Even when the optical sheets 500 and 510 of FIG. 32 are used, the boundary portions of at least two adjacent plasma display panels may be visually reduced.

For this purpose, as shown in FIG. 32B, the second layer 3110 is disposed at the boundary between the first panel and the second panel, and the first layer 3100 is disposed on the second layer 3110. It is possible. In addition, it may be preferable that the refractive index of the first layer 3100 is smaller than the refractive index of the second layer 3110.

Alternatively, as shown in FIG. 33A, the center portions of the optical sheets 500 and 510 may be recessed and a plurality of prisms may be formed in the center portions of the recessed optical sheets 500 and 510.

Alternatively, as shown in FIG. 33B, the optical sheets 500 and 510 may include a single recessed part.

In this case, as illustrated in FIG. 34, the optical sheets 500 and 510 may be disposed so that the recessed portions face the boundary portions of the adjacent panels.

Even in this case, the size of the boundary portions of the adjacent panels, that is, the seam portions 140 and 150, can be made small by the optical action.

As such, the technical configuration of the present invention described above can be understood by those skilled in the art that the present invention can be implemented in other specific forms without changing the technical spirit or essential features of the present invention.

Therefore, the exemplary embodiments described above are to be understood as illustrative and not restrictive in all respects, and the scope of the present invention is indicated by the appended claims rather than the foregoing detailed description, and the meaning and scope of the claims are as follows. And all changes or modifications derived from the equivalent concept should be interpreted as being included in the scope of the present invention.

1 to 3 are views for explaining the structure and driving method of the plasma display panel;

4 to 12 are views for explaining the optical layer;

13 to 22 are views for explaining the case where the real layer has light transmittance; And

23 to 34 illustrate a multi-plasma display panel.

Claims (27)

Front substrate; A rear substrate disposed to face the front substrate; A seal layer disposed between the front substrate and the rear substrate; And A first optical layer disposed between the real layer and the front substrate; Plasma display panel comprising a. The method of claim 1, And the first optical layer is a mirror for reflecting light incident from the front substrate toward the rear substrate. The method of claim 1, An upper dielectric layer is disposed on the front substrate, and the first optical layer is disposed between the upper dielectric layer and the seal layer. The method of claim 3, wherein A protective layer is disposed on the upper dielectric layer, and the first optical layer is disposed between the protective layer and the seal layer. The method of claim 1, A first electrode disposed on the front substrate, and the first optical layer includes a portion disposed on the same layer as the first electrode. The method of claim 1, And a line width of the first optical layer is larger than a line width of the real layer. Front substrate; A rear substrate disposed to face the front substrate; A seal layer disposed between the front substrate and the rear substrate; A first optical layer disposed between the real layer and the front substrate; A second optical layer disposed at a position overlapping with the first optical layer on a front surface of the front substrate; Plasma display panel comprising a. The method of claim 7, wherein And the first optical layer is a mirror for reflecting light incident from the front substrate toward the rear substrate. The method of claim 7, wherein And the second optical layer is a half mirror. The method of claim 7, wherein And the second optical layer is a polarization filter. The method of claim 7, wherein The second optical layer includes a plurality of protrusions on the surface. The method of claim 7, wherein And a line width of the first optical layer is larger than a line width of the real layer. The method of claim 7, wherein And a line width of the second optical layer is larger than a line width of the real layer. Front substrate; A rear substrate disposed to face the front substrate; And A seal layer disposed between the front substrate and the rear substrate and having a light transmission property; Plasma display panel comprising a. The method of claim 14, And a light emitting part disposed at a position overlapping with the real layer on a rear surface of the rear substrate. The method of claim 14, And the seal layer comprises at least one of glass particles and an optical fiber. The method of claim 15, The light emitting unit is a plasma display panel. The method of claim 17, The light emitting diode includes at least one of blue, green and red light emitting diodes. The method of claim 17, The real layer includes at least one color layer of blue, green, and red, The light emitting diode includes a white light emitting diode. The method of claim 14, A lower dielectric layer is disposed on the rear substrate, And the lower dielectric layer is omitted in an area overlapping the seal layer. Front substrate; A rear substrate disposed to face the front substrate; Barrier ribs disposed between the front substrate and the rear substrate; And A seal layer disposed between the front substrate and the rear substrate and having a light transmission property; Including, And an outermost partition wall adjacent to the seal layer is light transmissive. The method of claim 21, And the seal layer comprises at least one of glass particles and an optical fiber. The method of claim 21, The outermost partition wall includes at least one of glass particles and an optical fiber. A multi-plasma display panel comprising a plurality of plasma display panels disposed adjacent to each other, Each of the plurality of plasma display panels Front substrate; A rear substrate disposed to face the front substrate; A seal layer disposed between the front substrate and the rear substrate; And A first optical layer disposed between the real layer and the front substrate; Multi-plasma display panel comprising a. In the multi-plasma display panel comprising a plurality of plasma display panel disposed adjacent, Each of the plurality of plasma display panels Front substrate; A rear substrate disposed to face the front substrate; A seal layer disposed between the front substrate and the rear substrate; A first optical layer disposed between the real layer and the front substrate; A second optical layer disposed at a position overlapping with the first optical layer on a front surface of the front substrate; Multi-plasma display panel comprising a. A multi-plasma display panel comprising a plurality of plasma display panels disposed adjacent to each other, Each of the plurality of plasma display panels Front substrate; A rear substrate disposed to face the front substrate; And A seal layer disposed between the front substrate and the rear substrate and having a light transmission property; Multi-plasma display panel comprising a. A multi-plasma display panel comprising a plurality of plasma display panels disposed adjacent to each other, Each of the plurality of plasma display panels Front substrate; A rear substrate disposed to face the front substrate; Barrier ribs disposed between the front substrate and the rear substrate; And A seal layer disposed between the front substrate and the rear substrate and having a light transmission property; Including, The outermost partition wall adjacent to the seal layer has a light transmission property.

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