KR102449685B1 - Stereoscopic image display device - Google Patents

Abstract

The present invention discloses a stereoscopic image display device. The disclosed stereoscopic image display device of the present invention includes a substrate in which a plurality of pixels composed of red, green and blue sub-pixels are partitioned, an array layer disposed on the substrate, and a micro pattern disposed on the array layer. layer, wherein the pixels are disposed in different directions on the micro-pattern layer, and include organic light emitting diodes disposed in each sub-pixel, so that a three-dimensional image or a multi-image can be implemented without reducing luminance. .

Description

Stereoscopic image display device {STEREOSCOPIC IMAGE DISPLAY DEVICE}

The present invention relates to a stereoscopic image display device.

Recently, as interest in 3D stereoscopic images increases, various stereoscopic image display devices have been developed. In general, the three-dimensional effect perceived by a person is caused by the degree of change in the thickness of the lens according to the position of the object to be observed, the angle difference between both eyes and the object, the difference in the position and shape of the object visible to the left and right eyes, and the movement of the object. It is caused by the complex action of jet lag and various other psychological and memory effects. Among them, binocular disparity, which occurs when two human eyes are positioned about 6-7 cm apart in the horizontal direction, is the most important factor for three-dimensional effect. That is, when the images entering the two eyes have different images due to the binocular disparity, the human brain precisely fuses these two pieces of information to feel the original 3D stereoscopic image.

There are two types of stereoscopic image realization methods using binocular disparity: the glasses method and the glasses-free method. The glasses method displays left and right parallax images with different polarization directions on a display panel, and implements a 3D image using polarized glasses or liquid crystal shutter glasses. In contrast, the glasses-free method is a method that does not require separate glasses, and there are a Parallax Barrier type and a Lenticular type, and studies on these are being actively conducted recently.

The parallax barrier type stereoscopic image display device spatially separates light incident from the image panel into light of a left eye image and light of a right eye image by using a barrier panel as shown in FIG. 1 . The barrier panel and the image panel may be integrated into the display device.

The barrier panel includes a switchable barrier to selectively block light incident from the image panel. As shown in FIG. 2 , the switchable barrier includes a liquid crystal layer LC and a first electrode pattern E1 and a second electrode pattern E2 formed to face each other with the liquid crystal layer LC interposed therebetween. A driving voltage for driving the liquid crystal layer LC is applied to the first electrode pattern E1 , and a reference voltage is applied to the second electrode pattern E2 . In the switchable barrier, when the liquid crystal layer LC is driven to block light by the driving voltage applied to the first electrode pattern E1, the liquid crystal layer LC becomes a blocking region, and the first electrode pattern E1 ), when the liquid crystal layer LC is driven to transmit light by a driving voltage applied to the liquid crystal layer LC, the liquid crystal layer LC becomes a transmissive region.

The barrier panel type stereoscopic image display device has a problem in that luminance is lowered because the barrier panel is disposed on the front surface of the display panel. In particular, in the case of a liquid crystal display, a polarizing plate is also attached to the barrier panel, and since both the left eye image and the right eye image are images realized by passing the polarizing plate, the decrease in luminance is greater.

For example, when a liquid crystal display device has a transmittance of 77% for realizing a two-dimensional image, when a barrier panel is attached to implement a three-dimensional image, it has a transmittance of 27%.

In addition, an organic light emitting diode (OLED), which has recently been spotlighted as a flat panel display device, has a self-emitting organic light emitting diode that emits light by itself in each sub-pixel, unlike a liquid crystal display device, and a separate polarizing plate is used. do not attach

However, when a barrier panel is attached to implement a 3D stereoscopic image or a multi-view image using an organic light emitting display device, the luminance degradation that has occurred in the liquid crystal display device is similarly generated.

An object of the present invention is to provide a stereoscopic image display device capable of implementing a stereoscopic image or multi-image without attaching a barrier panel by arranging a micro pattern layer in a display panel and arranging organic light emitting diodes on an inclined surface of a prism pattern. .

In addition, the present invention arranges a micro pattern layer in which prism patterns having inclined surfaces in different directions are formed on the array layer on which the thin film transistors are disposed, and red (R) and green (G) on the inclined surfaces of each prism pattern. Another object of the present invention is to provide a stereoscopic image display device capable of realizing a stereoscopic image or a multi-image without reducing luminance by arranging unit pixels composed of blue (B) sub-pixels.

The stereoscopic image display device of the present invention for solving the problems of the prior art as described above includes a substrate in which a plurality of pixels composed of red, green, and blue sub-pixels are partitioned, and an array layer disposed on the substrate, , a micro-pattern layer disposed on the array layer, and the pixels are disposed in different directions on the micro-pattern layer, and an organic light emitting diode disposed in each sub-pixel.

In addition, a plurality of prism patterns having a first inclined surface and a second inclined surface having different inclination angles are disposed on the micro-pattern layer, and the organic light emitting diode is disposed on the first inclined surface and the second inclined surface, and the micro A plurality of concave-convex patterns having a first surface, a second surface, and a third surface having different inclination directions are disposed on the pattern layer, and the organic light emitting diodes are disposed on the first to third surfaces, respectively, and the first The surface and the second surface are symmetrical to each other with the third surface interposed therebetween, and the material of the micro-pattern layer is selected from an acryl-based organic compound, benzo-cyclo-butene (BCB), or perfluorocyclobutane (PFCB). There is one, and the material of the micro-pattern layer is silicon oxide (SiO2) or silicon nitride (SiNx), so that a stereoscopic image or a multi-image can be implemented without attaching a barrier panel.

The stereoscopic image display device according to the present invention has the effect of realizing a stereoscopic image or a multi-image without attaching a barrier panel by arranging a micro pattern layer in a display panel and arranging organic light emitting diodes on an inclined surface of the prism pattern.

In the stereoscopic image display device according to the present invention, micro-pattern layers having slopes in different directions are disposed on an array layer in which thin film transistors are disposed, and red (R) and green (G) layers are disposed on the slopes of each prism pattern. and by arranging unit pixels composed of blue (B) sub-pixels, there is an effect of realizing a stereoscopic image or a multi-image without lowering luminance.

1 is a diagram schematically illustrating a conventional barrier panel type stereoscopic image display device.
2 is a diagram illustrating a conventional stereoscopic image display device including a barrier panel and a display panel.
3 is a diagram illustrating a structure of a display panel of a stereoscopic image display device according to the present invention.
FIG. 4 is an enlarged view of a prism pattern of a micro-pattern layer formed on the display panel of FIG. 3 .
5 is a diagram illustrating a structure of a display panel of a stereoscopic image display device according to another embodiment of the present invention.
6A to 6D are views illustrating a process of forming a micro-pattern layer disposed in the present invention.
7 is a block diagram of a stereoscopic image display device according to the present invention.
8A and 8B are diagrams for explaining a method of driving a stereoscopic image display device according to the present invention according to FIG. 3 .
9 is a view for explaining a method of driving a stereoscopic image display device according to the present invention according to FIG. 5 .
10 and 11 are diagrams illustrating images implemented by the stereoscopic image display device according to the present invention.

Advantages and features of the present invention and methods of achieving them will become apparent with reference to the embodiments described below in detail in conjunction with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below, but will be implemented in various different forms, and only these embodiments allow the disclosure of the present invention to be complete, and common knowledge in the technical field to which the present invention belongs It is provided to fully inform the possessor of the scope of the invention, and the present invention is only defined by the scope of the claims.

The shapes, sizes, proportions, angles, numbers, etc. disclosed in the drawings for explaining the embodiments of the present invention are illustrative and the present invention is not limited to the illustrated matters. Like reference numerals refer to like elements throughout. In addition, in describing the present invention, if it is determined that a detailed description of a related known technology may unnecessarily obscure the subject matter of the present invention, the detailed description thereof will be omitted.

When 'including', 'having', 'consisting', etc. mentioned in this specification are used, other parts may be added unless 'only' is used. When a component is expressed in the singular, the case in which the plural is included is included unless specifically stated otherwise.

In interpreting the components, it is interpreted as including an error range even if there is no separate explicit description.

In the case of a description of the positional relationship, for example, when the positional relationship of two parts is described as 'on', 'on', 'on', 'beside', etc., 'right' Alternatively, one or more other parts may be positioned between two parts unless 'directly' is used.

In the case of a description of a temporal relationship, for example, when the temporal relationship is described as 'after', 'following', 'after', 'before', etc., 'immediately' or 'directly' Unless ' is used, cases that are not continuous may be included.

Although the first, second, etc. are used to describe various components, these components are not limited by these terms. These terms are only used to distinguish one component from another. Accordingly, the first component mentioned below may be the second component within the spirit of the present invention.

Each feature of the various embodiments of the present invention may be partially or wholly combined or combined with each other, technically various interlocking and driving are possible, and each of the embodiments may be implemented independently of each other or may be implemented together in a related relationship. may be

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. And in the drawings, the size and thickness of the device may be exaggerated for convenience. Like reference numerals refer to like elements throughout.

3 is a view showing the structure of a display panel of a stereoscopic image display device according to the present invention, and FIG. 4 is an enlarged view of a prism pattern of a micro-pattern layer formed on the display panel of FIG. 3 .

3 and 4, in the stereoscopic image display device of the present invention, the display is divided into an active area (AA) and a non-active area (NA) along the circumference of the display area AA. including panel.

The display area AA includes a plurality of unit pixels in which a red sub-pixel R-SP, a green sub-pixel G-SP, and a blue sub-pixel B-SP constitute one unit pixel (P). (P) is placed.

In a display area of the display panel, an array layer (AL) including a plurality of thin film transistors (TFTs) operating as a driving switching element (DR-Tr) and a switching element (SW-Tr) is provided on the first substrate 101 ) is formed on

Although not shown in the drawing, in the display area AA, a plurality of data lines DL, scan lines SL, and power lines PL are cross-arranged to define sub-pixels, and a switching element is provided in each sub-pixel area. (SW-Tr) and thin film transistors (TFTs) serving as driving switching elements DR-Tr are disposed. The driving switching element DR-Tr is electrically connected to the organic light emitting diode 114 .

The driving switching element DR-Tr includes a gate electrode G, an active layer ACT, a source electrode S, a drain electrode D, and first and second disposed above and below the gate electrode G. Insulating layers 103 and 104 are included.

A micro-pattern layer 106 is disposed on the array layer AL, and the micro-pattern layer 106 includes a plurality of prism patterns 106a.

The prism pattern 106a has a first inclined surface S1 and a second inclined surface S2, and a unit pixel (P) or a plurality of unit pixels (P) are formed on the first and second inclined surfaces S1 and S2. ) are partitioned, and an organic light emitting diode 114 is disposed in each of the red sub-pixels R-SP, the green sub-pixels G-SP, and the blue sub-pixels B-SP constituting the unit pixel P. do.

Accordingly, the organic light emitting diodes 114 respectively disposed on the first inclined surface S1 and the second inclined surface S2 of the prism pattern 106a emit light in different directions to realize different images.

That is, in the stereoscopic image display device of the present invention, the first image View1 is displayed by the unit pixels P disposed on the first inclined surface S1 of the prism pattern 106a, and the second inclined surface S2 is displayed. ), the second image View2 may be displayed by the unit pixels P disposed therein.

For example, the first image View1 is focused on the observer's right eye and the second image View2 is focused on the observer's left eye to realize a 3D stereoscopic image, or the first image View1 and the second image By using the view as completely separate images, it is possible to implement different multi-view images depending on the viewing direction.

The inclination angles of the first and second inclined surfaces S1 and S2 of the prism pattern 106a may be adjusted by adjusting the angle θ of the vertex. When the vertex angle θ of the prism pattern 106a increases, the inclination angle decreases with respect to the surface of the array layer AL of the first and second inclined surfaces S1 and S2, and the vertex angle θ is As it decreases, the inclination angles of the first and second inclined surfaces S1 and S2 increase.

Therefore, since the direction of light emitted from the first and second images View1 and View2 can be adjusted according to the inclination angles of the first and second inclined surfaces S1 and S2, a 3D stereoscopic image or a multi-view image can be viewed. The distance between the viewer and the display panel to be viewed can also be adjusted.

In addition, the organic light emitting diode 114 disposed in the sub-pixel region includes a first electrode 111 serving as an anode, a second electrode 113 serving as a cathode, and the first and second electrodes. and an organic light emitting layer 112 disposed between the electrodes 111 and 113 .

The organic light emitting layer 112 is formed in red (R), green (G), and blue (B) according to the red sub-pixel R-SP, green sub-pixel G-SP, and blue sub-pixel B-SP, respectively. ) a light emitting layer emitting light is used.

The first electrode 111 of the organic light emitting diode 114 is formed on the first and second inclined surfaces S1 and S2 of the prism pattern 106a, and each sub-pixel is partitioned by a bank layer 117 . do. Accordingly, the bank layer 117 is not disposed on the first electrode 111 corresponding to the sub-pixel region.

In addition, the first electrode 111 of the organic light emitting diode 114 is formed along the first and second inclined surfaces S1 and S2 of the prism pattern 106a through a contact hole (C: Contact Hole) in the lower portion. It is connected to the source electrode S of the arranged driving switching element DR-Tr. At this time, although not shown in the drawing, the drain electrode D of the driving switching element DR-Tr may be connected to the power supply voltage VDD.

In the drawings, the source electrode S and the drain electrode D of the driving switching element DR-Tr are distinguished, but the source electrode S and the drain electrode D may be referred to interchangeably.

That is, when the first electrode 111 and the drain electrode D of the organic light emitting diode 114 are electrically connected, the source electrode S is connected to the power supply voltage VDD.

As such, in the image display device according to the present invention, a micro-pattern layer is disposed in the display panel and organic light emitting diodes are disposed on the inclined surface of the prism pattern, so that a stereoscopic image or a multi-image can be realized without attaching a barrier panel. .

In the stereoscopic image display device according to the present invention, micro-pattern layers having slopes in different directions are disposed on an array layer in which thin film transistors are disposed, and red (R) and green (G) layers are disposed on the slopes of each prism pattern. and by arranging unit pixels composed of blue (B) sub-pixels, there is an effect of realizing a stereoscopic image or a multi-image without lowering luminance.

<Manufacturing method of stereoscopic image display device>

A method of manufacturing a stereoscopic image display device of the present invention will be described as follows.

First, a first substrate 101 made of a transparent insulating substrate is provided, a buffer layer 102 is formed on the first substrate 101, and then a semiconductor layer is formed on the entire surface of the first substrate 101, , a photolithography process and an etching process are performed to form the active pattern ACT of the driving switching element DR-Tr.

The semiconductor layer may be amorphous silicon or crystalline silicon. In addition, the semiconductor layer may be formed of an oxide semiconductor layer.

The oxide semiconductor layer may be formed of an amorphous oxide including at least one of indium (In), zinc (Zn), gallium (Ga), and hafnium (Hf). For example, when forming a Ga-In-Zn-O oxide semiconductor by a sputtering process, each target formed of In2O3, Ga3O3, and ZnO may be used, or a single target of Ga-In-Zn oxide may be used. In addition, when forming the hf-In-Zn-O oxide semiconductor by the sputtering process, each target formed of HfO2, In2O3 and ZnO is used, or a single target of Hf-In-Zn oxide is used. can

As described above, when the active pattern ACT is formed on the first substrate 101 , the first insulating layer 103 is formed on the entire surface of the first substrate 101 , and then the first insulating layer ( 103), a gate metal layer is formed by a sputtering process. The first insulating layer 103 may be made of silicon oxide (SiO2) or silicon nitride (SiNx).

Then, a photolithography process and an etching process are performed to form the gate electrode G of the driving switching element DR-Tr. In addition, a scan line (not shown) connected to the gate electrode G and a scan line pad (not shown) connected to an end of the scan line are formed.

The gate metal layer may include aluminum (Al), an aluminum alloy (Al alloy), tungsten (W), copper (Cu), nickel (Ni), chromium (Cr), molybdenum; At least one layer of a low-resistance opaque conductive material such as Mo), titanium (Ti), platinum (Pt), or tantalum (Ta) may be formed as a layer.

In addition, indium-tin-oxide (Indium Tin Oxide; ITO), indium-zinc-oxide (Indium Zinc Oxide; IZO), such as a transparent conductive material and an opaque conductive material may be formed in a multi-layer structure stacked.

Although the driving switching element DR-Tr is formed as a center in the above, since a plurality of switching elements SW-Tr are disposed in each sub-pixel region of the stereoscopic image display device, the gate electrode of the driving switching element DR-Tr (G) During formation, gate electrodes of other switching elements are also formed together.

As described above, when the gate electrode G is formed on the first insulating layer 103 , the second insulating layer ( SiO2 ) or silicon nitride (SiNx) is formed on the entire surface of the first substrate 101 . 104) is formed.

As described above, when the second insulating layer 104 is formed on the first substrate 101 , a mask process is performed to expose a portion of the active pattern ACT of the driving switching element DR-Tr through a contact hole process. proceed with The contact hole may be formed in both edge regions of the active pattern ACT with the gate electrode G interposed therebetween.

As described above, when the contact hole process for exposing a portion of the active pattern ACT of the driving switching element DR-Tr is completed, a source/drain metal layer is formed on the entire surface of the first substrate 101, and a photolithography process is performed. The source and drain electrodes S and D are formed through an over-etching process.

The source electrode S and the drain electrode D are electrically connected to the active pattern ACT through contact holes formed in the first and second insulating layers 103 and 104 .

The source/drain metal layer is a low-resistance opaque conductive material such as aluminum (Al), aluminum alloy, tungsten (W), copper (Cu), nickel (Ni), chromium (Cr), molybdenum (Mo), titanium, platinum, tantalum, etc. material can be used. In addition, a multilayer structure in which a transparent conductive material such as indium-tin-oxide and indium-zinc-oxide and an opaque conductive material are stacked may be formed.

Also, although not shown in the drawings, when the source and drain electrodes S and D are formed, a data line DL, a power line, and a data pad connected to the ends of the data line DL are simultaneously formed.

As described above, when the array layer AL including the driving switching element DR-Tr is formed on the first substrate 101 , the first and second inclined surfaces S1 and S1 are formed on the array layer AL. S2) to form a micro-pattern layer 106 in which the prism patterns 106a are formed.

The micro-pattern layer 106 is formed of an organic insulating material such as an acryl-based organic compound, benzo-cyclo-butene (BCB) or perfluorocyclobutane (PFCB), or silicon oxide (SiO2) or silicon nitride (SiNx) and It may be formed of the same inorganic insulating material.

The micro-patterned layer 106 will be described in detail with reference to FIGS. 6A to 6D below.

Then, the first and second inclined surfaces S1 and S2 of the prism pattern 106a corresponding to the red sub-pixel R-SP, the green sub-pixel G-SP, and the blue sub-pixel B-SP. An organic light emitting diode 114 is formed thereon.

The organic light emitting diode 114 is formed by forming aluminum (Al), silver (Ag) or an alloy thereof on the first substrate 101 by a sputtering method, and then performing a photolithography process and an etching process to form a red sub-pixel (R- A first electrode 111 serving as an anode is formed in units of SP), green sub-pixels G-SP, and blue sub-pixels B-SP.

The first electrode 111 is connected to the source electrode S of the driving switching element DR-TFT through the contact hole C formed on the first and second inclined surfaces S1 and S2 of the prism pattern 106a. is electrically connected to

As described above, when the first electrode 111 is formed on the prism pattern 106a, an organic layer is formed on the entire surface of the first substrate 101, and then, the red sub-pixel R-SP and the green sub-pixel The bank layer 117 is formed to expose the first electrode 111 in the (G-SP) and blue sub-pixel (B-SP) regions.

Then, an organic light emitting layer 112 is formed on the exposed first electrode 111 . The organic light emitting layer 112 is sequentially deposited on the first electrode 111 by continuously depositing a hole injection layer material, a hole transport layer material, a light emitting layer material, an electron transport layer material, and an electron injection layer material through a thermal evaporation process. It is formed of a hole injection layer (HIL), a hole transport layer (HTL), an emission layer (EML), an electron transport layer (ETL), and an electron injection layer (EIL).

The emission layer EML has red (R), green (G), and blue (B) colors corresponding to the red sub-pixel R-SP, the green sub-pixel G-SP, and the blue sub-pixel B-SP, respectively. A light emitting layer that emits light is formed.

As described above, when the organic light emitting layer 112 is formed on the first substrate 101 , the second electrode 113 serving as a cathode is formed on the entire surface of the first substrate 101 to form the organic light emitting diode 114 . ) to form

The second electrode 113 is formed of a transparent conductive material layer to transmit light generated from the organic light emitting layer 112 , and the transparent conductive material layer includes tin oxide (TO) and indium tin oxide (Indium). It may be Tin Oxide: ITO), Indium Zinc Oxide (IZO), or Indium Tin Zinc Oxide (ITZO).

As described above, when the organic light emitting diode 114 is formed on the first substrate 101 , the protective layer 202 and the second substrate 201 are formed to complete the stereoscopic image display device. In the protective layer 202 , a plurality of inorganic layers and organic layers may be alternately stacked, and the second substrate 201 may be a glass substrate or an encapsulation layer.

As described above, in the stereoscopic image display device according to the present invention, a micro-pattern layer is disposed in a display panel, and organic light emitting diodes are disposed on the inclined surface of the prism pattern to realize a 3D stereoscopic image without attaching a barrier panel as in the prior art, or It has the effect of being able to display an image.

In addition, the stereoscopic image display device according to the present invention is a display device in which an organic light emitting diode is disposed, and does not use a barrier panel to which a polarizing plate is attached to implement a three-dimensional image or a three-dimensional image. can have an effect.

FIG. 5 is a view showing the structure of a display panel of a stereoscopic image display device according to another embodiment of the present invention. As shown in FIG. 5 , a micro pattern layer 116 is formed on the first substrate 101 on which the array layer AL is formed. ) is formed.

The micro-pattern layer 116 includes concave-convex patterns 116a having first to third surfaces T1 , T2 , and T3 . The first surface T1 and the second surface T2 of the concave-convex pattern 116a are formed as inclined surfaces having a predetermined inclination angle similar to the surface of the prism pattern of FIG. 3 . The first surface T1 and the second surface T2 have a symmetrical structure with the third surface T3 interposed therebetween.

On the other hand, the third surface T3 is continuous at the edges of the first surface T1 and the second surface T2 and is parallel to the surface of the first substrate 101 .

In addition, on the first to third surfaces T1 , T2 , and T3 of the concave-convex pattern 116a, a unit of a red sub-pixel R-SP, a green sub-pixel G-SP, and a blue sub-pixel B-SP An organic light emitting diode is disposed.

Since the first surface T1 and the second surface T2 of the concave-convex pattern 116a are symmetrical inclined surfaces, the organic light emitting diodes disposed on the first surface T1 and the second surface T2, respectively. 114 emits light in different directions, thereby realizing different images.

In addition, since the third surface T3 is located between the first surface T2 and the second surface T2 and has a direction parallel to the first substrate 101 , the third surface T3 is disposed on the third surface T3 . The light generated from the organic light emitting diode 114 disposed on the surface is emitted in a direction perpendicular to the first substrate 101 .

That is, in the stereoscopic image display device of the present invention, the organic light emitting diodes 114 disposed on the first to third surfaces T1 , T2 , and T3 of the concave-convex pattern 116a emit light in different directions. Thus, different first to third images View1, View2, and View3 may be displayed.

6A to 6D are views illustrating a process of forming a micro-pattern layer disposed in the present invention.

Referring to FIGS. 6A to 6D together with FIGS. 3 and 4 , the first layer L1 and the second layer L2 are continuously formed. The first and second layers L1 and L2 are formed of an organic insulating material such as an acryl-based organic compound, benzo-cyclo-butene (BCB) or perfluorocyclobutane (PFCB), or silicon oxide (SiO2) or nitride. It may be formed of an inorganic insulating material such as silicon (SiNx).

Then, a photoresist film is formed on the second layer L2, and then an exposure and development process is performed to form a photoresist pattern PR, and the second layer L2 using the photoresist pattern PR as a mask. etch the Accordingly, the pattern layer PL is formed between the photoresist pattern PR and the first layer L1.

As described above, when the photoresist pattern PR and the pattern layer PL are formed on the first layer L1, an anisotropic wet etch process is performed using this as a mask to form the prism patterns PS. The formed micro-pattern layer (MPL) is formed.

As shown in the drawing, it can be seen that prism patterns PS having a predetermined inclined surface are formed along between the stacked photoresist pattern PR and the pattern layers PL.

As described above, when the prism patterns PS are formed, the photoresist pattern PR and the pattern layer PL are removed to form the micro pattern layer MPL.

As described above, the micro-pattern layer MPL having a plurality of prism patterns PS formed on the organic layer or the inorganic layer may be formed by performing the anisotropic wet etching process.

As described above, when the micro-pattern layer MPL on which the prism patterns PS are formed is formed, as described with reference to FIGS. 3 and 4 , the red sub-pixel R-SP, the green sub-pixel G-SP, and the blue color sub-pixel (G-SP). An organic light emitting diode is formed on the inclined surfaces of the prism pattern PS in units of the sub-pixels B-SP.

7 is a block diagram of a stereoscopic image display device according to the present invention, FIGS. 8A and 8B are diagrams for explaining a method of driving the stereoscopic image display device of the present invention according to FIG. 3, and FIG. A diagram for explaining a method of driving a stereoscopic image display device according to the present invention, and FIGS. 10 and 11 are diagrams showing images implemented by the stereoscopic image display device according to the present invention.

7 to 11 , a stereoscopic image display device according to an embodiment of the present invention includes a display panel 100 , a scan driver 110 , a data driver 120 , a timing controller 130 , and a multi-view image generator. 140 , a power supply voltage supply unit 160 , and a host system 150 .

The display panel 100 displays an image under the control of the timing controller 130 .

The data driver 120 includes a plurality of source drive ICs. The source drive ICs convert the stereoscopic image data DATA' input from the timing controller 130 into positive/negative gamma compensation voltages to generate positive/negative analog data voltages. The stereoscopic image data DATA′ may be image data for realizing a 3D stereoscopic image or multi-view image data for displaying different images in one image frame.

The positive/negative analog data voltages output from the source drive ICs are supplied to the data lines DL of the display panel 100 .

The scan driver 110 sequentially supplies scan pulses synchronized with the data voltage to the scan lines SL of the display panel 100 under the control of the timing controller 130 .

The scan driver 110 includes a plurality of scan drive integrated circuits each including a shift register, a level shifter for converting an output signal of the shift register into a swing width suitable for driving a switching element disposed in a sub-pixel, and an output buffer. can be composed of

The timing controller 130 outputs the gate driver control signal GCS to the scan driver 110 based on the stereoscopic image data DATA′ output from the multi-view image generator 140 and the timing signals, and the data driver The control signal DCS is output to the data driver 120 . The timing signals include a vertical synchronization signal, a horizontal synchronization signal, a data enable signal, and a dot clock. The gate driver control signal includes a start pulse, a shift clock, and an output enable signal.

The data driver control signal includes a source start pulse, a source sampling clock, a source output enable signal, a polarity control signal, and the like. The source start pulse controls the data sampling start time of the data driver 120 . The source sampling clock is a clock signal that controls the sampling operation of the data driver 120 based on a rising or falling edge.

The host system 150 supplies the image data DATA to the multi-view image generator 140 through an interface such as a low voltage differential signaling (LVDS) interface or a transition minimized differential signaling (TMDS) interface. The image data DATA may be image data for different images.

In addition, the host system 150 converts three-dimensional (3D) stereoscopic image data DATA′ based on the image data DATA, or a plurality of different image data DATA supplied to the host system 150 . is converted into multi-view image data to be simultaneously supplied to the display panel 100 .

The multi-view image generator 140 supplies the converted stereoscopic image data DATA′ to the timing controller 130 .

8A and 8B illustrate a case in which stereoscopic image data DATA′ is supplied to the display panel 100 on which the organic light emitting diode OLED is disposed as shown in FIG. 3 . As described in FIG. 3 , on the first inclined surface S1 of the prism pattern 106a , the first sub-pixel R-SP, the green sub-pixel G-SP, and the blue sub-pixel B-SP are included. The pixel P1 is formed, and the second pixel P2 is also formed on the second inclined surface S2 in the same shape.

The stereoscopic image data (first and second image data DATA′) supplied from the multi-view image generator 140 includes a data line DL corresponding to the sub-pixels of the first pixel P1 and a second It is alternately supplied to the data lines DL corresponding to the sub-pixels of the pixel P2 .

Accordingly, the first pixel P1 , the third pixel P3 , . . . The first image data is supplied to the fields, and the second image data is supplied to the second pixel P2 , the fourth pixel P4 , ... arranged on the second inclined surface S2 .

However, as shown in FIG. 8B , when a plurality of pixels P1 , P2/P3 , and P4 are respectively disposed on the first inclined surface S1 and the second inclined surface S2 , for example, on the first inclined surface S1 , When the first and second pixels P1 and P2 are disposed and the third and fourth pixels P3 and P4 are disposed on the second inclined surface S2 , the first and second pixels P1 and P2 are disposed ) may be supplied with first image data, and second image data may be supplied to the third and fourth pixels P3 and P4.

Accordingly, the pixels disposed on the first inclined surface S1 of the prism pattern 106a display the first image View1 based on the first image data, and the pixels disposed on the second inclined surface S1 of the prism pattern 106a display the second image. A second image (View2) by data is displayed.

When the first and second images View1 and View2 are data converted to implement a three-dimensional (3D) stereoscopic image, as shown in FIG. 11 , a three-dimensional stereoscopic image is displayed.

That is, one image is realized by the combination of the first and second images View1 and View2, but a three-dimensional image is displayed by the combination of the two images View1 and View2. This allows the first image View1 and the second image View2 to be alternately recognized by the left or right eyes among both eyes of the observer to implement a 3D stereoscopic image, similar to the function of the barrier panel in the prior art.

However, when the first and second images View1 and View2 are to implement different images, different first and second images are displayed as shown in FIG. 10 . Accordingly, different images can be viewed according to directions facing the first inclined surface S1 and the second inclined surface S2 of the prism pattern.

9 is a case in which multi-view image data DATA′ is supplied to the display panel according to the embodiment of FIG. 5 . The multi-view image data DATA' included in the stereoscopic image data DATA' may include three different first to third image data.

The uneven pattern 116a of FIG. 5 has first to third surfaces T1 , T2 , and T3 , and according to the method described with reference to FIGS. 8A and 8B , the pixels disposed on the first surface T1 The first image View1 is displayed by the display, the second image View2 is displayed by the pixels arranged on the second surface T2, and the third image is displayed by the pixels arranged on the third surface T3. (View3) is displayed.

As shown in FIG. 10 , the first to third surfaces that are different from each other according to directions facing each other with respect to the first surface T1 , the second surface T2 , and the third surface T3 of the concave-convex pattern 116a . You can see the images (View1, View2, View3).

The stereoscopic image display device according to the present invention has the effect of realizing a stereoscopic image or a multi-image without attaching a barrier panel by arranging a micro pattern layer in a display panel and arranging organic light emitting diodes on an inclined surface of the prism pattern.

In the stereoscopic image display device according to the present invention, micro-pattern layers having slopes in different directions are disposed on an array layer in which thin film transistors are disposed, and red (R) and green (G) layers are disposed on the slopes of each prism pattern. and by arranging unit pixels composed of blue (B) sub-pixels, there is an effect of realizing a stereoscopic image or a multi-image without lowering luminance.

The above description and the accompanying drawings are merely illustrative of the technical idea of the present invention, and those of ordinary skill in the art to which the present invention pertains can combine configurations within a range that does not depart from the essential characteristics of the present invention. , various modifications and variations such as separation, substitution and alteration will be possible. Therefore, the embodiments disclosed in the present invention are not intended to limit the technical spirit of the present invention, but to explain, and the scope of the technical spirit of the present invention is not limited by these embodiments. The protection scope of the present invention should be construed by the following claims, and all technical ideas within the equivalent range should be construed as being included in the scope of the present invention.

101: first substrate
102: buffer layer
103: first insulating layer
104: second insulating layer
106: micro-patterned layer
106a: prism pattern
201: Shield
202: second substrate
111: first electrode
112: organic light emitting layer
113: second electrode
114: organic light emitting diode

Claims (9)

a substrate in which a plurality of pixels composed of red, green, and blue sub-pixels are partitioned;
an array layer disposed on the substrate;
a micro-patterned layer disposed on the array layer; and
The pixels are disposed in different directions on the micro-pattern layer and include an organic light emitting diode disposed in each sub-pixel,
The micro-pattern layer includes a first inclined surface and a second inclined surface having different inclination directions,
An organic light emitting diode of two or more pixels is disposed on the micro-pattern layer,
The organic light emitting diode of any one of the two or more pixels is located on the first inclined surface,
The organic light emitting diode of the other one of the two or more pixels is positioned on the second inclined surface. According to claim 1,
A stereoscopic image display device in which a plurality of prism patterns having the first inclined surface and the second inclined surface having different inclination angles are disposed on the micro-pattern layer. 3. The method of claim 2,
The organic light emitting diode is disposed on the first inclined surface and the second inclined surface. According to claim 1,
The micro-pattern layer has a first surface, a second surface, and a third surface having different inclination directions from each other,
The first surface is the first inclined surface, and the second surface is the second inclined surface, and a plurality of uneven patterns are disposed. 5. The method of claim 4,
wherein the organic light emitting diodes are disposed on the first to third surfaces, respectively. 6. The method of claim 5,
The first surface and the second surface are symmetrical to each other with the third surface interposed therebetween. According to claim 1,
The material of the micro-pattern layer is any one selected from an acryl-based organic compound, benzo-cyclo-butene (BCB), or perfluorocyclobutane (PFCB). According to claim 1,
The material of the micro-pattern layer is silicon oxide (SiO ₂ ) or silicon nitride (SiN _x ). According to claim 1,
The organic light emitting diode of each of the sub-pixels included in one pixel is positioned at different heights from the array layer.

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