KR102037727B1 - Touch display device and method of manufacturing the same - Google Patents

Abstract

The touch display device includes a display panel including a plurality of pixel regions separated by non-pixel regions, and a touch screen panel disposed on the display panel. The touch screen panel extends in a zigzag shape in a first direction, extends in a second direction crossing the first direction in a zigzag shape with a first touch electrode disposed between the pixel regions on a plan view, and in a plan view. A second touch electrode is disposed between the pixel regions.

Description

TOUCH DISPLAY DEVICE AND METHOD OF MANUFACTURING THE SAME}

The present invention relates to a touch display device and a method of manufacturing the touch display device, and more particularly, to a touch display device and a method of manufacturing the touch display device that can reduce the defect.

The organic light emitting display device includes an organic light emitting diode including a hole injection electrode, an electron injection electrode, and an organic light emitting layer formed therebetween, and holes and electrons injected from the hole injection electrode are injected from the organic light emitting layer. An exciton generated by combining falls from an excited state to a ground state and generates light.

The organic light emitting display device, which is a self-luminous display device, can be driven at low voltage because it does not need a separate light source, and can be configured in a light and thin shape, and has high quality characteristics such as wide viewing angle, high contrast and fast response speed. It is attracting attention as a next generation display device.

In general, an organic light emitting display device includes a plurality of pixels, each of which emits light of a different color, and the plurality of pixels emits light to display an image.

Herein, a pixel means a minimum unit for displaying an image, and a power line such as a gate line, a data line, a driving power line for driving each pixel, and an area or shape of each pixel are defined between neighboring pixels. An insulating layer such as a pixel defining layer may be positioned.

Recently, researches for applying a touch screen panel function to such a display device are in progress. The touch screen panel is an input device for inputting a command by a method of touching a screen of the display device with an object such as a finger or a pen. Since the touch screen panel can replace a separate input device mounted and operated in a display device such as a keyboard and a mouse, its use range is gradually expanded to improve user convenience.

As a method of implementing a touch screen panel, a resistive film method, a light sensing method, and a capacitive method are known. The dual capacitive touch screen panel converts a contact position into an electrical signal by detecting a change in capacitance that a conductive sensing pattern forms around another sensing pattern or a ground electrode when an object such as a human hand or pen touches it. do.

However, when the touch electrodes of the touch screen panel overlap with the pixels of the display device, the area where the touch electrodes and the pixels overlap each other may change the luminance ratio of each pixel. In addition, since a change in luminance ratio for each pixel is changed, unevenness may occur in the display device.

Accordingly, the technical problem of the present invention has been devised in this respect, and an object of the present invention is to provide a touch display device capable of reducing defects.

Another object of the present invention is to provide a method of manufacturing the touch display device.

A touch display device according to an exemplary embodiment of the present invention includes a display panel including a plurality of pixel areas separated by non-pixel areas, and a touch screen panel disposed on the display panel. The touch screen panel extends in a zigzag shape in a first direction, extends in a second direction crossing the first direction in a zigzag shape with a first touch electrode disposed between the pixel regions on a plan view, and in a plan view. A second touch electrode is disposed between the pixel regions.

In an embodiment, the plurality of pixel areas are spaced apart from a first pixel and the first pixel, and a center point is formed at a first vertex of an imaginary rectangle having a center point of the first pixel as a center point of the rectangle. The second pixel may be positioned to be spaced apart from the second pixel, and the third pixel may be positioned at a second vertex adjacent to the first vertex of the virtual quadrangle.

In an embodiment, the first touch electrode and the second touch electrode are spaced apart from the first pixel by a first interval and are different from the second pixel or third pixel and the first interval. Can be spaced apart.

In example embodiments, the second touch electrode may include a first branch part and a second branch part connected to the first branch part and surrounding the first pixel.

In one embodiment of the present invention, the second pixel may be a plurality. The plurality of second pixels may be spaced apart from each other with the first pixel interposed therebetween.

In one embodiment of the present invention, the third pixel may be a plurality. The plurality of third pixels may be spaced apart from each other with the first pixel interposed therebetween.

In one embodiment of the present invention, the second pixel and the third pixel may be a plurality. The plurality of second pixels and the plurality of third pixels may be alternately arranged on a virtual straight line to surround the first pixel.

In example embodiments, the second pixel and the third pixel may have an area larger than that of the first pixel.

In example embodiments, the first pixel, the second pixel, and the third pixel may emit light of different colors.

In example embodiments, the first pixel may emit green light. The second pixel may emit blue light. The third pixel may emit red light.

According to another aspect of the present invention, there is provided a method of manufacturing a touch display device, the method including: forming a display panel including a plurality of pixel regions separated by non-pixel regions; Forming a first touch electrode disposed between the pixel regions in a plan view and extending in a second direction crossing the first direction in a zigzag shape and disposed between the pixel regions in a plan view Forming a second touch electrode.

In an exemplary embodiment, the forming of the display panel may include forming a first pixel, spaced apart from the first pixel, and forming a virtual rectangle having a center point of the first pixel as a center point of the rectangle. Forming a second pixel having a center point at a first vertex, and forming a third pixel spaced apart from the second pixel and having a center point at a second vertex adjacent to the first vertex of the virtual rectangle It may include the step.

In an embodiment, the first touch electrode and the second touch electrode are spaced apart from the first pixel by a first interval and are different from the second pixel or third pixel and the first interval. Can be spaced apart.

In example embodiments, the second touch electrode may include a first branch part and a second branch part connected to the first branch part and surrounding the first pixel.

In one embodiment of the present invention, the second pixel may be a plurality. The plurality of second pixels may be spaced apart from each other with the first pixel interposed therebetween.

In one embodiment of the present invention, the third pixel may be a plurality. The plurality of third pixels may be spaced apart from each other with the first pixel interposed therebetween.

In one embodiment of the present invention, the second pixel and the third pixel may be a plurality. The plurality of second pixels and the plurality of third pixels may be alternately arranged on a virtual straight line to surround the first pixel.

In example embodiments, the second pixel and the third pixel may have an area larger than that of the first pixel.

In example embodiments, the first pixel, the second pixel, and the third pixel may emit light of different colors.

In example embodiments, the first pixel may emit green light. The second pixel may emit blue light. The third pixel may emit red light.

According to the exemplary embodiments of the present invention, the pixel array structure has a wide interval between pixels emitting the same light to improve deposition reliability, and a narrow interval between red, green, and blue pixels constituting the subpixel is arranged to have an aperture ratio. Can be improved.

In addition, the touch electrodes of the touch screen panel may be disposed at different intervals in correspondence to pixels having different aperture ratios, and thus the overlapping area of the pixel and the touch electrode may be adjusted for each pixel, thereby increasing the viewing angle of each pixel. The luminance reduction rate can be adjusted accordingly. Therefore, defects such as unevenness of the display panel can be reduced.

1 is a plan view illustrating a touch display device according to an exemplary embodiment of the present invention.
FIG. 2 is a plan view illustrating the first touch electrode of FIG. 1.
3 is a plan view illustrating a second touch electrode of FIG. 1.
4 is a cross-sectional view taken along the line II ′ of FIG. 1.
5 to 6 are cross-sectional views illustrating a method of manufacturing the touch screen panel of FIG. 4.
7 is a plan view illustrating a display panel according to an exemplary embodiment of the present invention.
8 is a plan view illustrating a touch display device according to an exemplary embodiment of the present invention.
FIG. 9 is a plan view illustrating the first touch electrode of FIG. 8.
FIG. 10 is a plan view illustrating the second touch electrode of FIG. 8.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the drawings.

1 is a plan view illustrating a touch display device according to an exemplary embodiment of the present invention. FIG. 2 is a plan view illustrating the first touch electrode of FIG. 1. 3 is a plan view illustrating a second touch electrode of FIG. 1.

1 to 3, a touch display device according to an exemplary embodiment of the present invention includes a plurality of pixel regions and a first touch electrode 320 and a second touch electrode 340 disposed between the plurality of pixel regions. ).

The plurality of pixel areas includes a plurality of first pixels 10, a plurality of second pixels 20, and a plurality of third pixels 30.

The first pixel 10 may have a smaller area than the neighboring second pixel 20 and the third pixel 30, and may have a quadrangular shape among polygons. In the present specification, the polygon to the quadrangle includes a form in which a vertex is rounded. That is, the first pixel 10 may have the form of a quadrangular rounded corner.

The first pixel 10 may be plural, and the plurality of first pixels 10 may have the same rectangular shape. The plurality of first pixels 10 are spaced apart from each other and arranged on a virtual first straight line VL1. The first pixel 10 may emit green light and may include an organic emission layer emitting green light.

The second pixel 20 is positioned at the first vertex P1 of the virtual rectangle VS having the center point of the first pixel 10 as the center point of the square, and the second vertex of the virtual rectangle VS. The third pixel 30 is positioned at P2. The rectangle VS may be square.

The second pixel 20 is spaced apart from the first pixel 10, and a center point is positioned at the first vertex P1 of the virtual square VS. The second pixel 20 may have a larger area than the neighboring first pixel 10 and may have a quadrangle shape among polygons. The second pixels 20 may be plural, and the plurality of second pixels 20 may have the same quadrangular shape. The second pixels 20 are spaced apart from each other with respect to the first pixel 10. The second pixel 20 may emit blue light, and may include an organic emission layer that emits blue light.

The third pixel 30 is spaced apart from the first pixel 10 and the second pixel 20 and is adjacent to the first vertex P1 of the virtual square VS. The center point is located. The third pixel 30 may have a larger area than the neighboring first pixel 10.

In addition, the third pixel 30 may have the same area as the second pixel 20, and may have a quadrangular shape among polygons. The third pixel 30 may be plural, and the plurality of third pixels 30 may have the same rectangular shape. The plurality of third pixels 30 are spaced apart from each other with respect to the first pixel 10. The third pixel 30 may emit red light and may include an organic emission layer emitting red light. However, the present invention is not limited thereto, and the third pixel 30 may have an area different from that of the second pixel 20.

Each of the plurality of third pixels 30 and the plurality of second pixels 20 are alternately arranged on a virtual second straight line VL2, whereby a center point is positioned at the first vertex P1. Each of the plurality of third pixels 30 having a center point positioned at the plurality of second pixels 20 and the second vertex P2 surrounds the first pixel 10.

Each of the plurality of second pixels 20 and the plurality of third pixels 30 is arranged to surround the first pixel 10 so that the first pixel 10, the second pixel 20, and The aperture ratio of each of the third pixels 30 may be improved. This reduces the manufacturing time and manufacturing cost of the overall organic light emitting diode display and serves as a factor of improving the quality of the image displayed by the organic light emitting diode display.

That is, in the pixel array structure of the touch display device according to the exemplary embodiment of the present invention, the intervals between the pixels emitting the same light are widened to improve deposition reliability, and the intervals between the red, green, and blue pixels forming the sub-pixels. May be arranged to be narrow so that the aperture ratio is improved.

The touch screen panel is disposed on the display panel. The touch screen panel may include a first touch electrode 320 and a second touch electrode 340.

The first touch electrode 320 extends in the first direction D1. The first touch electrode 320 may have a zigzag shape. The first touch electrode 320 is disposed between the pixels of the display panel. The first touch electrode 320 is spaced apart from the first pixel 10 by a first interval d1. In addition, the first touch electrode 320 is spaced apart from the third pixel 30 by a second interval d2. That is, the distance between the first pixel 10 adjacent to the first touch electrode 320 has a different value from that between the third pixel 30 adjacent to the first touch electrode 320. In addition, an interval between the first pixel 10 and the first pixel 10 adjacent to the first touch electrode 320 has a value different from an interval between the second pixel 20 adjacent to the first touch electrode 320.

Each pixel of the display panel according to an exemplary embodiment has a different aperture ratio. However, when the overlapping touch electrodes are arranged at equal intervals, when the viewing angle of the panel increases, the area ratio of each pixel and the touch electrode overlaps, so that the luminance ratio of each pixel according to the viewing angle is different. Changes can vary. This may be caused by defects such as staining of the display panel.

However, the first touch electrodes 320 of the touch screen panel according to the embodiment of the present invention are disposed at different intervals corresponding to the pixels having different aperture ratios, so that the pixels and the touch electrodes overlap each pixel. Since it can be adjusted, the luminance reduction rate according to the increase in the viewing angle of each pixel can be adjusted. Therefore, defects such as unevenness of the display panel can be reduced.

The second touch electrode 340 extends in a second direction D2 crossing the first direction D1. The second touch electrode 340 may have a zigzag shape. The second touch electrode 340 is disposed between the pixels of the display panel. The second touch electrode 340 is spaced apart from the first pixel 10 by a third interval d3. In addition, the first touch electrode 340 is spaced apart from the third pixel 30 by a fourth interval d4. That is, an interval between the second touch electrode 340 and the first pixel 10 adjacent to the second touch electrode 340 has a value different from an interval between the third pixel 30 adjacent to the second touch electrode 340. In addition, an interval between the second touch electrode 340 and the first pixel 10 adjacent to the second touch electrode 340 has a value different from an interval between the second pixel 20 adjacent to the second touch electrode 340.

Each pixel of the display panel according to an exemplary embodiment has a different aperture ratio. However, when the overlapping touch electrodes are arranged at equal intervals, when the viewing angle of the panel increases, the area ratio of each pixel and the touch electrode overlaps, so that the luminance ratio of each pixel according to the viewing angle is different. Changes can vary. This may be caused by defects such as staining of the display panel.

However, the second touch electrodes 340 of the touch screen panel according to the exemplary embodiment of the present invention are disposed at different intervals corresponding to respective pixels having different aperture ratios, so that the pixels and the touch electrodes overlap each pixel. Since it can be adjusted, the luminance reduction rate according to the increase in the viewing angle of each pixel can be adjusted. Therefore, defects such as unevenness of the display panel can be reduced.

4 is a cross-sectional view taken along the line II ′ of FIG. 1.

Referring to FIG. 4, the touch screen panel 300 according to an exemplary embodiment of the present invention may include a base substrate 310, a first touch electrode 320, a first insulating layer 330, and a second touch electrode 340. And a second insulating layer 350.

The base substrate 310 may be a transparent substrate. The base substrate 310 is a flexible polyethylene terephthalate (PE), polycarbonate (PC), polyethylene (PE), polyvinyl chloride (PVC), polypropylene (PP), polystyrene (PS) or polymethyl It may be made of a flexible material such as made of a material selected from the group consisting of methacrylate methyl ester (PMMA).

The base substrate 310 may be an upper substrate constituting the display panel of the touch display device. Alternatively, the base substrate 310 may be a separate substrate attached to the display panel. In the present exemplary embodiment, the base substrate 310 is illustrated as a separate substrate attached to the display panel, but the present invention is not limited thereto.

The first touch electrode 320 is disposed on the base substrate 320. The first touch electrode 320 is copper (Cu), aluminum (Ti), molybdenum (Mo), titanium (Ti), silver (Ag), gold (Au), nickel (Ni), chromium (Cr), iron Low resistance metal materials such as (Fe), indium (In), and gallium (GA) may be included. However, the present invention is not limited thereto, and the first touch electrode 320 may include various conductive materials.

The first insulating layer 330 is disposed on the first touch electrode 320. The first insulating layer 330 may include an inorganic insulating material. For example, the first insulating layer 330 may include silicon oxide (SiOx) or silicon nitride (SiNx). For example, the first insulating layer 330 may have a multilayer structure including different materials.

The second touch electrode 340 is disposed on the first insulating layer 330. The second touch electrode 340 may include copper (Cu), aluminum (Ti), molybdenum (Mo), titanium (Ti), silver (Ag), gold (Au), nickel (Ni), chromium (Cr), and iron. Low resistance metal materials such as (Fe), indium (In), and gallium (GA) may be included. However, the present invention is not limited thereto, and the second touch electrode 340 may include various conductive materials.

The second insulating layer 350 is disposed on the second touch electrode 340. The second insulating layer 350 may include an inorganic insulating material. For example, the second insulating layer 350 may include silicon oxide (SiOx) or silicon nitride (SiNx). For example, the second insulating layer 350 may have a multilayer structure including different materials.

5 to 6 are cross-sectional views illustrating a method of manufacturing the touch screen panel of FIG. 4.

Referring to FIG. 5, a first touch electrode 320 and a first insulating layer 330 are formed on the base substrate 310.

The base substrate 310 may be an upper substrate constituting the display panel of the touch display device. Alternatively, the base substrate 310 may be a separate substrate attached to the display panel. In the present exemplary embodiment, the base substrate 310 is illustrated as a separate substrate attached to the display panel, but the present invention is not limited thereto.

The first touch electrode 320 is formed on the base substrate 320. The first touch electrode 320 is copper (Cu), aluminum (Ti), molybdenum (Mo), titanium (Ti), silver (Ag), gold (Au), nickel (Ni), chromium (Cr), iron Low resistance metal materials such as (Fe), indium (In), and gallium (GA) may be included. However, the present invention is not limited thereto, and the first touch electrode 320 may include various conductive materials.

The first insulating layer 330 is formed on the first touch electrode 320. The first insulating layer 330 may include an inorganic insulating material. For example, the first insulating layer 330 may include silicon oxide (SiOx) or silicon nitride (SiNx). For example, the first insulating layer 330 may have a multilayer structure including different materials.

Referring to FIG. 6, a second touch electrode is formed on the base substrate 310 on which the first insulating layer 330 is formed.

The second touch electrode 340 is formed on the first insulating layer 330. The second touch electrode 340 may include copper (Cu), aluminum (Ti), molybdenum (Mo), titanium (Ti), silver (Ag), gold (Au), nickel (Ni), chromium (Cr), and iron. Low resistance metal materials such as (Fe), indium (In), and gallium (GA) may be included. However, the present invention is not limited thereto, and the second touch electrode 340 may include various conductive materials.

Referring to FIG. 4, a second insulating layer 350 is formed on the base substrate 310 on which the second touch electrode 340 is formed.

The second insulating layer 350 is disposed on the second touch electrode 340. The second insulating layer 350 may include an inorganic insulating material. For example, the second insulating layer 350 may include silicon oxide (SiOx) or silicon nitride (SiNx). For example, the second insulating layer 350 may have a multilayer structure including different materials.

The touch screen panel 300 is attached to the display panel. However, the touch screen panel 300 may be directly formed on an oral or display panel, in which the base substrate 310 is an upper substrate constituting the display panel of the touch display device.

7 is a plan view illustrating a display panel according to an exemplary embodiment of the present invention.

Referring to FIG. 7, a touch display device according to an embodiment of the present invention includes a display panel DP and a touch screen panel 300. In the present embodiment, the touch display device may be an organic light emitting touch display device.

The display panel DP includes a lower substrate 100, a buffer layer 102, a gate insulating layer 104, an interlayer insulating layer 106, a planar insulating layer 108, a pixel definition layer 112, a thin film transistor 130, The first electrode 146, the second electrode 148, the organic light emitting diode 200, and the encapsulation substrate 150 are included.

The lower substrate 100 may include a transparent insulating substrate. For example, the first substrate 100 may be formed of a glass substrate, a quartz substrate, a transparent resin substrate, or the like. Here, the transparent resin substrate may include a polyimide resin, an acrylic resin, a polyacrylate resin, a polycarbonate resin, a polyether resin, a polyethylene terephthalate resin, a sulfonic acid resin, and the like.

The buffer layer 102 is disposed on the lower substrate 100 and includes an insulating material. Examples of the insulating material that may be used for the buffer layer 102 include inorganic insulation such as silicon oxide (SiOx), silicon nitride (SiNx), silicon oxynitride (SiOxNy), silicon oxycarbide (SiOxCy), and silicon carbonitride (SiCxNy). Contains substances. The inorganic insulating materials may be used alone, as a compound, a mixture, or a laminated structure combined with each other. When the buffer layer 102 includes a stacked structure, the buffer layer 102 may have a multilayer structure including a silicon oxide film, a silicon nitride film, a silicon oxynitride film, a silicon oxycarbide film, and / or a silicon carbonitride film.

The buffer layer 102 prevents diffusion of metal atoms or impurities from the lower substrate 100 and subsequently controls heat transfer rate during the crystallization process to form the active patterns 132, 134, and 136. To improve the electrical properties of. In addition, the buffer layer 102 flattens the surface of the lower substrate 100.

The active pattern 135 is disposed on the buffer layer 102. In the present embodiment, the active pattern 135 includes polysilicon. The active pattern 135 includes a drain contact portion 132 contacting the drain electrode 142 of the thin film transistor 130, a source contact portion 136 and a drain contacting the source electrode 144 of the thin film transistor 130. And a channel portion 134 disposed between the contact portion 132 and the source contact portion 136.

The gate insulating layer 104 is disposed on the buffer layer 102 on which the active pattern 135 is formed to electrically insulate the active pattern 135 from the gate electrode 138 and the gate line (not shown). The gate insulating layer 104 may be formed using silicon oxide, metal oxide, or the like. For example, the metal oxide constituting the gate insulating layer 115 may include hafnium oxide (HfOx), aluminum oxide (AlOx), zirconium oxide (ZrOx), titanium oxide (TiOx), tantalum oxide (TaOx), and the like. . These may be used alone or in combination with each other or stacked. The gate insulating layer 104 may include contact holes exposing the source contact portion 136 and the drain contact portion 132.

The gate electrode 138 is disposed on the gate insulating film 104. The gate electrode 138 is disposed on the channel portion 134 of the active pattern 135. When a voltage difference is formed between the gate electrode 138 and the source electrode 144, the thin film transistor 130 is turned on so that a current flows through the channel portion 134 to the drain electrode 142.

The gate electrode 138 may be formed using a metal, an alloy, a metal nitride, a conductive metal oxide, a transparent conductive material, or the like. For example, the gate electrode 138 is made of aluminum (Al), an alloy containing aluminum, aluminum nitride (AlNx), silver (Ag), an alloy containing silver, tungsten (W), tungsten nitride (WNx), copper (Cu), alloys containing copper, nickel (Ni), chromium (Cr), chromium nitride (CrNx), molybdenum (Mo), alloys containing molybdenum, titanium (Ti), titanium nitride (TiNx ), Platinum (Pt), tantalum (Ta), tantalum nitride (TaNx), neodymium (Nd), scandium (Sc), strontium ruthenium oxide (SRO), zinc oxide (ZnOx), indium tin oxide (ITO), tin oxide (SnOx), indium oxide (InOx), gallium oxide (GaOx), indium zinc oxide (IZO), and the like. These may be used alone or in combination with each other. In addition, the gate electrode 138 may be formed in a single layer structure or a multilayer structure including a metal film, an alloy film, a metal nitride film, a conductive metal oxide film, and / or a transparent conductive material film.

The interlayer insulating film 106 is formed on the gate insulating film 104 on which the gate electrode 138 and the gate line (not shown) are formed. The interlayer insulating film 106 insulates the gate electrode 138 and the gate line (not shown) from the source electrode 144 and the drain electrode 142.

The interlayer insulating layer 106 may include a silicon compound. For example, the interlayer insulating layer 125 may be formed using silicon oxide, silicon nitride, silicon oxynitride, silicon carbonitride, silicon oxycarbide, or the like. These may be used alone or in combination with each other. The interlayer insulating layer 106 includes contact holes exposing the source portion 136 and the drain portion 132 of the active pattern 135.

The source electrode 144 and the drain electrode 142 are formed on the interlayer insulating layer 106. The source electrode 144 and the drain electrode 142 penetrate through the contact holes and contact the source portion 136 and the drain portion 132 of the active pattern 132, respectively.

The source and drain electrodes 144 and 142 may be formed using metals, alloys, metal nitrides, conductive metal oxides, transparent conductive materials, and the like. For example, the source and drain electrodes 144 and 142 are aluminum, alloy containing aluminum, aluminum nitride, silver, alloy containing silver, tungsten, tungsten nitride, copper, alloy containing copper, nickel and chromium, respectively. , Chromium nitride, molybdenum, alloy containing molybdenum, titanium, titanium nitride, platinum, tantalum, tantalum nitride, neodymium, scandium, strontium ruthenium oxide, zinc oxide, indium tin oxide, tin oxide, indium oxide, gallium Oxides, indium zinc oxide, and the like. These may be used alone or in combination with each other.

The planar insulating layer 108 is formed on the interlayer insulating layer 106 on which the source and drain electrodes 144 and 142 and the data line (not shown) are formed to insulate the source electrode 144 from the first electrode 146.

The flat insulating layer 108 may include an organic insulating material or an inorganic insulating material. For example, the flat insulating film 108 may be a photoresist, an acrylic resin, a polyimide resin, a polyamide resin, a siloxane resin, a resin containing a photosensitive acrylic carboxyl group, a novolak resin, an alkali-soluble resin, a silicon oxide, a silicon. Nitride, silicon oxynitride, silicon oxycarbide, silicon carbonitride and the like. These may be used alone or in combination with each other.

The flat insulating layer 108 includes a contact hole exposing the drain electrode 142.

The first electrode 146 is disposed on the flat insulating film 108 corresponding to the pixel region and is electrically connected to the drain electrode 142 through the contact hole of the flat insulating film 108.

When the organic light emitting diode display has a top emission type, the first electrode 146 may be formed using a reflective metal, an reflective alloy, or the like. For example, the first electrode 146 may include aluminum, silver, platinum, gold (Au), chromium, tungsten, molybdenum, titanium, palladium (Pd), iridium (Ir), alloys of these metals, and the like. Can be. These may be used alone or in combination with each other. In another embodiment, the first electrode 146 may be formed using a transparent conductive material such as indium tin oxide, tin oxide, indium zinc oxide, zinc oxide, indium gallium oxide, gallium oxide, or the like. These may be used alone or in combination with each other.

The pixel definition layer 112 is disposed on the flat insulating layer 108 on which the first electrode 146 is formed to expose a portion of the first electrode 146. The pixel defining layer 112 may be formed using an organic material or an inorganic material. For example, the pixel defining layer 112 may be formed using a photoresist, polyacrylic resin, polyimide resin, acrylic resin, silicone compound, or the like. The display area and the non-display area of the organic light emitting diode display may be defined by a portion where the first electrode 146 is exposed by the pixel defining layer 112. For example, a portion where the exposed portion of the first electrode 146 is positioned by the pixel defining layer 112 may correspond to the display area.

The organic light emitting diode 200 is disposed on the first electrode 146 exposed by the pixel defining layer 112, and the second electrode covers the organic light emitting diode 200 and the pixel defining layer 112.

When the organic light emitting diode display has a top emission type, the second electrode 148 may be formed using a transparent conductive material such as indium tin oxide, tin oxide, indium zinc oxide, zinc oxide, indium gallium oxide, gallium oxide, or the like. Can be. These may be used alone or in combination with each other.

8 is a plan view illustrating a touch display device according to an exemplary embodiment of the present invention. FIG. 9 is a plan view illustrating the first touch electrode of FIG. 8. FIG. 10 is a plan view illustrating the second touch electrode of FIG. 8.

8 through 10, a touch display device according to an exemplary embodiment of the present invention may include a plurality of pixel regions and a first touch electrode 1320 and a second touch electrode 1340 disposed between the plurality of pixel regions. ).

The plurality of pixel areas includes a plurality of first pixels 10, a plurality of second pixels 20, and a plurality of third pixels 30.

The first pixel 10 may have a smaller area than the neighboring second pixel 20 and the third pixel 30, and may have a quadrangular shape among polygons. In the present specification, the polygon to the quadrangle includes a form in which a vertex is rounded. That is, the first pixel 10 may have the form of a quadrangular rounded corner.

The first pixel 10 may be plural, and the plurality of first pixels 10 may have the same rectangular shape. The plurality of first pixels 10 are spaced apart from each other and arranged on a virtual first straight line VL1. The first pixel 10 may emit green light and may include an organic emission layer emitting green light.

The second pixel 20 is positioned at the first vertex P1 of the virtual rectangle VS having the center point of the first pixel 10 as the center point of the square, and the second vertex of the virtual rectangle VS. The third pixel 30 is positioned at P2. The rectangle VS may be square.

The second pixel 20 is spaced apart from the first pixel 10, and a center point is positioned at the first vertex P1 of the virtual square VS. The second pixel 20 may have a larger area than the neighboring first pixel 10 and may have a quadrangle shape among polygons. The second pixels 20 may be plural, and the plurality of second pixels 20 may have the same quadrangular shape. The second pixels 20 are spaced apart from each other with respect to the first pixel 10. The second pixel 20 may emit blue light, and may include an organic emission layer that emits blue light.

The third pixel 30 is spaced apart from the first pixel 10 and the second pixel 20 and is adjacent to the first vertex P1 of the virtual square VS. The center point is located. The third pixel 30 may have a larger area than the neighboring first pixel 10.

In addition, the third pixel 30 may have the same area as the second pixel 20 and may have a quadrangle shape among polygons. The third pixel 30 may be plural, and the plurality of third pixels 30 may have the same rectangular shape. The plurality of third pixels 30 are spaced apart from each other with respect to the first pixel 10. The third pixel 30 may emit red light and may include an organic emission layer emitting red light. However, the present invention is not limited thereto, and the third pixel 30 may have an area different from that of the second pixel 20.

Each of the plurality of third pixels 30 and the plurality of second pixels 20 are alternately arranged on a virtual second straight line VL2, whereby a center point is positioned at the first vertex P1. Each of the plurality of third pixels 30 having a center point positioned at the plurality of second pixels 20 and the second vertex P2 surrounds the first pixel 10.

Each of the plurality of second pixels 20 and the plurality of third pixels 30 is arranged to surround the first pixel 10 so that the first pixel 10, the second pixel 20, and The aperture ratio of each of the third pixels 30 may be improved. This reduces the manufacturing time and manufacturing cost of the overall organic light emitting diode display, and serves as a factor of improving the quality of the image displayed by the organic light emitting diode display.

That is, in the pixel array structure of the touch display device according to the exemplary embodiment of the present invention, the intervals between the pixels emitting the same light are widened to improve deposition reliability, and the intervals between the red, green, and blue pixels forming the sub-pixels. May be arranged to be narrow so that the aperture ratio is improved.

The touch screen panel is disposed on the display panel. The touch screen panel may include a first touch electrode 320 and a second touch electrode 340.

The first touch electrode 320 extends in the first direction D1. The first touch electrode 320 may have a zigzag shape. The first touch electrode 320 is disposed between the pixels of the display panel. The first touch electrode 320 is spaced apart from the first pixel 10 by a first interval d1. In addition, the first touch electrode 320 is spaced apart from the third pixel 30 by a second interval d2. That is, the distance between the first pixel 10 adjacent to the first touch electrode 320 has a different value from that between the third pixel 30 adjacent to the first touch electrode 320. In addition, an interval between the first pixel 10 and the first pixel 10 adjacent to the first touch electrode 320 has a value different from an interval between the second pixel 20 adjacent to the first touch electrode 320.

The touch screen panel is disposed on the display panel. The touch screen panel may include a first touch electrode 1320 and a second touch electrode 1340.

The first touch electrode 1320 extends in the first direction D1. The first touch electrode 1320 may have a zigzag shape. The first touch electrode 1320 is disposed between the pixels of the display panel. The first touch electrode 1320 is spaced apart from the first pixel 10 by a first interval d1. In addition, the first touch electrode 1320 is spaced apart from the third pixel 30 by a second interval d2. That is, the distance between the first pixel 10 adjacent to the first touch electrode 1320 has a value different from the distance between the third pixel 30 adjacent to the first touch electrode 1320. In addition, the distance between the first touch electrode 1320 and the first pixel 10 adjacent to the first touch electrode 1320 has a value different from that between the first touch electrode 1320 and the second pixel 20 adjacent to the first touch electrode 1320.

Each pixel of the display panel according to an exemplary embodiment has a different aperture ratio. However, when the overlapping touch electrodes are arranged at equal intervals, when the viewing angle of the panel increases, the area ratio of each pixel and the touch electrode overlaps, so that the luminance ratio of each pixel according to the viewing angle is different. Changes can vary. This may be caused by defects such as staining of the display panel.

However, the first touch electrodes 1320 of the touch screen panel according to the exemplary embodiment of the present invention are disposed at different intervals corresponding to the pixels having different aperture ratios, so that the pixels and the touch electrodes overlap each pixel. Since it can be adjusted, the luminance reduction rate according to the increase in the viewing angle of each pixel can be adjusted. Therefore, defects such as unevenness of the display panel can be reduced.

The second touch electrode 1340 extends in a second direction D2 crossing the first direction D1. The second touch electrode 1340 may have a zigzag shape. The second touch electrode 1340 is disposed between the pixels of the display panel. The second touch electrode 1340 includes a first branch portion 1341 and a second branch portion 1343 connected to the first branch portion 1341 and surrounding the first pixel 10. The second touch electrode 1340 is spaced apart from the first pixel 10 by a third interval d3. In addition, the first touch electrode 1340 is spaced apart from the third pixel 30 by a fourth interval d4. That is, an interval between the second touch electrode 1340 and the first pixel 10 adjacent to the second touch electrode 1340 has a different value from an interval between the third pixel 30 adjacent to the second touch electrode 1340. In addition, an interval between the second touch electrode 1340 and the first pixel 10 adjacent to the second touch electrode 1340 has a value different from an interval between the second pixel 20 adjacent to the second touch electrode 1340.

Each pixel of the display panel according to an exemplary embodiment has a different aperture ratio. However, when the overlapping touch electrodes are arranged at equal intervals, when the viewing angle of the panel increases, the area ratio of each pixel and the touch electrode overlaps, so that the luminance ratio of each pixel according to the viewing angle is different. Changes can vary. This may be caused by defects such as staining of the display panel.

However, the second touch electrodes 1340 of the touch screen panel according to an embodiment of the present invention are disposed at different intervals corresponding to the pixels having different aperture ratios, so that the pixels and the touch electrodes overlap each pixel. Since it can be adjusted, the luminance reduction rate according to the increase in the viewing angle of each pixel can be adjusted. Therefore, defects such as unevenness of the display panel can be reduced.

According to the exemplary embodiments of the present invention, the pixel array structure has a wide interval between pixels emitting the same light to improve deposition reliability, and a narrow interval between red, green, and blue pixels constituting the subpixel is arranged to have an aperture ratio. Can be improved.

In addition, the touch electrodes of the touch screen panel may be disposed at different intervals in correspondence to pixels having different aperture ratios, and thus the overlapping area of the pixel and the touch electrode may be adjusted for each pixel, thereby increasing the viewing angle of each pixel. The luminance reduction rate can be adjusted accordingly. Therefore, defects such as unevenness of the display panel can be reduced.

Although described above with reference to the embodiments, those skilled in the art can variously modify and change the present invention without departing from the spirit and scope of the invention described in the claims below. I can understand that.

310: base substrate 310: first touch electrode
330: first insulating layer 340: second touch electrode
350: second insulating layer

Claims (17)

A first pixel, a second pixel alternately disposed with the first pixel in a first direction, and a third pixel alternately disposed with each other in a second direction crossing the first pixel and the first direction; A display panel comprising; And
A first touch electrode disposed on the display panel, disposed between the first pixel and the second pixel in the second direction, and disposed between the first pixel and the third pixel in the first direction; A touch screen panel including a second touch electrode,
The first pixel has a smaller size than the second pixel and the third pixel,
A first distance between the first touch electrode and the first pixel is smaller than a second distance between the first touch electrode and the second pixel,
And a third distance between the second touch electrode and the first pixel is smaller than a fourth distance between the second touch electrode and the third pixel. delete delete The method of claim 1,
The center point of the first pixel overlaps with the center point of the virtual rectangle,
The center point of the second pixel is located at the first vertex of the virtual rectangle,
And a center point of the third pixel is located at a second vertex adjacent to the first vertex of the virtual quadrangle. The method of claim 1,
The longitudinal direction of the first touch electrode is formed in the second direction,
The length direction of the second touch electrode is formed in the first direction. The method of claim 1,
The longitudinal direction of the first touch electrode is formed along the second direction,
And each of the first touch electrode and the second touch electrode includes a connection part formed along a direction different from the first direction and the second direction. The method of claim 1,
The second pixel and the third pixel are alternately disposed along an imaginary line,
And the first pixel is surrounded by the second pixel and the third pixel. The method of claim 1,
And wherein the first pixel, the second pixel, and the third pixel emit light of different colors. The method of claim 1,
And wherein the first pixel is green, the second pixel is blue, and the third pixel emits light of red color. A display panel including a plurality of first pixels and a plurality of second pixels that are alternately disposed in a first direction; And
A touch screen panel disposed on the display panel, the touch screen panel including a plurality of first touch electrodes and a plurality of second touch electrodes respectively disposed between the first pixels and the second pixels;
The first touch electrodes are formed along the first direction,
Each of the first touch electrodes extends in a second direction different from the first direction, and includes a first connection part spaced apart from an adjacent first touch electrode.
The second touch electrodes intersect the first touch electrodes,
Each of the second touch electrodes includes a first connection part extending in the second direction,
And the first connection portion of each of the first touch electrodes partially overlaps the first connection portion of each of the second touch electrodes. delete The method of claim 10,
Each of the first pixels has a different size from each of the second pixels. The method of claim 10,
Each of the first touch electrodes and the second touch electrodes further includes a second connection part extending in a third direction crossing the second direction.
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