WO2017204540A1 - Touch display device - Google Patents

Abstract

A touch display device of the present invention comprises: a display panel; a touch panel arranged on the display panel to sense a touch; and a transparent adhesion portion which is arranged between the display panel and the touch panel and includes a plurality of transparent adhesion layers which have different refractive indexes. Another touch display device of the present invention comprises: a display panel for providing an image; a touch panel arranged on the display panel to sense a touch; a first reflection preventing portion arranged on the touch panel; a second reflection preventing portion arranged on the first reflection preventing portion; and a color portion arranged between the first reflection preventing portion and the second reflection preventing portion.

Description

Touch display devices

The embodiment relates to a touch display device.

The touch display device refers to a device including a display panel and a touch panel. Here, the display panel serves to provide a screen, such as a liquid crystal display (LCD), and the touch panel is a finger or a stylus pen (or touch pen) to directly input information on the display. It serves to sense the touch of the back.

Such a touch display device is applied to various electronic display products such as a mobile phone, a notebook or a navigation device, and the demand for outdoor visibility and image quality characteristics thereof continues to increase.

The embodiment provides a touch display device having excellent visibility.

In one embodiment, a touch display device includes a display panel; A touch panel disposed on the display panel to sense a touch; And a light transmitting adhesive part disposed between the display panel and the touch panel and including a plurality of light transmitting adhesive layers having different refractive indices.

For example, each of the plurality of light-transmissive adhesive layers may include a silicon-based or acrylic material.

For example, each of the plurality of light transmitting adhesive layers may include at least one of an optical transparent resin (OCR), an optical transparent adhesive (OCA), or a liquid optical transparent adhesive (LOCA).

For example, the display panel may include a liquid crystal display (LCD) panel, an organic light emitting diode (OLED) panel, a plasma display panel (PDP) panel, an electroluminescence (EL) panel, or a cathode ray tube (CRT) panel. have.

For example, the display panel may include a backlight unit; And a liquid crystal panel disposed between the backlight unit and the plurality of light-transmitting adhesive layers to receive images irradiated from the backlight unit to implement an image.

For example, the liquid crystal panel may include a thin film transistor array substrate disposed on the backlight unit; A color filter array substrate disposed on the thin film transistor array substrate; And a liquid crystal layer filled between the thin film transistor substrate and the color filter array substrate. The liquid crystal panel may further include a lower polarizer disposed between the backlight unit and the thin film transistor array substrate to polarize light incident from the backlight unit into the liquid crystal layer; And an upper polarizer disposed on the color filter array substrate to polarize light transmitted from the liquid crystal layer.

For example, the touch display device may further include a substrate disposed on the touch panel. The substrate may include at least one of tempered glass, a tempered coating film, an LCD glass, or a plastic substrate for a flexible panel.

For example, the touch panel may include first and second electrode patterns disposed between the plurality of light-transmissive adhesive layers and the substrate and electrically spaced apart from each other. The touch panel may further include a space in which the first and second electrode patterns are spaced apart from each other, and a high refractive oxide layer disposed under the first and second electrode patterns. The touch panel may include an insulating layer disposed between the first and second electrode patterns and the substrate; And a pattern cover layer disposed between the insulating layer and the substrate.

For example, the touch display device may further include a function plate disposed on the substrate.

For example, the functional plate may include an antiglare unit disposed on the substrate; An anti-reflection portion disposed on the anti-glare portion; Or it may include at least one of the anti-finger portion disposed on the anti-reflection portion.

A touch display device according to a second embodiment includes a display panel for providing an image; A touch panel disposed on the display panel to sense a touch; A first anti-reflection portion disposed on the touch panel; A second anti-reflection portion disposed on the first anti-reflection portion; And a color unit disposed between the first antireflection unit and the second antireflection unit.

For example, the color part may have a thickness of 10 μm to 300 μm. The color unit may include at least one of a transparent PI film, a PEN film, a PET film, a PC film, a COP film, a TAC film, or a PSS film. The color portion may be a hard coated film. The color unit may be formed to have a black color. The color unit may include a light isotropic film.

For example, the first anti-reflection portion has a pair of structures 1-1 to 1-N (where N is a positive integer of 2 or more), and each of the structures 1-1 to 1-N has a first structure. A first bottom layer and a first top layer may be included, and the refractive index of the first bottom layer may be greater than that of the first top layer.

For example, the second anti-reflection portion has a pair structure of 2-1 to 2-M (where M is a positive integer of 2 or more), and each of the 2-1 to 2-M pair structures is formed of a second structure. A second bottom layer and a second top layer may be included, and the refractive index of the second bottom layer may be greater than that of the second top layer.

For example, M and N may be the same or different.

For example, the second bottom layer may include at least one of ATO, ZrO ₂ , TiO _2, or ZnS, and the second top layer may include SiO ₂ .

For example, the first antireflection portion and the second antireflection portion may have the same or different thicknesses.

For example, the touch display device may further include a finger protector disposed on the second antireflective part.

For example, the touch display apparatus may further include a substrate disposed between the touch panel and the first anti-reflection portion.

A touch display device according to a third embodiment includes a display panel for providing an image; A touch panel disposed on the display panel to sense a touch; A substrate disposed on the touch panel; A first anti-reflection portion disposed between the touch panel and the substrate; A second anti-reflection portion disposed on the substrate; And a color part disposed between the substrate and the second anti-reflection part.

For example, the color unit may include a support layer; A color dye layer disposed between the support layer and the substrate; And an adhesive layer disposed between the color dye layer and the substrate, and may further include a hard coating layer disposed between the support layer and the second anti-reflection portion.

For example, the support layer may include at least one of a transparent PI film, a PEN film, a PET film, a PC film, a COP film, a TAC film, or a PSS film. The support layer may be plasma surface treated, the color dye layer may be formed to have a black color, and the visible light transmittance of the color dye layer may be 35% to 70%.

For example, the first antireflection portion and the second antireflection portion may have the same thickness or different thicknesses.

For example, the touch display apparatus may further include a finger protector disposed on the second antireflective unit.

For example, the material of the first anti-reflection portion and the material of the second anti-reflection portion may be the same. The material of the first anti-reflection portion and the material of the second anti-reflection portion may be different from each other.

For example, the first or second anti-reflection portion includes at least one bottom layer; And at least one top layer disposed on the at least one bottom layer, and the refractive index of the bottom layer may be greater than the refractive index of the top layer.

A vehicle display unit according to an embodiment may include the touch display device; And a controller for controlling an operation of the touch display device.

The touch display device according to the embodiment has a lower reflectance than the touch display device according to the comparative example, and the brightness is improved, and the brightness is low, and the blackness is improved to the extent that the screen appears black when the power is not supplied to the touch display device. It is possible to have excellent visibility, and the visibility can be further improved because not only the reflectance is low but also has a high peripheral contrast ratio.

1 is a cross-sectional view of a touch display device according to a first embodiment.

2 is a cross-sectional view of an embodiment of the display panel illustrated in FIG. 1.

3 is a cross-sectional view of an embodiment of the touch panel illustrated in FIG. 1.

4 is a cross-sectional view of an embodiment of the light-transmissive adhesive shown in FIG. 1.

5 is a cross-sectional view of another embodiment of the light-transmissive adhesive shown in FIG. 1.

FIG. 6 is a sectional view of yet another embodiment of the translucent adhesive part shown in FIG. 1.

7 shows a cross-sectional view of one embodiment of the functional plate shown in FIG. 1.

8 is a cross-sectional view of an embodiment of the touch display device illustrated in FIG. 1.

9 is a sectional view of a touch display device according to a second embodiment.

FIG. 10 is a cross-sectional view of an embodiment of the first anti-reflective unit illustrated in FIG. 9.

FIG. 11 is a cross-sectional view of an embodiment of the second anti-reflective unit illustrated in FIG. 9.

12 is a cross-sectional view of an embodiment of the touch display device illustrated in FIG. 9.

13 is a graph illustrating reflectance for each wavelength of the touch display device according to the second embodiment and the second comparative example.

14 is a reference view for explaining a black feeling of a touch display device according to a second comparative example and a second embodiment.

15 is a sectional view of a touch display device according to a third embodiment.

FIG. 16 is a cross-sectional view of an embodiment of each of the first and second anti-reflection parts shown in FIG. 15.

17 is a cross-sectional view of an embodiment of the color unit illustrated in FIG. 15.

18 is a cross-sectional view of an embodiment of the touch display device illustrated in FIG. 15.

19A illustrates a local cross-sectional view of a touch display device according to a comparative example, and FIG. 19B illustrates a local cross-sectional view of a touch display device according to an embodiment.

20 is a diagram illustrating an exterior of a vehicle display unit according to an embodiment including a touch display device.

21 is a schematic block diagram of a vehicle display unit according to an embodiment.

FIG. 22 is a block diagram according to an embodiment of the CID shown in FIG. 21.

Hereinafter, the present invention will be described in detail with reference to the following examples, and the present invention will be described in detail with reference to the accompanying drawings. However, embodiments according to the present invention may be modified in many different forms, and the scope of the present invention should not be construed as being limited to the embodiments described below. Embodiments of the present invention are provided to more fully describe the present invention to those skilled in the art.

In the description of the present embodiment, when described as being formed on "on or under" of each element, the above (up) or down (down) ( on or under includes both that two elements are in direct contact with one another or one or more other elements are formed indirectly between the two elements.

In addition, when expressed as "up" or "on (under)", it may include the meaning of the downward direction as well as the upward direction based on one element.

Further, the relational terms such as "first" and "second," "upper / upper / up" and "lower / lower / lower", etc., as used below, may be used to refer to any physical or logical relationship between such entities or elements, or It may be used to distinguish one entity or element from another entity or element without necessarily requiring or implying an order.

In addition, although the touch display apparatuses 100, 100A, 200, 200A, 300, and 300A according to the first to third embodiments are described using the Cartesian coordinate system, they may be described using other coordinate systems. In the Cartesian coordinate system, the x-axis, the y-axis, and the z-axis shown in each drawing are orthogonal to each other, but the embodiment is not limited thereto. The x-axis, the y-axis, and the z-axis may intersect each other.

<First Embodiment>

Hereinafter, the touch display apparatuses 100 and 100A according to the first exemplary embodiment may include a display panel 110 and a touch panel 120, and the display panel 110 and the touch panel 120 may be formed of a transparent adhesive part (or, It may mean all devices adhered by the plurality of light-transmissive adhesive layers 130.

1 is a cross-sectional view of the touch display apparatus 100 according to the first embodiment.

Referring to FIG. 1, the touch display apparatus 100 according to the first embodiment may include a display panel 110, a touch panel 120, a transparent adhesive 130, a substrate 140, and It may include a functional plate 150.

The display panel 110 serves to provide an image. For example, the display panel 110 includes a liquid crystal display (LCD) panel, an organic light emitting diode (OLED) panel, a plasma display panel (PDP) panel, an electroluminescence (EL) panel, or a cathode ray tube (CRT) panel. However, the embodiment is not limited to the specific form of the display panel 110.

Hereinafter, when the display panel 110 illustrated in FIG. 1 is an LCD panel, an embodiment 110A of the display panel 110 will be described as follows.

2 illustrates a cross-sectional view of an embodiment 110A of the display panel 110 illustrated in FIG. 1.

Referring to FIG. 2, the display panel 110A may include a backlight unit 112 and a liquid crystal panel 114.

The backlight unit 112 may include a light source (not shown), a light guide plate (or an air gap) (not shown), a reflective sheet (not shown), a diffusion sheet (not shown), a prism sheet (not shown), and the like. have. The light guide plate converts a line light source from the light source into a surface light source. The reflective sheet is disposed below the backlight unit 112 to reflect the light emitted to the top. The diffusion sheet diffuses the light of the light guide plate. The prism sheet collects light at a specific angle. Since the liquid crystal panel 114 may not emit light by itself, the display panel 110A as shown in FIG. 2 may include the backlight unit 112.

The liquid crystal panel 114 is disposed between the backlight unit 112 and the transparent adhesive unit 130, and receives the light emitted from the backlight unit 112 to implement an image. The liquid crystal panel 114 may display an image using a liquid crystal cell whose light transmittance is adjusted according to an electric field.

For example, the liquid crystal panel 114 may include a thin film transistor array (TFTA) substrate 114-1, a color filter array (CFA) substrate 114-2, and a liquid crystal layer 114-. 3), the lower polarizer 114-4 and the upper polarizer 114-5 may be included.

The TFTA substrate 114-1 is disposed on the backlight unit (BLU) 112, and the CFA substrate 114-2 is disposed on the TFTA substrate 114-1. The CFA substrate 114-2 and the TFTA substrate 114-1 may be disposed to face each other. The liquid crystal layer 114-3 is filled between the TFTA substrate 114-1 and the CFA substrate 114-2.

The lower polarizer 114-4 is disposed between the backlight unit (BLU) 112 and the TFTA substrate 114-1. The lower polarizer 114-4 polarizes light incident from the backlight unit (BLU) 112 to the liquid crystal layer 114-3. The upper polarizer 114-5 is disposed between the CFA substrate 114-2 and the translucent junction 130 to polarize light transmitted from the liquid crystal layer 114-3 to the outside.

Each of the lower polarizer 114-4 and the upper polarizer 114-5 divides the light incident on them 114-4 and 114-5 into two polarization components orthogonal to each other, and is in the same direction as the polarization axis. By transmitting only the light oscillating in the light and absorbs or diffuses light in the other direction, it serves to make the light oscillating only in a specific direction.

For example, the material of each of the lower polarizer and the upper polarizer 114-4 and 114-5 may be Triacetylcellulose (TAC), but embodiments are not limited thereto.

The liquid crystal panel 114 having the above-described structure determines whether or not the electric field of the liquid crystal layer 114-3 corresponding to each pixel is applied through the TFTA substrate 114-1, and the electric field applied to the liquid crystal layer 114-3. The brightness may be adjusted by adjusting the transmission degree of the light incident from the backlight unit (BLU) 112. The liquid crystal panel 114 may be driven in a twisted nematic (TN) method or a transverse electric field method, but the embodiment is not limited to the driving type of the liquid crystal panel 114.

Meanwhile, referring again to FIG. 1, the touch panel 120 is disposed on the display panel 110 to sense a touch of the touch display apparatus 100.

A personal computer, a portable communication device, or other personal information processing device or the like generally configures an interface with a user using various input devices such as a keyboard, a mouse, and a digitizer. However, as the development of mobile communication equipment is expanded, input devices such as keyboards and mice are difficult to improve the product's completeness, and thus the demand for simpler and less malfunctionable and portable input devices is increasing day by day. have. In response to this demand, a touch panel has been proposed in which a user directly touches a screen with a hand or a pen to input information.

The touch panel 120 forms a metal electrode on an upper plate or a lower plate according to a method of sensing a touched portion, and determines a contact position in a state in which a DC voltage is applied as a voltage gradient according to resistance. type), a capacitive type forming an equipotential on the conductive film and detecting the position of the voltage change of the upper and lower plates according to the contact, and the contacted position by reading the LC value induced when the electronic pen contacts the conductive film. Although it may be classified as an electromagnetic induction method (Electro Magnetic type), etc., the embodiment is not limited to a specific sensing method of the touch panel 120.

FIG. 3 is a cross-sectional view of the touch panel 120 illustrated in FIG. 1 according to an embodiment 120A.

Referring to FIG. 3, the touch panel 120A may include an electrode pattern 122, a high refractive oxide layer 124, an insulating layer 126, and a pattern cover layer 128.

The electrode pattern 122 may include a first electrode pattern 122-1 and a second electrode pattern 122-2. The first electrode pattern 122-1 may include a plurality of x-axis electrodes spaced apart in the lateral direction, and the second electrode pattern 122-2 may include a plurality of y-axis electrodes spaced in the longitudinal direction. have. As such, the first electrode pattern 122-1 and the second electrode pattern 122-2 are formed to be arranged to cross each other, and the first electrode pattern 122-1 and the second electrode pattern 122-2 are arranged to cross each other. At the intersection of the capacitance is generated. Accordingly, the touch panel 120A may sense the touched part by sensing a position where the capacitance changes due to contact with the outside.

Each of the first and second electrode patterns 122-1 and 122-2 may be formed of a material having transparency and electric conductivity. For example, the first and second electrode patterns 122-1 and 122-2 may be implemented using indium tin oxide (ITO), but the embodiment may include the first and second electrode patterns 122-1. It is not limited to the specific materials of 122-2).

The first and second electrode patterns 122-1 and 122-2 are disposed between the transparent adhesive part 130 and the substrate 140 and may be electrically spaced apart from each other. 1 and 3, the first and second electrode patterns 122-1 and 122-2 are illustrated as being supported by the substrate 140, but embodiments are not limited thereto.

Alternatively, unlike shown in FIG. 3, according to another embodiment, the first and second electrode patterns 122-1 and 122-2 are not supported by the substrate 140 but instead of a separate transparent substrate (not shown). It may be supported by). For example, the first and second electrode patterns 122-1 and 122-2 may be disposed on the top and bottom surfaces of the separate transparent substrate, respectively, and the first and second electrodes on the same surface of the separate transparent substrate. The patterns 122-1 and 122-2 may be spaced apart from each other. Alternatively, the transparent substrate for supporting the first electrode pattern 122-1 and the transparent substrate for supporting the second electrode pattern 122-2 may be separately provided.

The transparent substrate may include at least one of a transparent PI film, a polyethylene naphthalate (PEN) film, a polyethylene terephthalate (PET) film, a polycarbonate (PC) film, or a poly styrene sulfonate (PSS) film. A film made of a transparent material may be used, or a film capable of reinforced coating with a film made of a synthetic resin may be used.

The high refractive oxide layer 124 may be disposed under the space between the first and second electrode patterns 122-1 and 122-2 and the first and second electrode patterns 122-1 and 122-2. have. Since the high refractive oxide layer 124 is disposed in a space in which the first and second electrode patterns 122-1 and 122-2 are spaced from each other, the 122-1 and 122-2 are electrically spaced from each other (or, Insulation). In addition, the high refractive oxide layer 124 may also serve to lower the reflectance.

For example, the high refractive oxide layer 124 may include at least one of Al ₂ O ₃ , TiO _2, or ZrO ₂ , but the embodiment is not limited to a specific material of the high refractive oxide layer 124.

In some cases, the high refractive oxide layer 124 may be omitted. In this case, instead of the high refractive oxide layer 124, the insulating material may be spaced apart from each other by the first and second electrode patterns 122-1 and 122-2. It may be arranged in a space to electrically insulate these 122-1, 122-2 from each other.

In addition, the insulating layer 126 may be disposed between the first and second electrode patterns 122: 122-1 and 122-2 and the substrate 140. For example, the insulating layer 126 may include an insulating material, for example, SiO ₂ , but the embodiment is not limited to a specific material of the insulating layer 126. In some cases, the insulating layer 126 may be omitted.

The pattern cover layer 128 may be disposed between the insulating layer 126 and the substrate 140 to hide the first and second electrode patterns 122-1 and 122-2 from being exposed to the outside. have. As such, the pattern cover layer 128 may be formed of any material as long as it has a light transmittance and can hide the exposure of the first and second electrode patterns 122-1 and 122-2 to the outside. For example, the pattern cover layer 128 may include Nb ₂ O ₅ , but the embodiment is not limited to a specific material of the pattern cover layer 128.

The first and second electrode patterns 122-1 and 122-2 may have a minute width, for example, 15 μm or less, but may be viewed from the outside of the touch display apparatus 100. Therefore, when the pattern cover layer 128 is disposed, the first and second electrode patterns 122-1 and 122-2 may be hidden without being seen from the outside. In some cases, the pattern cover layer 128 may be omitted.

Meanwhile, referring back to FIG. 1, the substrate 140 may be disposed on the touch panel 120 to cover and protect the screen generated by the display panel 110. That is, the substrate 140 may serve to prevent breakage of the touch panel 120 due to collision with the outside. In addition, as described above, the substrate 140 may also support the first and second electrode patterns 122-1 and 122-2.

The substrate 140 may be implemented in the form of at least one of glass, plastic, or film.

For example, the substrate 140 may include at least one of tempered glass, tempered coating film, LCD glass, or a plastic substrate for a flexible panel, but the embodiment is not limited to a specific kind of the substrate 140.

For example, the substrate 140 may be formed of tempered glass manufactured by heating the plate glass to a temperature close to the softening temperature, quenching with compressed cooling air, compressing the glass surface portion, and tensilely straining the interior thereof. Such tempered glass usually has higher bending strength, impact resistance and heat resistance than glass.

In addition, the substrate 140 may be embodied as a reinforcement coating film manufactured by forming a reinforcement coating layer to increase hardness on the surface of the film substrate.

Meanwhile, the transparent adhesive part 130 illustrated in FIG. 1 is disposed between the display panel 110 and the touch panel 120, and serves to bond the display panel 110 and the touch panel 120 to each other.

According to the embodiment, the transparent adhesive part 130 may include a plurality of transparent adhesive layers 130-1 to 130-k having different refractive indices. Where k is a positive integer of 2 or greater.

Each of the plurality of light-transmissive adhesive layers 130-1 to 130-k may have a refractive index between 1.3 and 1.7, but embodiments are not limited to specific refractive indices of the plurality of light-transmissive adhesive layers 130-1 to 130-k.

In addition, when the total thickness T of the translucent adhesive part 130 is smaller than 300 μm, it may be difficult to bond the display panel 110 and the touch panel 120 to the plurality of translucent adhesive layers 130-1 to 130-k. It may be difficult to implement in a stacked form. In addition, when the total thickness T of the light-transmissive adhesive 130 is greater than 400 μm, the light-transmissive adhesive 130 is unnecessarily thick so that air may exist or light corresponding to the screen emitted from the display panel 110. The light-transmissive adhesive portion 130 may be absorbed. Thus, the total thickness T of the light-transmissive adhesive 130 may be between 300 μm and 400 μm, preferably 350 μm, but embodiments are not limited to a specific total thickness T of the light-transmissive adhesive 130.

Further, regardless of the number of the plurality of transparent adhesive layers 130-1 to 130-k and the thickness of each of the transparent adhesive layers 130-1 to 130-k, the transparent adhesive portion 130 has a total thickness of between 300 μm and 400 μm. May have (T).

In addition, the transparent adhesive portion 130 may have a size of 330 mm x 140 mm, the embodiment is not limited to a specific size of the transparent adhesive portion 130. Here, the thickness of the light-transmissive adhesive portion 130 means the thickness in the z-axis direction, and the size of the light-transmissive adhesive portion 130 may mean the size of the plane formed between the y-axis and the x-axis.

In addition, each of the plurality of light-transmitting adhesive layers 130-1 to 130-k may be formed of a material having adhesion (or adhesion) and light transmitting properties. For example, each of the light-transmissive adhesive layers 130-1 to 130-k may be formed of a silicon-based or acrylic material, and may be one-component or two-component.

In addition, each of the plurality of light-transmissive adhesive layers 130-1 to 130-k may be an optically clear resin (OCR), an optically clear adhesive (OCA), or a liquid optically clear adhesive (LOCA), which is a double-sided adhesive. Liquid Optically Clear Adhesive).

In particular, when each of the plurality of light-transmitting adhesive layers 130-1 to 130-k is implemented by OCR, OCA, or LOCA, an air gap may not exist or be reduced between the display panel 110 and the touch panel 120. Therefore, visibility can be improved. In particular, according to the embodiment, by using at least two of OCR, OCA and LOCA, to implement a plurality of light-transmitting adhesive layer (130-1 to 130-k) in a multilayer structure having different refractive index, the brightness is improved and black The feeling can be improved to have high visibility. Here, the black feeling may refer to the degree that the screen appears black in a state where power is not supplied to the touch display apparatus 100.

Looking at the manufacturing process of each light-transmitting adhesive layer (130-1 to 130-k) as follows. However, the embodiment is not limited to the specific manufacturing process of each light-transmitting adhesive layer (130-1 to 130-k).

A material for forming the light-transmissive adhesive layer 130-1 may be applied onto the display panel 110. Alternatively, a material for forming a transparent adhesive layer 130-k may be applied onto the touch panel 120. In this case, the coating method may be performed using a dispensing, screen printing, or slit die method.

The applied material is then primarily cured. The curing method includes a thermal curing method or a UV curing method. For example, the lamp used for curing may be a mercury lamp, a metal lamp, a gallium lamp, an arc lamp, a xenon lamp, or a UV-LED lamp. have. In this case, the lamp may have a bar shape. For example, the light-transmissive adhesive layer 130-1 or 130-k may be formed using an ultraviolet curable resin based on a material cured in response to ultraviolet light, in which case the light-transmissive adhesive layer 130-1 or 130-k is formed. May have a refractive index between 1.3 and 1.7,

When the light-transmissive adhesive layer 130-1 or 130-k is formed by the UV curing method, it may be excellent in life or heat generation.

Other translucent adhesive layers 130-2 to 130-k (or 130-1 to 130-k-1) may be formed in the same manner as described above.

Alternatively, the plurality of light-transmissive adhesive layers 130-1 to 130-k, which are not completely cured, are manufactured in a vacuum state, and then protected with a protective film and the like, and after peeling off the protective film, the display panel 110 (or the touch panel ( 120)). Thereafter, after curing the plurality of light-transmitting adhesive layers 130-1 to 130-k applied to the display panel 110 (or the touch panel 120), the touch panel 120 (or the display panel 110). )) May be bonded to the display panel 110 (or the touch panel 120) to which the plurality of light-transmitting adhesive layers 130-1 to 130-k are applied by vacuum. In this case, various measures may be taken to prevent bubbles or voids from occurring in the plurality of light-transmitting adhesive layers 130-1 to 130-k.

Meanwhile, the reflectance at which light is reflected by the light-transmissive adhesive part 130 depends on at least one of the refractive index, the thickness, and the number k of the light-transmissive adhesive layers, respectively, of the plurality of light-transmissive adhesive layers 130-1 to 130-k. Can vary. This will be described later.

4 is a cross-sectional view of an embodiment 130A of the light-transmissive adhesive part 130 shown in FIG. 1.

The translucent adhesive part 130A illustrated in FIG. 4 may include first and second translucent adhesive layers 132 and 134.

The first light transmitting adhesive layer 132 may be disposed on the display panel 110, and the second light transmitting adhesive layer 134 may be disposed on the first light transmitting adhesive layer 132. The first refractive index n1 of the first transparent adhesive layer 132 and the second refractive index n2 of the second transparent adhesive layer 134 may be different from each other.

In example embodiments, the first light-transmitting adhesive layer 132 may have a first refractive index n1 of 1.51 and a first thickness T1 of 100 μm. In this case, the second light-transmitting adhesive layer 134 may have a second refractive index n2 of 1.41 and a second thickness T2 of 250 μm.

According to another embodiment, the first light-transmitting adhesive layer 132 may have a first refractive index n1 of 1.57 and a first thickness T1 of 300 μm. In this case, the second light-transmissive adhesive layer 134 may have a second refractive index n1 of 1.47 and a second thickness T2 of 100 μm.

FIG. 5 is a sectional view of another embodiment 130B of the light-transmissive adhesive part 130 shown in FIG. 1.

Referring to FIG. 5, the translucent adhesive part 130B may include first, second and third translucent adhesive layers 132, 134, and 136. The number of the plurality of light-transmissive adhesive layers 130-1 to 130-k shown in FIG. 4 is two (that is, k = 2), whereas the number of the light-transmissive adhesive layers 130-1 to 130-k shown in FIG. 5 is shown. ) Is three (that is, k = 3). That is, the plurality of light-transmissive adhesive layers 130B shown in FIG. 5 further include a third light-transmissive adhesive layer 136 unlike the plurality of light-transmissive adhesive layers 130A shown in FIG. 4.

In FIG. 5, the third transparent adhesive layer 136 is disposed between the display panel 110 and the first transparent adhesive layer 132. The first transparent adhesive layer 132 is disposed between the third transparent adhesive layer 136 and the second transparent adhesive layer 134, and the second transparent adhesive layer 134 is disposed between the first transparent adhesive layer 132 and the touch panel 120. Can be placed in.

For example, the first transparent adhesive layer 132 has a first refractive index n1 of 1.51, the second transparent adhesive layer 134 has a second refractive index n2 of 1.41, and the third transparent adhesive layer 136 It may have a third refractive index (n3) of 1.41. In this case, the reflectance may vary depending on the thicknesses of the first, second, and third transparent adhesive layers 132, 134, and 136. For example, the first to third light-transmitting adhesive layers 132, 134 in the state where the first to third refractive indices n1, n2, and n3 of the first to third light-transmitting adhesive layers 132, 134, and 136 are fixed in this manner. , 136, the first to third thicknesses T1 to T3 may vary as follows.

According to one embodiment, the first thickness T1 of the first transparent adhesive layer 132 is 100 μm, the second thickness T2 of the second transparent adhesive layer 134 is 50 μm, and the third transparent adhesive layer 136 The third thickness T3 of) may be 200 μm.

According to another embodiment, the first thickness T1 of the first transparent adhesive layer 132 is 50 μm, the second thickness T2 of the second transparent adhesive layer 134 is 50 μm, and the third transparent adhesive layer 136 The third thickness T3 of) may be 300 μm.

As shown in FIGS. 4 and 5, reflectances according to refractive indices and thicknesses of the plurality of light-transmitting adhesive layers 132, 134, and 136 will be described later.

FIG. 6 is a sectional view of yet another embodiment 130C of the translucent adhesive part 130 shown in FIG. 1.

Referring to FIG. 6, the plurality of light-transmissive adhesive layers included in the light-transmissive adhesive part 130C may have pair structures 138-1 to 138 -M repeatedly stacked. Here, M is a positive integer of 2 or more.

Each of the pair structures 138-1 to 138-M may include bottom layers 138B-1 to 138B-M and top layers 138T-1 to 138T-M. That is, the first pair structure 138-1 includes the bottom layer 138B-1 and the top layer 138T-1, and the M-th pair structure 138 -M includes the bottom layer 138B-M and the top layer ( 138T-M).

Meanwhile, referring again to FIG. 1, the function plate 150 may be disposed on the substrate 140 to perform various functions.

For example, the functional plate 150 may include an anti-glare (AG) anti-glare (or anti-glare layer), an anti-reflection (AR) or anti-reflective layer (AF) It may include at least one of the (finger) portion (or finger protection layer).

The anti-glare (AG) part serves to prevent glare, the anti-reflective (AR) part to prevent reflection, and the anti-finger (AF) part to the touch display device 100 such as a finger or a stylus. It may serve to prevent the touch display apparatus 100 from being contaminated by the touched member.

The touch display apparatus 100 does not necessarily include the function plate 150, and in some cases, the function plate 150 may be omitted.

FIG. 7 shows a cross-sectional view of one embodiment 150A of the functional plate 150 shown in FIG. 1.

The substrate 140A shown in FIG. 7 corresponds to the embodiment of the substrate 140 shown in FIG. 1 and performs the same role.

Referring to FIG. 7, the function plate 150A may include a glare prevention part 152, an antireflection part 154, and a finger prevention part 156.

The anti-glare portion 152 may be disposed between the substrate 140A and the anti-reflection portion 154. For example, the anti-glare portion 152 may be implemented by a separate layer disposed between the substrate 140A and the anti-reflection portion 154, but the embodiment is not limited thereto. According to another embodiment, as shown in FIG. 7, the antiglare unit 152 may be implemented by forming a wavy pattern on the substrate 140A.

The anti-reflection portion 154 may be disposed on the anti-glare portion 152. The anti-reflection unit 154 may increase the sharpness of the touch display apparatus 100 by suppressing the reflection of light incident to the touch display apparatus 100 from the outside as much as possible. Light that is not reflected by the anti-reflection unit 154 may be prevented from being reflected again by members disposed under the anti-reflection unit 154.

Referring to FIG. 7, the anti-reflective unit 154 may have a structure in which a plurality of pair structures 154-1 to 154-N are repeated. Where N is a positive integer of 2 or greater. Each pair structure 154-1 to 154-N may include bottom layers 154B-1 to 154B-N and top layers 154T-1 to 154T-N. That is, the first pair structure 154-1 includes a bottom layer 154B-1 and a top layer 154T-1, and the N-th pair structure 154 -N includes a bottom layer 154B-N and a top layer ( 154T-N).

For example, the bottom layers 154B-1 to 154B-N in each pair structure 154-1 to 154-N are relatively higher refractive index layers than the top layers 154T-1 to 154T-N, and the top layer 154T. -1 to 154T-N may be a low refractive index layer relative to the bottom layers 154B-1 to 154B-N, but embodiments are not limited thereto. To this end, the bottom layers 154B-1 to 154B-N may include at least one of ATO (antimony-doped tin oxide film), ZrO ₂ , TiO _2, or ZnS as the high refractive index layer, and the top layer 154T−. 1 to 154T-N) may include SiO 2 as the low refractive index layer, but embodiments are not limited thereto.

The functional plate 150A shown in FIG. 7 is illustrated as including all of the anti-glare portion 152, the anti-reflection portion 154, and the anti-finger portion 156, but the embodiment is not limited thereto.

That is, the functional plate 150 shown in FIG. 1 according to another embodiment may include only the anti-glare unit 152, the anti-reflection unit 154, or the anti-finger unit 156, or the anti-glare unit ( It may include only the 152 and the anti-reflective portion 154, may include only the anti-reflective portion 154 and the finger preventive portion 156, and include only the anti-glare portion 152 and the finger preventive portion 156. You may.

In addition, the above-mentioned plurality of light-transmissive adhesives 130 may include a specific structure of the display panel 110, a specific structure of the touch panel 120, the presence or absence of a substrate 140, a specific shape, and the presence of a functional plate 150, It is not limited to a particular form. That is, FIGS. 2, 3, and 7 are only examples to help understanding the light-transmissive adhesive part 130. Therefore, regardless of the structure of the display panel 110 and the touch panel 120, and whether there is at least one of the substrate 140 or the functional plate 150, the transparent adhesive portion 130 is a plurality of transparent adhesive layer ( If the 130-1 to 130-k may have the aforementioned features, the touch display apparatus 100 according to the first embodiment may be applied.

Hereinafter, reflection characteristics of the touch display apparatus according to the first comparative example and the first embodiment will be described with reference to the accompanying drawings.

FIG. 8 is a cross-sectional view of an embodiment 100A of the touch display apparatus 100 illustrated in FIG. 1.

The display panel 110A, the upper polarizer 114-5A, the touch panel 120B, the transparent adhesive 130, the substrate 140A and the function plate 150A shown in FIG. 8 are shown in FIGS. 1 and 2. The display panel 110, the upper polarizer 114-5, the touch panel 120, the transparent adhesive unit 130, the substrate 140, and the function plate 150 correspond to the respective embodiments.

Looking at the constituent material and the refractive index of each part shown in Figure 8 are as follows.

The upper polarizer 114-5A of the display panel 110A has a refractive index of 1.5, and each of the plurality of light-transmitting adhesive layers 130-1 to 130-k included in the light-transmissive adhesive 130 is embodied by OCR, and transmits light. The refractive index of one of the adhesive layers 136 may be 1.48, the refractive index of the other 132 may be 1.41, and the refractive index of the other one 134 may be 1.48.

In addition, the refractive index of Al ₂ O ₃ implementing the high refractive oxide layer 124 is 1.57, and the refractive index of ITO implementing the first and second electrode patterns 122: 122-1 and 122-2 is 1.96, and insulation. The refractive index of SiO ₂ constituting the layer 126 may be 1.47, and the refractive index of Nb ₂ O ₅ constituting the pattern cover layer 128 may be 2.25.

In addition, the substrate 140A is formed of glass (glss), and bottom layers 154B-1 and 154B-2 of the first and second pair structures 154-1 and 154-2 of the anti-reflection portion 154 are also provided. The refractive index of TiO ₂ , which embodies)), is 2.18, and the refractive index of SiO ₂ , which embodies the top layers 154T-1 and 154T-2, may be 1.45.

In the touch display apparatus 100A implemented as shown in FIG. 8, the first reflectance R1 on the substrate 140A may be 0.6%, and the second reflectance R2 on the transparent adhesive part 130 may be 0.4. %, And the third reflectance R3 on the upper polarizer 114-5A may be 1.1%.

Meanwhile, in the touch display device according to the first comparative example, in the touch display device 100A according to the embodiment illustrated in FIG. 8, the light-transmissive adhesive part 130 includes a plurality of first to third light-transmitting adhesive layers 130-1 to 130-. This is the case when the light-transmissive adhesive layer has a refractive index of 1.41, not implemented as 3). In the touch display device of the first comparative example, the first and second reflectances R1 and R2 are the same as the touch display device 100A according to the first embodiment, but the third reflectance R3 is 1.3%. It can be seen that it is 0.2% larger than the touch display apparatus 100A according to the first embodiment. As described above, according to the embodiment, the third reflective index R3 is reduced by 0.2% by implementing the transparent adhesive part 130 as a plurality of transparent adhesive layers 130-1 to 130-3 having different refractive indices instead of a single layer. It can be seen.

That is, the total reflectance RT which is the sum of the first to third reflectances R1, R2, and R3 is 2.3% for the touch display device according to the first comparative example, whereas the touch display device 100A according to the first embodiment is Is 2.1%, which is relatively smaller than the first comparative example.

In general, when the light incident through the first layer proceeds to the second layer, the reflectance of the light reflected from the second layer may be expressed by Equation 1 below.

Here, N1 represents the refractive index of the first layer, N2 represents the refractive index of the second layer, and ΔN represents the difference between N1 and N2.

Referring to Equation 1, it can be seen that when the refractive index difference ΔN between the first layer and the second layer is reduced, the reflectance R decreases.

Considering the above Equation 1, in the case of the touch display device according to the first comparative example, the light incident on the transparent adhesive part 130 (corresponding to the first layer of Equation 1) formed of a single layer is applied to the display panel 110. 110A) (corresponding to the second layer of Equation 1), the refractive index of the translucent adhesive portion 130 (corresponding to N1 of Equation 1) and the refractive index of the display panels 110 and 110A (N2 of Equation 1). There is a limit to reducing the difference ΔN between

On the other hand, in the case of the touch display apparatuses 100 and 100A according to the first embodiment, the refractive index difference ΔN between the plurality of light-transmitting adhesive layers 130-1 to 130-k and the display panels 110 and 110A having different refractive indices is different. ) Can be reduced than that of the first comparative example by adjusting the refractive index difference of the plurality of light-transmitting adhesive layers 130-1 to 130-k having different refractive indices.

For example, the first refractive index difference between the i-th refractive index of the i (where 1 ≦ i ≦ k−1) light-transmissive adhesive layer among the plurality of light-transmissive adhesive layers 130-1 to 130-k and the refractive index of the display panel 110 is It may be less than the second refractive index difference between the jth refractive index of the jth transparent adhesive layer (herein, 2 ≦ j ≦ k) located farther from the display panel 110 than the ith transparent adhesive layer.

As described above, since the embodiment includes a plurality of light-transmitting adhesive layers having different refractive indices, it is possible to further reduce the reflectance R3 at which light is reflected by the display panels 110 and 110A than in the first comparative example.

As a result, the touch display apparatuses 100 and 100A according to the first exemplary embodiment may use the light-transmissive adhesive unit 130 to bond the display panel 110 and the touch panel 120 to a plurality of layers having different refractive indices instead of a single layer. By implementing, the reflectance and brightness index are reduced. As described above, since the reflectance and the brightness index are reduced, the touch display apparatuses 100 and 100A according to the first embodiment may have improved luminance and blackness compared to the touch display apparatus according to the first comparative example, thereby providing high visibility. Can be.

Second Embodiment

Hereinafter, the touch display apparatuses 200 and 200A according to the second embodiment include a display panel 210 and a touch panel 220, and the color units 260 and 260A and the first upper portion of the touch panel 220. 2 may mean any device in which the anti-reflection parts 270 and 270A are disposed.

9 is a cross-sectional view of the touch display apparatus 200 according to the second embodiment.

Referring to FIG. 9, the touch display device 200 according to the second embodiment may include a display panel 210, a touch panel 220, a transparent adhesive 230, a substrate 240, The first anti-reflection (AR) unit 250, the color unit 260, the second anti-reflection unit 270, and the anti-finger (AF) unit 280 may be included.

The display panel 210, the touch panel 220, and the substrate 240 illustrated in FIG. 9 correspond to the display panel 110, the touch panel 120, and the substrate 140 illustrated in FIG. 1, respectively, and have the same function. Since the description is omitted, redundant descriptions are omitted. Accordingly, descriptions of the display panels 110 and 110A, the touch panels 120 and 120A, and the substrate 140 described above with reference to FIGS. 1 to 3 are described with reference to the display panel 210 and the touch panel 220 shown in FIG. 9. ) And the substrate 240.

Meanwhile, the translucent adhesive part 230 illustrated in FIG. 9 is disposed between the display panel 210 and the touch panel 220, and serves to bond the display panel 210 and the touch panel 220 to each other. Translucent adhesive 230 may have a refractive index of between 1.3 and 1.7, but the embodiment is not limited to a specific refractive index of the translucent adhesive 230.

In addition, the light-transmissive adhesive 230 may correspond to the light-transmissive adhesive 130 shown in FIG. 1 or 8, and overlapping description thereof will be omitted. In this case, features of the size and material of the plurality of light-transmissive adhesive layers 130, 130A, 130B, and 130C shown in FIGS. 1, 4 to 6, and 8, and a method of manufacturing the same are described in the light-transmissive adhesive unit 230. Can also be applied.

Meanwhile, referring back to FIG. 9, the first anti-reflection unit 250 may be disposed on the substrate 240 to prevent reflection of light.

FIG. 10 is a sectional view of an embodiment 250A of the first anti-reflective unit 250 shown in FIG. 9.

Referring to FIG. 10, the first anti-reflection unit 250A disposed on the substrate 240 may suppress the reflection of light incident from the outside to the touch display device 200 to maximize the sharpness of the touch display device 200. have. Light that is not reflected by the first anti-reflective unit 250A may be prevented from being reflected again by members disposed under the first anti-reflective unit 250A.

10, the first anti-reflection portion 250A may have a form in which the first-first to first-P pair structures 250-1 to 250 -P are repeated. Where P is a positive integer of 2 or greater. Each pair structure 250-1 to 250 -P may include first bottom layers 250B-1 to 250B-P and first top layers 250T-1 to 250T-P. That is, the first-first pair structure 250-1 includes the first-first bottom layer 250B-1 and the first-first top layer 250T-1, and the first-P pair structure 250-P. ) May include the first-P bottom layer 250B-P and the first-P top layer 250T-P.

For example, in each pair structure 250-1 to 250-P, the first bottom layers 250B-1 to 250B-P are relatively high refractive index layers compared to the first top layers 250T-1 to 250T-P. The first top layers 250T-1 to 250T-P may be relatively low refractive index layers compared to the first bottom layers 250B-1 to 250B-P, but embodiments are not limited thereto. That is, the refractive index of each of the first bottom layers 250B-1 to 250B-P may be greater than that of each of the first top layers 250T-1 to 250T-P.

For example, the first bottom layers 250B-1 to 250B-P may include at least one of ATO (antimony-doped tin oxide film), ZrO ₂ , TiO _2, or ZnS as a high refractive index layer. The first top layers 250T-1 to 250T-P may include SiO ₂ as the low refractive index layer, but embodiments are not limited thereto.

Meanwhile, referring back to FIG. 9, the second anti-reflection portion 270 may be disposed on the first anti-reflection portion 250. The second anti-reflection portion 270 may serve to prevent reflection of light like the first anti-reflection portion 250.

FIG. 11 is a sectional view of an embodiment 270A of the second anti-reflection portion 270 shown in FIG. 9.

Referring to FIG. 11, the second anti-reflection unit 270A may increase the sharpness of the touch display apparatus 200 by suppressing the reflection of light incident to the touch display apparatus 200 from the outside as much as possible. Light that is not reflected by the second anti-reflective portion 270A is not reflected again by the members disposed under the second anti-reflective portion 270A, for example, the first anti-reflective portions 250 and 250A. Can be prevented.

11, the second anti-reflection portion 270A may have a form in which the second-first through second-Q pair structures 270-1 through 270 -Q are repeated. Where Q is a positive integer of 2 or greater. Each pair structure 270-1 to 270-Q may include a second bottom layer 270B-1 to 270B-Q and a second top layer 270T-1 to 270T-Q. That is, the 2-1 pair structure 270-1 includes a 2-1 bottom layer 270B-1 and a 2-1 top layer 270T-1, and a 2 -Q pair structure 270 -Q. ) May include a second-Q bottom layer 270B-Q and a second-Q top layer 270T-Q.

For example, in each pair structure 270-1 to 270-Q, the second bottom layers 270B-1 to 270B-Q are higher refractive index layers than the second top layers 270T-1 to 270T-Q. The first top layers 270T-1 to 270T-Q may be relatively low refractive index layers compared to the second bottom layers 270B-1 to 270B-Q, but embodiments are not limited thereto. That is, the refractive index of each of the second bottom layers 270B-1 to 270B-Q may be greater than the refractive index of each of the second top layers 270T-1 to 270T-Q.

For example, the second bottom layers 270B-1 to 270B-Q may include at least one of ATO (antimony-doped tin oxide film), ZrO ₂ , TiO _2, or ZnS as a high refractive index layer. The second top layer 270T-1 to 270T-Q may include SiO ₂ as a low refractive index layer, but embodiments are not limited thereto.

In addition, the second anti-reflection parts 270 and 270A may have the same characteristics as the first anti-reflection parts 250 and 250A. For example, the number P of pair structures included in the second antireflection parts 270 and 270A and the number Q of pair structures included in the first antireflection parts 250 and 250A may be the same. have. In addition, the first thickness T11 of the first antireflection parts 250 and 250A and the second thickness T12 of the second antireflection parts 270 and 270A may be the same.

Alternatively, the second antireflection parts 270 and 270A may have different characteristics from those of the first antireflection parts 250 and 250A. For example, the number Q of pair structures included in the second anti-reflection parts 270 and 270A may differ from the number P of pair structures included in the first anti-reflection parts 250 and 250A. . In addition, the first thickness T11 of the first antireflection parts 250 and 250A and the second thickness T12 of the second antireflection parts 270 and 270A may be different from each other.

Meanwhile, referring again to FIG. 9, the color unit 260 may be disposed between the first antireflection unit 250 and the second antireflection unit 270.

When the third thickness T13 of the color unit 260 illustrated in FIG. 9 is smaller than 10 μm, it may be difficult to reduce the total reflectance of the touch display apparatus 200 as desired. In addition, when the third thickness T13 of the color unit 260 is larger than 300 μm, the touch display apparatus 200 may be too dark, and thus may not be easily visible. For example, the third thickness T13 of the color portion 260 may be 10 μm to 300 μm, for example, 30 μm to 40 μm, and preferably 35 μm. It is not limited to a specific thickness.

In addition, the color unit 260 may include at least one of a transparent PI film, a PEN film, a PET film, a PC film, a COP film, a TAC film, or a PSS film. It is not limited to.

In addition, the color unit 260 may be a hard coated film.

In addition, the color unit 260 may be a film formed to have a black color.

In addition, the color unit 260 may have a light isotropic property.

As described above, when the color unit 260 is disposed on the first anti-reflective unit 250 and the second anti-reflective unit 270 is disposed on the color unit 260, the entire touch display apparatus 200 is disposed. The reflectance may be lowered to improve visibility. This will be described later.

Meanwhile, referring back to FIG. 9, the finger protection part 280 may be disposed on the second reflection prevention part 270. As such, when the finger protection unit 280 is disposed, the finger display unit 280 may serve to prevent the touch display device 200 from being contaminated by a member touched by the touch display device 200 such as a finger or a stylus. In some cases, the finger protection unit 280 may be omitted.

In addition, although not shown, a glare prevention layer that serves to prevent glare may be further disposed between the substrate 240 and the first anti-reflection portion 250. For example, the anti-glare layer may be implemented by a separate layer disposed between the substrate 240 and the first anti-reflection portion 250, but the embodiment is not limited thereto. According to another embodiment, the antiglare layer may be implemented by forming a wavy pattern on the substrate 240 as shown in FIG. 7.

In addition, the above-described color unit 260 and the second anti-reflection unit 270 may include a specific structure of the display panel 210, a specific structure of the touch panel 220, a specific material of the transparent adhesive unit 230, and a substrate 240. Is not limited to the presence or the specific material, the specific structure of the first anti-reflection portion 250. That is, the above description of the above is just one example to help the understanding of the color unit 260 and the second anti-reflection unit 270. Accordingly, the touch panel (regardless of the structure of the display panel 210 and the touch panel 220 and at least one of the transparent adhesive 230, the substrate 240, or the first anti-reflective unit 250) If the color unit 260 and the second anti-reflective unit 270 may be disposed as described above on the 220, the touch display apparatus 200 according to the embodiment may be applied.

Hereinafter, the characteristics of the touch display apparatus according to the second comparative example and the second embodiment will be described with reference to the accompanying drawings.

FIG. 12 is a sectional view of an embodiment 200A of the touch display device 200 illustrated in FIG. 9.

The display panel 210, the transparent adhesive part 230A, the touch panel 220A, the substrate 240A, the first antireflection part 250A, the color part 260A, and the second antireflection part 270A shown in FIG. 12. ) Is shown in FIG. 9, the display panel 210, the transparent adhesive 230, the touch panel 220, the substrate 240, the first anti-reflective unit 250, the color unit 260, and the second anti-reflective unit. 270 corresponds to each embodiment. In addition, the finger protection unit 280 illustrated in FIG. 9 is omitted in the touch display device 200A illustrated in FIG. 12.

Looking at each of the parts shown in Figure 12 in detail as follows.

The transparent adhesive part 230A may be implemented with an OCR and have a refractive index of 1.41.

The high refractive oxide layer 224, the first and second electrode patterns 222, the insulating layer 226, and the pattern cover layer 228 illustrated in FIG. 12 may include the high refractive oxide layer 124, the first and second layers illustrated in FIG. 3. Since they correspond to the two electrode patterns 122: 122-1 and 122-2, the insulating layer 126, and the pattern cover layer 128, overlapping descriptions are omitted.

The refractive index of Al ₂ O ₃ implementing the high refractive oxide layer 224 is 1.57, the refractive index of ITO implementing the first and second electrode patterns 222 is 1.96, and SiO ₂ implementing the insulating layer 226. The refractive index is 1.47, and the refractive index of Nb ₂ O ₅ implementing the pattern cover layer 228 may be 2.25.

In addition, the substrate 240A is formed of glass (glss), and the first bottom layer of each of the first-first and first-second pair structures 250-1 and 250-2 of the first anti-reflection portion 250A The refractive index of TiO ₂ implementing (250B-1, 250B-2) may be 2.18, and the refractive index of SiO ₂ implementing the first top layers 250T-1 and 250T-2 may be 1.45. In addition, the color portion 260A may be a black PET film.

Of TiO ₂ implementing the second bottom layers 270B-1 and 270B-2 of the 2-1 and 2-2 pair structures 270-1 and 274-2 of the second anti-reflection portion 270A, respectively. The refractive index is 2.18, and the refractive index of SiO ₂ implementing the second top layers 270T-1 and 270T-2 may be 1.45.

The total reflectance R of the touch display device 200A implemented as shown in FIG. 12 was measured to be 1.485%.

In the touch display device according to the second comparative example, the color unit 260A and the second anti-reflective unit 270A are omitted in the touch display device 200A according to the second embodiment shown in FIG. 12. The total reflectance of the touch display device of the second comparative example was measured to be 2.42%. As described above, according to the embodiment, by arranging the color part 260A and the second antireflection part 270A on the first antireflection part 250A, the total reflectance is 0.935% than the touch display device according to the second comparative example. It was confirmed that the decrease.

Hereinafter, the touch display apparatus 200A according to the second embodiment implemented as shown in FIG. 12 and the second comparative example in which the color unit 260A and the second anti-reflective unit 270A are omitted in FIG. 12 will be described. By comparing the reflectance and brightness index (L *) for each wavelength of the touch display device as follows.

FIG. 13 is a graph showing reflectance for each wavelength of a touch display device according to a second embodiment and a second comparative example, wherein the horizontal axis represents wavelength λ of light incident on the touch display device, and the vertical axis represents reflectance of the touch display device, respectively. Indicates.

Referring to FIG. 13, when the wavelength λ of light incident on the touch display device according to the second embodiment is between about 410 nm and 730 nm, the reflectance 310 of the touch display device according to the second comparative example is higher than that in FIG. It can be seen that the reflectance 320 of the touch display device 200A according to the second embodiment is smaller. Therefore, when the light in the wavelength band is incident, the reflectance of the touch display apparatus 200A according to the second embodiment is lower than that of the touch display apparatus according to the second comparative example, so that visibility may be improved.

14 is a reference view for explaining a black feeling of a touch display device according to a second comparative example and a second embodiment.

An upper surface 272 of the second anti-reflection portion 270A illustrated in FIG. 14 corresponds to an upper surface 272 of the second anti-reflection portion 270A illustrated in FIG. 12.

The brightness index L * of the touch display apparatus may vary according to which angle the user views the touch display apparatus from among the various angles shown in FIG. 14.

When the touch display device is viewed in front, that is, when viewed at 90 ° illustrated in FIG. 14, the brightness index of the touch display device according to the second comparative example is 17.71, whereas the touch display according to the second embodiment is shown. It was confirmed that the brightness index of the device 200A is smaller as 12.86.

In addition, when the touch display device is viewed from the side, that is, viewed from 15 ° shown in FIG. 14, the brightness index of the touch display device according to the second comparative example is 10.8, whereas the touch display according to the second embodiment is shown. It was confirmed that the brightness index of the device 200A is smaller as 6.68.

In general, the brightness index (L *) represents the same brightness as human eyes, and the smaller the value, the closer to black. In consideration of this, since the brightness index L * of the touch display device according to the second embodiment is smaller than that of the touch display device according to the second comparative example, the touch display device 200 according to the second embodiment from the front and side surfaces is smaller. , 200A) can be seen that the black feeling is improved. That is, when the power supply to the touch display device is cut off, when the touch display device is viewed from the side, the touch display device according to the second comparative example appears grayish. On the other hand, it can be seen that the touch display apparatuses 200 and 200A according to the second embodiment have a lower brightness index than the touch display apparatus according to the second comparative example, thereby eliminating this phenomenon.

As described above, the touch display apparatuses 200 and 200A according to the second exemplary embodiment may include the color units 260 and 260A and the second antireflection units 270 and 270A on the first antireflection units 250 and 250A. By positioning, the reflectance is reduced to make the screen sharper and the brightness index is lowered to improve the blackness in front and side.

As a result, the touch display apparatuses 200 and 200A according to the second exemplary embodiment may provide better visibility than the touch display apparatus according to the second comparative example.

Third Embodiment

Hereinafter, the touch display apparatus 300 (300A) according to the third embodiment includes a display panel 310, a touch panel 320: 120A and 320B, and a substrate 340. First and second anti-reflection (AR) portions 352 and 354 and 354A and 354A are disposed below and above the substrate 340, respectively, and the substrate 340 and the second anti-reflection portion are disposed on the substrate 340. The reference numeral 354 may refer to any device in which the color unit 360A is disposed between 354: 354A.

15 is a cross-sectional view of the touch display apparatus 300 according to the third embodiment.

Referring to FIG. 15, the touch display device 300 according to the embodiment includes a display panel 310, a touch panel 320, a transparent adhesive part 330, a substrate 340, a first anti-reflective part 352, and a color. The unit 360 may include a second anti-reflective unit 354 and an anti-finger (AF) unit 380.

The display panel 310, the touch panel 320, and the substrate 340 illustrated in FIG. 15 may include the display panels 110 and 210, the touch panels 120 and 220, and the substrate 140 illustrated in FIGS. 1 and 9. And 240, respectively, and perform the same function, and thus redundant description thereof will be omitted. Accordingly, the descriptions of the above-described display panels 110, 110A, 210, the touch panels 120, 120A, 220, and the substrates 140, 240 are described with reference to the display panel 310 and the touch panel 320 illustrated in FIG. 15. And the substrate 340.

However, while the substrates 140 and 240 are disposed on the touch panels 120 and 220 in the touch display apparatuses 100 and 200 illustrated in FIG. 1 or 9, in the touch display apparatus 300 illustrated in FIG. 15. The first antireflection unit 352 is disposed on the touch panel 320, and the substrate 340 is disposed on the first antireflection unit 352. Therefore, in the touch panel 120A of FIG. 3 corresponding to the touch panel 320 of FIG. 15, the first and second electrode patterns 122-1 and 122-2 are formed of a light-transmissive adhesive part ( 330 and the first anti-reflection portion 352, and may be electrically spaced apart from each other, and the pattern cover layer 128 may be disposed between the insulating layer 126 and the first anti-reflection portion 352. have.

Meanwhile, the translucent adhesive part 330 illustrated in FIG. 15 corresponds to the translucent adhesive part 230 illustrated in FIG. 9, and performs the same function, and thus redundant description thereof will be omitted. In addition, similar to the light-transmissive adhesive portion 230 shown in FIG. 9, the light-transmissive adhesive portion 330 shown in FIG. 15 is the light-transmissive adhesive portions 130, 130A, 130B, and 130C shown in FIGS. 1, 4 to 6, and 8. ), And duplicate description thereof will be omitted. For example, characteristics of the size or material of the transparent adhesive parts 130, 130A, 130B, and 130C shown in FIGS. 1, 4 to 6, and 8, and a plurality of transparent adhesive layers 130-1 to 130-k. Description of each manufacturing method may be applied to the transparent adhesive portion 330.

Meanwhile, referring again to FIG. 15, the first anti-reflection unit 352 is disposed between the touch panel 320 and the substrate 340 to suppress the reflection of light incident to the touch display device 300 from the outside as much as possible. The sharpness of the touch display apparatus 300 may be increased. Light that is not reflected by the first anti-reflection unit 352 may be prevented from being reflected again by the members disposed under the first anti-reflection unit 352.

The first anti-reflection portion 352 illustrated in FIG. 15 may include at least one first bottom layer and at least one first top layer. At least one first top layer may be disposed on the at least one first bottom layer, and the refractive index of the first bottom layer may be greater than that of the first top layer.

According to an embodiment, the first anti-reflection portion 352 may be implemented as shown in FIG. 10. Accordingly, the description of the first anti-reflection unit 250A illustrated in FIG. 10 may also be applied to the first anti-reflection unit 352 illustrated in FIG. 15, and overlapping descriptions thereof will be omitted.

FIG. 16 illustrates a cross-sectional view of an embodiment 350 of each of the first and second anti-reflection portions 352 and 354 shown in FIG. 15.

According to another embodiment, as shown in FIG. 16, the first antireflection unit 350 may include the first-first top layer 350T-1 and the first-second to first- (V-1) pair structures 350. -2 to 350-(V-1)) and the first-V bottom layer 350B-V. The first-first top layer 350T-1 is disposed in place of the first-first pair structure 350-1, and the first-N bottom layer 350B-V instead of the first-V pair structure 350-V. Except for this arrangement, since the first antireflection unit 350B shown in FIG. 16 is the same as the first antireflection unit 250A shown in FIG. 10, a description of overlapping portions will be omitted. Here, V may be a positive integer of 2 or more.

According to another embodiment, the first anti-reflection portion 352 may include the first-second to first- (V-1) pair structures 350-2 to 350- (V-1) and the first-N burr. The term layer 350B-V may be included. That is, unlike the first antireflection unit 350 illustrated in FIG. 16, the first antireflection unit 352 according to another embodiment may not include the first-first top layer 350T-1. For example, the first anti-reflection portion 352 may have a structure 352A as illustrated in FIG. 18 described below.

According to another embodiment, the first anti-reflection portion 352 may include the first-first top layer 350T-1 and the first-second to first- (V-1) pair structures 350-2 to 350- ( V-1)). That is, unlike the first antireflection unit 350 shown in FIG. 16, the first antireflection unit 352 according to another embodiment may not include the first-V bottom layer 350B-V. .

On the other hand, the substrate 340 is disposed on the first anti-reflection portion 352, and may cover and protect the screen generated by the display panel 310. That is, the substrate 340 may serve to prevent damage of the touch panel 320 due to collision with the outside. In addition, as described above, the substrate 340 may also support the first and second electrode patterns 122-1 and 122-2.

Meanwhile, referring again to FIG. 15, the color unit 360 may be disposed between the substrate 340 and the second anti-reflection unit 354.

FIG. 17 is a sectional view 360A according to an embodiment of the color unit 360 shown in FIG. 15.

Referring to FIG. 17, the color unit 360A may include an adhesive layer 362, a color dye layer 364, a support layer 366, and a hard coating layer 368.

If the color portion 360A is disposed on the substrate 340 in the form of a film, the support layer 366 may serve to support the adhesive layer 362, the color dye layer 364, and the hard coating layer 368. have. For example, the support layer 366 may include at least one of a transparent PI film, a PEN film, a PET film, a PC film, a COP film, a TAC film, or a PSS film, but embodiments are not limited thereto. For example, the support layer 366 may be implemented as a low-cost PET film, or may be implemented as a TAC film without a rainbow phenomenon.

In addition, the surface 366-1 of the support layer 366 may be plasma surface treated. As such, when the surface 366-1 of the support layer 366 is plasma treated, the support layer 366 can be stably protected from scratches and the like.

In addition, the thickness 3231 of the support layer 366 may be 40 μm to 80 μm, but embodiments are not limited thereto.

The color dye layer 364 may be disposed between the support layer 366 and the substrate 340. The color dye layer 364 may be formed to have a black color, but the embodiment is not limited thereto.

In addition, the reflectance of the color dye layer 364 may be adjusted by adjusting the concentration of the dye included in the color dye layer 364. As the visible light transmittance (VLT) of the color dye layer 364 is lowered, the concentration of the dye included in the color dye layer 364 increases, and as the concentration of the dye increases, the reflectance of the color dye layer 364 is increased. Can be lowered. For example, when the first and second anti-reflective parts 352 and 354 are omitted, the transmittance, reflectance, and absorbance according to the visible light transmittance (VLT) of the color dye layer 364 may be as shown in Table 1 below. .

Referring to Table 1, the visible light transmittance (VLT) of the color dye layer 364 may be 35% to 70%, but embodiments are not limited thereto.

The adhesive layer 362 may be disposed between the color dye layer 364 and the substrate 340. For example, when the color portion 360A is implemented in the form of a film, the adhesive layer 362 serves to adhere the color portion 360A in the form of a film to the substrate 340.

In addition, the sum of the third thickness T232 of the color dye layer 364 and the third thickness T233 of the adhesive layer 362 may be 10 μm, but embodiments are not limited thereto.

In addition, the hard coating layer 368 may be disposed between the support layer 366 and the second anti-reflection portion 354. In some cases, the hard coating layer 368 may be omitted. The 3-4th thickness T234 of the hard coat layer 368 may be 2 μm, but embodiments are not limited thereto.

When the third thickness T23 of the color parts 360: 360A is smaller than 10 μm, it may be difficult to reduce the total reflectance of the touch display apparatus 300 by a desired amount. In addition, when the third thickness T23 of the color parts 360: 360A is greater than 300 μm, the touch display apparatus 300 may be too dark, and thus the visibility may not be good. For example, the third thickness T23 of the color parts 360: 360A may be 10 μm to 300 μm, for example, 52 μm to 92 μm, preferably 52 μm, but the embodiment may include the color part 360. It is not limited to the specific thickness of: 360A).

In addition, the color parts 360: 360A may have optical isotropic properties.

Meanwhile, referring again to FIG. 15, the second anti-reflection portion 354 may be disposed on the color portion 360. The second anti-reflection portion 354 may serve to prevent reflection of light like the first anti-reflection portion 352.

The second anti-reflection portion 354 may also have a structure as illustrated in FIGS. 10 and 16.

According to one embodiment, similar to the first anti-reflective unit 250A shown in FIG. 10, the second anti-reflective unit 354 may include the 2-1 to 2 -P pair structures 250-1 to 250 -P. ) May be repeated. Each pair structure 250-1 to 250 -P may include second bottom layers 250B-1 to 250B-P and second top layers 50T-1 to 50T-P. That is, the 2-1 pair structure 250-1 includes the 2-1 bottom layer 250B-1 and the 2-1 top layer 250T-1, and the 2-N pair structure 250 -P. ) May include a 2-P bottom layer 250B-P and a 2-P top layer 250T-P.

For example, in each pair structure 250-1 to 250-P, the second bottom layers 250B-1 to 250B-P are higher refractive index layers than the second top layers 250T-1 to 250T-P. The second top layer 250T-1 to 250T-P may be a low refractive index layer relatively to the second bottom layers 250B-1 to 250B-P, but embodiments are not limited thereto. That is, the refractive index of each of the second bottom layers 250B-1 to 250B-P may be greater than the refractive index of each of the second top layers 250T-1 to 250T-P.

For example, the second bottom layers 250B-1 to 250B-P may include at least one of ATO (antimony-doped tin oxide film), ZrO ₂ , TiO _2, or ZnS as a high refractive index layer. The second top layer 250T-1 to 250T-P may include SiO ₂ as a low refractive index layer, but embodiments are not limited thereto.

According to another embodiment, as shown in FIG. 16, the second anti-reflection unit 350 may include the second-first top layer 350T-1 and the second-second to second- (V-1) pair structures 350. -2 to 350-(V-1)) and the second-to-second bottom layer 350B-V. The second-first top layer 350T-1 is disposed instead of the second-one pair structure 350-1, and the second-second bottom layer 350B-V instead of the second-V pair structure 350-V. Except for this arrangement, since the second anti-reflection unit 350 shown in FIG. 16 is the same as the first anti-reflection unit 250A shown in FIG. 10, a description of overlapping portions will be omitted.

According to another embodiment, the second anti-reflection portion 354 may include the second-second to second- (V-1) pair structures 350-2 to 350- (V-1) and the second-to-V burr. The term layer 350B-V may be included. That is, unlike the second anti-reflective unit 350 shown in FIG. 16, the second anti-reflective unit 354 according to another embodiment may not include the second-first top layer 350T-1. For example, the second anti-reflection portion 354 may have a structure 354A as illustrated in FIG. 18 described below.

According to another embodiment, the second anti-reflection portion 354 may include the second-first top layer 350T-1 and the second-second to second- (V-1) pair structures 350-2 to 350- ( V-1)). That is, unlike the second antireflection unit 350 shown in FIG. 16, the second antireflection unit 354 according to another embodiment may not include the second-V bottom layer 350B-V. .

The second anti-reflection portions 354 and 350 having the above-described configuration may increase the sharpness of the touch display apparatus 300 by suppressing the reflection of light incident to the touch display apparatus 300 from the outside as much as possible. Light that is not reflected by the second anti-reflective portion 354 is not reflected again by the members disposed under the second anti-reflective portion 354, for example, the first anti-reflective portion 352. Can be.

In addition, the second anti-reflection portion 354 may have the same characteristics as the first anti-reflection portion 352. For example, the number of pair structures included in the second anti-reflection unit 354 and the number of pair structures included in the first anti-reflection unit 352 may be the same. In addition, the first thickness T21 of the first anti-reflection portion 352 and the second thickness T22 of the second anti-reflection portion 354 may be the same. In addition, the constituent material of the first anti-reflective part 352 and the constituent material of the second anti-reflective part 354 may be identical to each other.

Alternatively, the second anti-reflection portion 354 may have different characteristics from the first anti-reflection portion 352. For example, the number of pair structures included in the second anti-reflection unit 354 may be different from the number of pair structures included in the first anti-reflection unit 352. In addition, the first thickness T21 of the first anti-reflection portion 352 and the second thickness T22 of the second anti-reflection portion 354 may be different from each other. In addition, the material of the first anti-reflection portion 352 and the material of the second anti-reflection portion 354 may be different from each other.

Meanwhile, the finger protector 380 may be disposed on the second antireflective part 354. Since the finger protector 380 performs the same function as the finger protector 280 illustrated in FIG. 9, redundant description thereof will be omitted.

In addition, although not shown, an antiglare layer, which serves to prevent glare, may be further disposed between the substrate 340 and the color unit 360. For example, the antiglare layer may be disposed as a separate layer between the substrate 340 and the color unit 360, but embodiments are not limited thereto. According to another embodiment, the antiglare layer may be implemented by forming a wavy pattern on the substrate 340.

In addition, the touch display device 300 according to the third embodiment may include a specific structure of the display panel 310, a specific structure of the touch panel 320, a specific material of the transparent adhesive part 330, and whether or not the substrate 340 exists. However, the material is not limited to a specific material or a specific material or structure of the first and second anti-reflection parts 352 and 354. That is, the above description is only one example for helping the understanding of the touch display apparatus 300 illustrated in FIG. 15. In other words, at least one of the display panel 310, the touch panel 320, the transparent adhesive part 330, the substrate 340, the first and second anti-reflective parts 352 and 354, and the color part 360. Regardless, if the first anti-reflection portion 352 is disposed under the substrate 340, and the color portion 360 and the second anti-reflection portion 354 can be disposed on the substrate 340 as described above. According to an embodiment, the touch display apparatus 300 may be applied.

Hereinafter, an implementation example 300A of the touch display apparatus 300 according to the third embodiment will be described with reference to the accompanying drawings.

FIG. 18 is a cross-sectional view of an example 300A of the touch display device 300 illustrated in FIG. 15.

The touch display device 300A illustrated in FIG. 18 includes a display panel 310, a transparent adhesive part 330A, a touch panel 320B, a first antireflection part 352A, a glass 340A, and a color part ( 360A) and a second anti-reflection portion 354A.

The display panel 310, the transparent adhesive part 330A, the touch panel 320B, the first antireflection part 352A, the glass 340A, the color part 360A, and the second antireflection part 354A shown in FIG. 18. ) Is shown in FIG. 15, the display panel 310, the transparent adhesive part 330, the touch panel 320, the first antireflection part 352, the substrate 340, the color part 360, and the second antireflection part. 354 corresponds to each embodiment. In addition, the finger protection unit 380 illustrated in FIG. 15 is omitted in the touch display device 300A illustrated in FIG. 18.

Each part illustrated in FIG. 18 will be described in detail with reference to FIG. 3 as follows.

The transparent adhesive portion 330A may be implemented with an OCR and have a refractive index of 1.41.

The high refractive oxide layer 324, the first and second electrode patterns 322, the insulating layer 326, and the pattern cover layer 328 illustrated in FIG. 18 may include the high refractive oxide layer 124, the first and second layers illustrated in FIG. 3. Since they correspond to the two electrode patterns 122: 122-1 and 122-2, the insulating layer 126, and the pattern cover layer 128, overlapping descriptions are omitted.

The refractive index of Al ₂ O ₃ implementing the high refractive oxide layer 324 is 1.57, and the refractive index of ITO implementing the first and second electrode patterns 322: 122-1 and 122-2 is 1.96, and the insulating layer ( The refractive index of SiO ₂ implementing 326 may be 1.47, and the refractive index of Nb ₂ O ₅ implementing the pattern cover layer 328 may be 2.25.

Further, the first top layer 352T-1, the first top layer 352T-1 of the first antireflection portion 352A, and the first top layer 352T-2 of the first-2nd and 1-3 pair structure 352-2 and 352-3, respectively. The refractive index of SiO ₂ implementing 352T-3) is 1.45, and the first bottom layers 352B-2 and 352B-3 of the first-second and first-three pair structures 352-2 and 352-3, respectively. The refractive index of TiO ₂ that implements may be 2.18. For example, the total thickness of the first anti-reflection portion 352A may be 3000 μs, but the embodiment is not limited thereto.

In addition, the substrate 340A may be implemented with glass.

In addition, the color portion 360A may include an adhesive layer 362, a black dye layer 364A, a PET film 366A, and a hard coating layer 368. Here, the black dye layer 364A and the PET film 366A correspond to the embodiments of the color dye layer 364 and the support layer 366 shown in FIG. 17, respectively.

In addition, the second top layer 354T- of the second-first top layer 354T-1 of the second anti-reflection portion 354A and the second-second and second-three pair structures 354-2 and 354-3, respectively. 2, the refractive index of SiO ₂ to implement the 354T-3) is 1.45, and the 2-2 and 2-3 pairs structure (354-2 and 354-3), each second member teomcheung (354B-2, 354B- The refractive index of TiO ₂ implementing 3) may be 2.18. For example, the total thickness of the second anti-reflection portion 354A may be 3000 μs, but the embodiment is not limited thereto.

19A illustrates a local cross-sectional view of the touch display device according to the third comparative example, and FIG. 19B illustrates a local cross-sectional view of the touch display device according to the third embodiment.

19A and 19B, the substrate 340 and the first anti-reflective part 352 perform the same functions as the substrate 340 and the first anti-reflective part 352 shown in FIG. 15, respectively.

In the case of the touch display device according to the third comparative example illustrated in FIG. 19A, the first anti-reflection portion 352 is disposed on the substrate 340, while in the case of the touch display device according to the third embodiment illustrated in FIG. 19B. The first anti-reflection portion 352 is disposed under the substrate 340. Except for this, the touch display device according to the third comparative example is the same as the touch display device according to the third embodiment.

In the case of the structure illustrated in FIG. 19A, the first reflectance R1 of the light incident and reflected on the substrate 340 is very high. This is because the substrate 340 is implemented with ITO or the like having a high refractive index of 0.9. On the other hand, in the structure shown in FIG. 19B, the second reflectance R2 of the light incident on the substrate 340 and reflected by the first anti-reflective part 352 is smaller than the first reflectance R1. This is because the refractive index of the first anti-reflection portion 352 is smaller than the refractive index of the substrate 340. For example, the first reflectance R1 of the third comparative example without the first and second antireflection parts 352 and 354 and the color part 360 may be 2.42%. On the other hand, the second reflectance R2 of the touch display device 300A according to the third embodiment implemented as illustrated in FIG. 18 may be 0.83%. As such, when the first anti-reflection portion 352 is disposed below the substrate 340, the reflectance may decrease.

As a result, when the first anti-reflection portion 352 is disposed on the substrate 340 or when the first anti-reflection portion 352 is omitted, as in the third comparative example, the field of view caused by the external light is disturbed due to the high reflectance. There is a problem that the visibility of the touch display device is lowered. On the other hand, when the first anti-reflection portion 352 is disposed under the substrate 340 as in the third embodiment, the overall reflectance of the touch display device 300: 300A may be lowered, thereby obstructing the view by external light. By minimizing the visibility can be improved. In addition, in the touch display device 300 (300A) according to the third embodiment, the color parts 360: 360A are disposed to increase the light absorption to further lower the reflectance, and to reflect the second light on the color parts 360: 360A. By disposing the preventive parts 354: 354A to further lower the reflectance, the visibility can be further improved.

In general, the reflected luminance may be expressed as Equation 2 below, and the ambient contrast ratio (ACR) may be expressed as shown in Equation 3 below.

Here, the display white luminance refers to the luminance measured when the desktop of the touch display apparatus 300 is white, and the display black luminance refers to the luminance measured when the desktop of the touch display apparatus 300 is black. Indicates. In addition, the white reflection luminance indicates the reflection luminance measured when the desktop of the touch display apparatus 300 is white, and the black reflection luminance indicates the reflection measured when the desktop of the touch display apparatus 300 is black. Indicate luminance.

For example, the touch display device according to the third comparative example does not include the first and second anti-reflective parts 352 and 354 and the color part 360, and the touch display device 300 according to the third embodiment. When implemented as illustrated in FIG. 18, the peripheral illuminance ratio ACR may be increased to improve visibility. For example, when the external light illumination is 20,000 Lux in Equation 2, the ACR of the touch display device of Comparative Example 3 is 5.8: 1, whereas the touch display device 300A according to the embodiment illustrated in FIG. 18 is used. The ACR of 14.5: 1 is larger than the comparative example. As such, since the ACR of the touch display device according to the third embodiment is larger than that of the comparative example, visibility may be further improved.

In addition, the touch display apparatuses 100, 100A, 200, 200A, 300, and 300A according to the above-described embodiments may be used for various electronic displays such as a mobile phone, a portable small computer, a portable game machine, a handy terminal, a PDA, a portable audio player, a laptop, or a navigation device. It can be applied to the product to provide high outdoor visibility.

Hereinafter, a vehicle display unit according to an embodiment including the aforementioned touch display apparatuses 100, 100A, 200, 200A, 300, and 300A will be described with reference to the accompanying drawings.

20 is a diagram illustrating an exterior of a vehicle display unit according to an embodiment including a touch display device.

Referring to FIG. 20, the vehicle display unit according to the embodiment may include the touch display apparatus 100, 100A, 200, 200A, 300, or 300A according to the above-described embodiment. For example, a vehicle display unit according to an embodiment may include a center interface display (CID) 1200 attached to a head unit of a vehicle and a display 1300 for rear seat entertainment (RSE). Or it may include at least one of the cluster (or driver seat instrument panel) 1400. Here, each of the CID 1200, the RSE display 1300, and the cluster 1400 may include the touch display devices 100, 100A, 200, 200A, 300, and 300A according to the above-described embodiments.

21 is a schematic block diagram of a vehicle display unit 1000 according to an embodiment.

The vehicle display unit 1000 illustrated in FIG. 21 may include a CID 1200, a vehicle reproducing apparatus 1500, and a cable 1600.

The CID 1200 corresponds to the CID 1200 illustrated in FIG. 20 and may be electrically connected to the vehicle reproducing apparatus 1500 by a cable 1600.

The CID 1200 may include a touch display device 1100 and an operation button 1210.

The vehicle reproducing apparatus 1500 is a device capable of reproducing video and audio signals, such as a DVD player, and may include an operation button 1510 and a recording medium inlet 1520.

The CID 1200 transmits a control signal for controlling the vehicle reproducing apparatus 1500 to the vehicle reproducing apparatus 1500 through the cable 1600, and the vehicle reproducing apparatus 1500 reproduces the video and audio signals by reproducing the recording medium. May be transmitted to the CID 1200 through the cable 1600. The CID 1200 may provide a user with driving information and may perform a monitor function of reproducing the video and audio signals transmitted from the vehicle reproducing apparatus 1500.

The CID 1200 may include the touch display device 1100 and optionally further include an operation button 1210. That is, a user's control command for controlling the CID 1200 or a user's control command for controlling the vehicle playback apparatus 1500 may be provided by operating at least one of the touch display device 1100 or the operation button 1210. Can be.

FIG. 22 is a block diagram of an embodiment 1200A of the CID 1200 illustrated in FIG. 21.

The CID 1200A according to the embodiment illustrated in FIG. 22 may include a touch display device 1100, a storage unit 1220, a controller 1230, an interface 1240, an audio processor 1250, a speaker 1260, and a GPS unit. 1270 and a key input unit 1280 may be included.

Referring to FIG. 22, the CID 1200A may receive a user's control command through the key input unit 1280 connected to the touch display device 1100 or the operation button 1210.

The touch display apparatus 1100 illustrated in FIGS. 21 and 22 may correspond to the touch display apparatuses 100, 100A, 200, 200A, 300, and 300A described above.

The storage unit 1220 may store map data and graphic data so as to implement a navigation function, and store a control code for controlling the vehicle reproducing apparatus 1500. For example, the storage unit 1220 may be in the form of at least one of a flash memory, an SDRAM, or a hard disk, but embodiments are not limited thereto.

The control code for controlling the vehicle reproducing apparatus 1500 may mean a code for identifying each manufacturer so as to control the vehicle reproducing apparatus 1500 manufactured by a plurality of manufacturers. For example, if all control codes used by various companies are stored, and the user provides a start command for reproducing the vehicle playback apparatus 1500, the controller 1230 is used by various companies stored in the storage unit 1220. All control codes are transmitted to the vehicle reproducing apparatus 1500 through the interface 1240. In this case, the vehicle reproducing apparatus 1500 manufactured by one company does not operate when a control code used by another company is input, and may operate only when a control code used by its own company is input.

In addition, the GPS unit 1270 may receive positioning information such as latitude, longitude, and altitude from the satellite. The audio processor 1250 processes the voice signal to transmit the voice signal to the speaker 1260. The speaker 1260 may be an external speaker connected to the CID 1200A.

In addition, the display panels 110, 210, and 310 of the touch display apparatus 1100 may display map information and location information so as to implement a navigation function, and reproduce an image signal input from the vehicle reproducing apparatus 1500.

In addition, the interface 1240 may be connected to the vehicle reproducing apparatus 1500 to transmit a control code for controlling the vehicle reproducing apparatus 1500 and receive video and audio signals transmitted from the vehicle reproducing apparatus 1500.

In addition, the controller 1230 controls all parts including the touch display device 1100 to perform a navigation function, and reproduces the video and audio signals received from the vehicle playback device 1500.

20 to 22 are merely examples to help understand the vehicle display unit according to the embodiment, but the embodiment is not limited thereto.

The vehicle display unit including the touch display apparatuses 100: 100A, 200: 200A, and 300: 300A according to the embodiment may provide high outdoor visibility.

Although the above description has been made with reference to the embodiments, these are merely examples and are not intended to limit the present invention. Those skilled in the art to which the present invention pertains are not illustrated above without departing from the essential characteristics of the present embodiments. It will be appreciated that many variations and applications are possible. For example, each component specifically shown in the embodiment can be modified. And differences relating to such modifications and applications will have to be construed as being included in the scope of the invention defined in the appended claims.

Embodiments for carrying out the invention have been described fully in the foregoing "Best Modes for Carrying Out the Invention".

The touch display device according to the embodiment may be used in various electronic display products such as a mobile phone, a portable small computer, a portable game machine, a handy terminal, a PDA, a portable audio player, a notebook, or a navigation device.

Claims (10)

1. Display panel;

   A touch panel disposed on the display panel to sense a touch; And

   And a translucent adhesive part disposed between the display panel and the touch panel and including the plurality of translucent adhesive layers having different refractive indices.
2. The touch display device of claim 1, wherein each of the plurality of light-transmissive adhesive layers comprises a silicon-based or acrylic-based material.
3. The touch display device of claim 1, wherein each of the plurality of light-transmissive adhesive layers comprises at least one of an optical transparent resin (OCR), an optical transparent adhesive (OCA), or a liquid optical transparent adhesive (LOCA).
4. The method of claim 1, wherein the touch display device

   A substrate disposed on the touch panel; And a function plate disposed on the substrate,

   The function plate

   An antiglare unit disposed on the substrate;

   An anti-reflection portion disposed on the anti-glare portion; or

   And at least one of an anti-finger portion disposed on the anti-reflection portion.
5. A display panel for providing an image;

   A touch panel disposed on the display panel to sense a touch;

   A first anti-reflection portion disposed on the touch panel;

   A second anti-reflection portion disposed on the first anti-reflection portion; And

   And a color part disposed between the first anti-reflective part and the second anti-reflective part.
6. The touch display device of claim 5, wherein the color part has a thickness of about 10 μm to about 300 μm.
7. The display device of claim 5, wherein the touch display device further comprises a finger protection part disposed on the second reflection prevention part.

   The color unit includes at least one of transparent PI film, PEN film, PET film, PC film, COP film, TAC film, or PSS film,

   The color portion is a hard coated film,

   The color unit is formed to have a black color, and includes a light isotropic film.
8. The method of claim 7, wherein the color unit

   A plasma surface treated support layer;

   A color dye layer disposed between the support layer and the substrate and formed to have a black color; And

   And an adhesive layer disposed between the color dye layer and the substrate.
9. The method of claim 8, wherein the color portion further comprises a hard coating layer disposed between the support layer and the second anti-reflection portion,

   The support layer comprises at least one of a transparent PI film, PEN film, PET film, PC film, COP film, TAC film, or PSS film,

   The visible light transmittance of the color dye layer is 35% to 70% touch display device.
10. The method of claim 5, wherein the first or second anti-reflection portion

    At least one bottom layer; And

    At least one top layer disposed on the at least one bottom layer,

    The refractive index of the bottom layer is greater than the refractive index of the top layer.

Images