TWI475280B - Touch panel integrated display device - Google Patents

Description

Touch panel integrated display device

The present invention relates to a touch panel integrated display device capable of reducing a total thickness and weight and preventing deterioration of display quality.

With the real beginning of an information age, the field of display of electrical information signals has been thoroughly developed. Different flat display devices with compact size, light weight, and low power consumption have been developed and replaced with conventional cathode ray tubes (CRTs).

Such a flat display device comprises a liquid crystal display device (LCD), a plasma display panel (PDP) device, a field emission display (FED) device, and an electroluminescence display device (Electro Luminescence). Display, ELD) and an Electro-Wetting Display (EWD). The flat display device must have a display panel for displaying images, a pair of insulating substrates facing each other, and a layer of luminescent material or a layer of polarized material between the two insulating substrates.

The liquid crystal display device is a device capable of displaying an image by using a light transmittance of a liquid crystal that can be adjusted according to an electric field. This liquid crystal display device has the advantages of a small size, a thin profile, and low power consumption. Thus, these liquid crystal display devices are widely used in notebook type electric energy, office automatic devices, and audio/video devices.

Typically, personal computers, portable communication devices, and other personal information processing devices form an interface with a user via an input device having a keyboard, mouse, digitizer, and the like. Recently, with the recent expansion of mobile communication devices, it has been difficult to improve the integrity of a product for an input device such as a keyboard and a mouse. Thus, an input device having a high portability that can be used more easily has been continuously developed, and a touch that allows input of information by direct touch of a screen by using his or her finger or pen has been proposed. Panel.

If an auxiliary letter input device is not provided, the touch panel allows the letters to be simply input with little trouble, and it is easy to carry and the user easily recognizes the user guide. Due to these advantages, these touch panels have recently been applied to different information processing devices. In particular, when the user selects an icon or a keyboard displayed on the screen, a corresponding icon or keyboard provided in the touch panel can be selected to input information. In order to achieve this, a flat display device having such a touch panel is often applied to a portable information processing device such as a personal computer and a mobile phone. A touch panel add-on type liquid crystal display device is proposed as one of flat display devices having a touch panel, and one of the liquid crystal panels is attached with a touch panel.

"FIG. 1" is a schematic diagram of a touch panel add-on type liquid crystal display device of the prior art.

As shown in FIG. 1, the touch panel add-on type liquid crystal display device of the prior art includes a liquid crystal panel 10 that adjusts the transmittance of each pixel to display an image by using one direction of the liquid crystal cell. A touch panel 20 is configured to sense a touch and an adhesive layer 30 for bonding the liquid crystal panel 10 to the touch panel 20 .

The liquid crystal panel 10 includes a pair of substrates facing each other, a liquid crystal layer interposed therebetween, and an array of transistors provided on any one of the two substrates for defining a pixel region corresponding to each pixel. And to control the brightness of each pixel, and a color filter array, which is provided on each substrate for respectively transmitting different colored lights corresponding to pixels. The first and second polarization layers 11 and 12 are formed on the top and bottom surfaces of the liquid crystal panel 10, respectively. The first polarizing layer 11 polarizes light incident on one of the liquid crystal panels 10, and the second polarizing layer 12 polarizes light emitted from the liquid crystal panel 10.

The touch panel 20 includes a transparent substrate 21 serving as a waveguide to allow light to be transmitted with less loss. The light source 22 adjacent to the transparent substrate 21 is used to project light into the transparent substrate 21, a reflector. 23, adjacent to the transparent substrate 21 and opposite to the light source 22, for reflecting light passing through the inside of the transparent substrate 21 and providing light traveling in a straight line parallel to the top surface of the transparent substrate 21, and a sensor 24, It is formed on a peripheral region of the top surface of the transparent substrate 21 opposite to the reflective plate 23 for collecting light passing along the top surface of the transparent substrate 21. The touch panel 20 is reflected by using a light passing along a top surface of the transparent substrate 21 through a touch generated in a predetermined area of the transparent substrate 21 to detect coordinates corresponding to the sensor 24 not receiving light, only Used to detect the coordinates of a touch point.

According to the prior art, the light emitted from the light source 22 can reach the sensor 24 only by the process of internal transfer of the transparent substrate, the process of reflection through the reflective plate, and the process of linear movement on the top surface of the transparent substrate 21. That is, a substantial percentage of the radiant intensity of light emitted from source 22 can be reduced by the long ray path to sensor 24. Thus, the light collected in the sensor 24 having a relatively small amount of radiation intensity may only have a high probability of failure that is effectively identified by a control unit (not shown). As a result, there is a limit to improving the touch sensing sensitivity of the touch panel.

Further, according to the touch panel add-on type liquid crystal display device of the prior art, the liquid crystal panel 10 having a pair of substrates and the touch panel 20 having the auxiliary transparent substrate 21 are independently provided. Thereafter, the touch panel 20 is adhered to the liquid crystal panel 10 through the adhesive layer 30. The pair of substrates of the liquid crystal panel 10 are separately provided from the transparent substrate 21 of the touch panel 20. Therefore, there is a limit to reducing the overall weight and thickness of the touch panel integrated type liquid crystal display device of the prior art. In addition, a direct bonding process of the liquid crystal panel 10 and the touch panel 20 must be performed, whereby a manufacturing process can be complicated and it is difficult to increase the yield.

Further, the light emitted from the liquid crystal panel 10 for displaying an image (hereinafter, the display light ray) must be emitted to the outside through the adhesive layer 30 and the touch panel 20. Thereby, the light transmittance of the display light is lowered, and thus the image quality of the liquid crystal panel 10 can be disadvantageously deteriorated.

Therefore, in view of the above problems, the present invention relates to a touch panel integrated display device. One of the objects of the present invention is to provide a touch panel integrated display device capable of reducing a total weight and thickness thereof, and even using a touch panel and a display panel, compared to the prior art. The touch panel and the liquid crystal panel can improve the image quality of one of the display panels and the touch sensing sensitivity of the display panel.

Other advantages, objects, and features of the invention will be set forth in part in the description which follows, It is understood or can be derived from the practice of the invention. The objectives and other advantages of the invention will be realized and attained by the <RTI

In order to obtain these and other features of the present invention, the present invention is embodied and described in detail. A touch panel integrated display device includes a display panel including a plurality of pixels for displaying an image. A touch panel is formed on a top peripheral area of one of the display panels for sensing a touch generated on the display panel. The touch panel includes a plurality of light sources including at least one light source arranged at each edge of a top peripheral region of the display panel for emitting light toward a top surface of the display panel; a plurality of sensors arranged Each edge of the top peripheral region of the display panel is spaced apart from each other by an equal distance for collecting light passing through the top surface of the display panel after being emitted from the light sources; a waveguide member including a plurality of cores a body and a cladding, the core is connected to the sensor, the cladding is formed to surround the core, the cladding has a refractive index lower than that of the core; and a sensor controller The core is connected to the sensor to sense whether each sensor senses the collected light for calculating one coordinate of the touch.

Therefore, the touch panel integrated display device according to the present invention includes a touch panel formed on a peripheral area of the top surface of the display panel. Because of this, an auxiliary support substrate can be omitted from the touch panel. As a result, the total thickness and weight of the touch panel integrated display device can be reduced, and thus the portability can be improved.

Moreover, according to the prior art, the touch panel and the display panel are attached together through the adhesive layer therebetween, so that the light emitted from the display panel is reflected or lost through the adhesive layer or the support substrate of the touch panel. As a result, the quality of an image can be degraded. In contrast, the touch panel integrated display device according to the present invention includes a touch panel directly formed on the display panel, does not have an auxiliary support substrate for the touch panel, and thus is emitted from the display panel. The light can be directly emitted to the outside without passing through the adhesive layer and the support substrate of the touch panel. As a result, image quality can be improved. In addition, the support substrate and the adhesive layer of the touch panel can be omitted. As a result, the structure of the touch panel integrated display device can simplify and easily perform the manufacturing process. As a result, a yield can be increased.

Further, according to the present invention, the light emitted from the light source is directly collected through the sensor after passing through the top surface of the display panel. Because of this, compared with the prior art, the less radiation intensity generated by the light path can be reduced and the touch sensing sensitivity of the touch panel can be improved.

It is to be understood that the foregoing general description of the invention and the claims

Hereinafter, specific embodiments of the present invention will be described in detail in conjunction with the drawings. The same reference numbers are used throughout the drawings to refer to the same or equivalent parts.

Hereinafter, a touch panel integrated display device according to an embodiment of the present invention will be described in detail with reference to the drawings.

FIG. 2 is a cross-sectional view showing a touch panel integrated display device according to a first embodiment of the present invention. The "Fig. 3" is a perspective view of a twisted nematic (TN) type liquid crystal panel which is one of the touch panel integrated type display devices of the first embodiment of the present invention. FIG. 4 is a perspective view of a planar switching type liquid crystal panel which is one of the touch panel integrated display devices of the first embodiment of the present invention. FIG. 5 is a partial perspective view of a touch panel of the touch panel integrated display device according to the first embodiment of the present invention. "Picture 6a" is a cross-sectional view of the Y-direction of a first substrate, a second polarization layer and a touch panel corresponding to the I-I' line shown in "Fig. 5", and "6b" The figure is a cross-sectional view in the XZ direction of the first substrate, the second polarizing layer, and a waveguide corresponding to the II-II' line shown in Fig. 5. Figure 7a is a schematic diagram showing the arrangement of light sources and sensors provided in the touch panel shown in Figure 5, and "7b" to "7e" are light sources and sensing Schematic representation of other examples of the arrangement of the devices. "8a" and "8b" are plan views of the waveguide shown in the "figure 5" in the XY direction.

As shown in FIG. 2, the touch panel integrated display device of the embodiment of the present invention includes a liquid crystal panel 100 for displaying images, and a backlight unit 200 arranged in the bottom surface of the liquid crystal panel 100. The light is transmitted toward the liquid crystal panel 100, and a touch panel 300 is arranged on the top peripheral area of the liquid crystal panel 100 for detecting the touch generated on the top surface of the liquid crystal panel 100. According to the touch-sensitive integrated display device shown in FIG. 2, the liquid crystal panel 100 can pass through other devices such as a field emission display panel, an electroluminescence display panel, an electrowetting display panel, and an organic electro-optical display panel. Replacement of a light-emitting display panel or the like. However, for convenience, the following will be embodied as a display panel of a liquid crystal panel.

If the liquid crystal panel 100 is of a transmissive or transflective type, the touch panel integrated display device must include a backlight unit 200. In contrast, if the liquid crystal panel 100 is of a reflective type, the backlight unit 200 may not be provided. Further, if the touch panel integrated display device includes a display panel that emits light by itself, the device may not include the backlight unit 200.

The touch panel 300 according to the present invention is directly formed on one of the first substrates 121 of the liquid crystal panel 100 which will be described later in detail. Thus, the touch panel 300 may not include an auxiliary support substrate, however, for convenience, it is referred to as a 〞 panel 本 in the present specification. Here, the first substrate 121 is one of a pair of substrates that are provided facing each other in the display panel, and includes a surface that forms a touch area and emits light of the display panel.

The liquid crystal panel 100 shown in FIG. 2 includes a film array substrate 110 (hereinafter, 〞TFT substrate 〞) and a color filter array substrate 120 (hereinafter, 〞CF substrate 〞) which must face each other. And a liquid crystal layer 130 implanted between the TFT substrate 110 and the CF substrate 120, a first polarization layer 140 formed on a rear surface of the TFT substrate 110 for polarization from a backlight unit 200 The light above the liquid crystal layer 130 and a second polarizing layer 141 are formed on the top surface of the CF substrate 120 for polarizing light emitted from the liquid crystal layer 130 to the outside. Here, the CF substrate 120 includes a first substrate 121 formed of a material having transparency and insulation. A color filter array unit 122 is formed on a rear surface of one of the first substrates 121, and a touch panel 300 is formed on a top surface of the first substrate 121.

The liquid crystal panel 100 can be classified into a twisted nematic (TN) type and a planar switching type according to the direction of an electric field for adjusting the direction of the liquid crystal cell in the liquid crystal layer 130.

As shown in FIG. 3, according to the twisted nematic (TN) type liquid crystal panel, a TFT substrate 110a includes a second substrate 111 opposed to the first substrate 121, and intersects with each other on the second substrate 111. The plurality of gate lines 112 and the plurality of data lines 113 are used to define a plurality of pixel regions (P) corresponding to the plurality of pixels, and the plurality of pixels are respectively formed between the gate lines 112 and the data lines 113. A thin film transistor (T), and a plurality of pixel electrodes 114 corresponding to the pixel regions (P), respectively, are connected to the thin film transistors (T).

According to the twisted nematic (TN) type liquid crystal panel, a CF substrate 120a includes a first substrate 121 and a color filter array unit 122 formed on the rear surface of the first substrate 121. The color filter array unit 122 includes a black matrix layer 1220 formed in an outer region of one of the pixel regions (P) on the back surface of one of the first substrates 121 for preventing the outer region of the pixel region. Light leakage, a color filter layer 1221 formed on the pixel region (P) on the surface behind the first substrate 121, partially overlapping the black matrix layer 1220, for respectively transmitting through the corresponding corresponding to each A predetermined color of a pixel, a coating layer 1222 formed on a horizontal surface of the color filter layer 1221, and a common electrode 1223 formed over the coating layer 1222, corresponding to all pixels. Here, the color filter layer 1221 may be formed to have light rays of wavelength ranges of red, green, and blue corresponding to the respective pixel regions (P), respectively.

According to the twisted nematic (TN) type liquid crystal panel having the above structure, the direction of the liquid crystal cell provided in the liquid crystal layer 130 is reversed by 90 degrees from the direction of the liquid crystal cell provided in the liquid crystal layer 130, and can be supplied to A common voltage and a pixel voltage of the common electrode 1223 and the pixel electrode 114 arranged above or below the liquid crystal layer 130 are controlled according to an electric field supplied to the liquid crystal layer 130. Thereby, the light transmittance of each pixel area (P) is adjusted and the brightness of each pixel is controlled to display an image.

Meanwhile, as shown in FIG. 4, according to the planar switching type liquid crystal panel, a TFT substrate 110b includes a second substrate 111, a plurality of gate lines 112 and a plurality of materials crossing each other on the second substrate 110b. a line 113 for defining a plurality of pixel regions (P) respectively corresponding to the plurality of pixels, and a plurality of thin film transistors (T) respectively formed at intersections between the gate lines 112 and the data lines 113 a plurality of pixel electrodes 114 respectively formed in the pixel region (P) and respectively connected to the thin film transistors (T), and a plurality of common electrodes 115 formed in the pixel regions (P) Among them, and alternately arranged with these pixel electrodes.

According to the planar switching type liquid crystal panel, a CF substrate 120a includes a first substrate 121 and a color filter array unit 122 formed on the rear surface of the first substrate 121. The color filter array unit 122 includes a black matrix layer 1220 formed on the outside of the pixel region (P) on the rear surface of one of the first substrates 121 to prevent light in the outer region of the pixel region. Leaking, a color filter layer 1221 formed in each pixel region and partially overlapping the black matrix layer 1220 for transmitting the pixel region (P) through the pixel region (P) Corresponding to a predetermined color of light, and a coating layer 1222 formed on the horizontal surface of the color filter layer 1221. In other words, unlike the twisted nematic (TN) type, the CF substrate 120b of the planar switching type liquid crystal panel may not include the common electrode. The color filter layer 1221 may be formed to emit a visible light having a predetermined wavelength range corresponding to one of red, green, and blue of the pixel regions (P), respectively.

The plane switching type liquid crystal panel supplies a common voltage and a pixel voltage to each of the common electrodes 115 and each of the pixel electrodes 114 arranged in the same plane. Thereafter, the plane switching type liquid crystal panel adjusts the liquid crystal crystal contained in the liquid crystal layer 130 from the state of the liquid crystal cell provided in the liquid crystal layer 130 arranged in parallel with an alignment layer (not shown) according to a horizontal electric field. The direction of the cell, as well as the transmittance of each pixel region (P). Thereby, the brightness of each pixel is controlled to display an image.

In other words, the twisted nematic (TN) type liquid crystal panel adjusts the light transmittance of each pixel region (P) by using a vertical electric field acting on the liquid crystal layer 130. In contrast, the plane switching type liquid crystal panel adjusts the light transmittance of each pixel region (P) by using a horizontal electric field (plane switching) generated in the liquid crystal layer 130.

As described above, the first substrate 121 is formed of a material having transparency and insulation such as glass, propylene or the like. Since the first substrate 121 is formed to have transmissivity and insulation, the liquid crystal panel 100 can be stably conducted and light emitted from the liquid crystal layer 130 can be transmitted with little loss. Thereby, the image quality of one of the liquid crystal panels can be improved.

At the same time, the touch panel 300 is arranged above the top peripheral area of the liquid crystal panel 100. That is, as shown in FIG. 2, if the second polarization layer 141 is provided on the top of the liquid crystal panel 100, the touch panel 300 is formed on the edge region of the top surface of the second polarization layer 141. Alternatively, if the liquid crystal panel 100 does not include the second polarization layer 141, the touch panel 300 is formed on an edge region of a top surface of the first substrate 121. That is, the touch panel 300 is supported by the first substrate 121.

The touch panel 300 includes a plurality of light sources 310 including at least one light source 310 arranged at each edge of the top peripheral region of the liquid crystal panel 100 for emitting light toward the top surface of the liquid crystal panel 100. The sensors 320 are arranged at the edges of the top peripheral region of the liquid crystal panel 100 at equal distances from each other for collecting light from the light source 310 through the top of the liquid crystal panel 100, a flexible printed circuit board (lower) Herein, referred to as 〞FPC〞) 330, which is coupled to the light source 310 and the sensor 320 for providing a driving voltage and for supporting the light source 310 and the sensor 320, and a waveguide member 340 for the waveguide member 340 The sensors 320 are connected to a sensor controller (not shown, refer to reference numeral 〞350〞 in FIG. 5) for guiding the light input to the sensor 320 to the sensing. Controller (not shown). At the same time, the sensor controller senses whether each sensor collects light and calculates a touch coordinate through the corresponding coordinates of the combined sensor 320 that does not collect light.

As shown in FIG. 5, the waveguide member 340 is positioned around the top peripheral region of the liquid crystal panel (shown as "Fig. 2", 100) and the flexible printed circuit board (FPC) 330 is along one of the waveguide members 340. The inner surface is attached. At least one sensor controller 350 is positioned over a top peripheral region of the liquid crystal panel 100.

These light sources 310 may be fixed to a surface of the flexible printed circuit board (FPC) 330 that is not in contact with the waveguide 340, and the light source 320 faces the top of the liquid crystal panel 100. The light emitted from one of the light sources 310 is not transmitted through all of the sensors 320, but is collected as effective light only through the sensors 320 positioned in the effective area of the radiation intensity corresponding to one of the light sources 310.

In other words, the top of the liquid crystal panel 100 is divided into a plurality of radiation intensity effective regions respectively corresponding to the light sources 310. These positions, heights, and light emission directions of the light source are used, and these radiation intensity effective areas are set so as not to overlap each other. After being emitted from one of the light sources 310, the light collected by the sensors 320 arranged in the effective area of the radiation intensity corresponding to one of the light sources has a radiation intensity that can be effectively sensed by the sensor controller 350. This feature will be described later.

These sensors 320 are oriented toward the top of the liquid crystal panel 100 and are fixed to the surface of the flexible printed circuit board (FPC) 330, similar to the light source 310, and the sensors 320 are equidistant from each other at each edge of the top of the liquid crystal panel 100. Interval.

As shown in FIG. 6a and FIG. 6b, the waveguide member 340 includes a plurality of cores 341 respectively connected to the sensors 320, and the cladding 342 surrounding the core 341 has a phase 342. The refractive index lower than the refractive index of the core 341 is compared with a buffer layer 343 formed between the core 341 and the liquid crystal panel 100. At the same time, the height of the buffer layer 343 is adjusted so that the cores 341 can be arranged as high as the height of the sensors 320 arranged in the flexible printed circuit board (FPC) 330.

A flexible printed circuit board (FPC) 330 in which the sensor 320 is arranged is attached to the waveguide 340 after the core 341 and the sensor are aligned with each other.

Meanwhile, "7a" and "7e" indicate one of the light source 310 and the sensor 320 arranged on the flexible printed circuit board (FPC) 330 with respect to one edge of the top peripheral area of the liquid crystal panel 100. Example.

That is, as shown in "Fig. 5" and "Fig. 7a", the light source 310 may be arranged in parallel along the 〞X〞 direction on top of one of the surfaces of one of the flexible printed circuit boards (FPC) 330. . The sensor 320 may be spaced apart from each other by an equal distance among a bottom region of the surface of the flexible printed circuit board (FPC) under the light source 310 to form a single row along the 〞X〞 direction (here, the limp The lanthanum is a horizontal line along the 〞XZ〞 plane).

Alternatively, as shown in "Fig. 7b", the light source 310 is exchanged opposite to the position of the sensor 320 such that the light source 310 can be arranged in parallel along the 〞X〞 direction on the surface of the flexible printed circuit board (FPC) 330. In the bottom region, and the sensors 320 may be arranged in the top region of the surface of the flexible printed circuit board (FPC) 330, spaced apart from each other by the same distance, forming two rows along the 〞X〞 direction.

In addition, although not shown, the sensors 320 arranged in the top region of the surface of the flexible printed circuit board (FPC) 330 may be arranged in a single row along the 〞X〞 direction, as shown in FIG. 7a. Not two lines. In addition, at least two sensor controllers 350 are provided in different portions of the top peripheral region of the liquid crystal panel 100. The sensor 320 arranged in each edge is classified into two opposite sides, and is respectively connected to different sensor controllers 350 (hereinafter, referred to as a 〞 classification structure 〞). Thereby, an increase in the width of the waveguide member 340 generated by a larger number of cores 341 connected to the sensor controller 350 can be minimized.

When the sensors 320 are arranged in a plurality of rows, the number of the sensors 320 can be increased, and thus the touch sensing sensitivity corresponding to a unit area of a touch area can be increased. At the same time, the cross-sectional area of the core 341 provided in the waveguide member 340 can be reduced, and the core 341 can be arranged in a multi-layered structure. Thereby, the frame width (or width 〞) of the waveguide 340 can be reduced. Moreover, the frame width of the waveguide member 340 can be reduced in the classification structure in which the sensors arranged in the edges (the surface of the top peripheral region) are classified into two opposite side sensors and classified. The sensors are connected to different sensor controllers 350, respectively.

Alternatively, as shown in "Fig. 7c", the light source 310 may be arranged in parallel along the 〞X〞 direction in the top region of the surface of the flexible printed circuit board (FPC) 330, and the sensor 320 may be along The 〞X〞 direction is arranged in a zigzag pattern in two rows in the bottom region of the surface of the flexible printed circuit board (FPC) 330, and is spaced apart from each other by an equal distance. According to "Fig. 7b", the sensor can be arranged in two rows along the 〞X〞 direction having the same 〞Z〞 direction line (here, the 〞 line is one of the XZ planes). In other words, unlike the matrix arrangement shown in "Fig. 7b", the sensor 320 can be arranged in two X-directional rows, alternating in a Z-direction line. That is, one of the top X directions of the two rows, that is, the sensors arranged in the first row can be arranged in the even Z direction line, and one in the bottom X direction of the two rows, that is, arranged in the second row. The sensors 320 can be arranged on odd Z direction lines. When the sensors 320 are arranged in a zigzag shape, the touch sensing sensitivity of the unit area of the touch area can be maintained without increasing the cross-sectional area of the core 341 or the number of the sensors 320. Because of this, the manufacturing cost of the display device can be reduced and the reduced number of sensors 320 can facilitate the control of touch sensing.

Alternatively, as shown in "Fig. 7d" and "Fig. 7e", the sensor 320 may be selected to have a circular cross section instead of a rectangular cross section. The sensor 320 shown in "Fig. 7d" is identical to the sensor 320 shown in "Fig. 7b" except for a circular XZ profile, and thus the repetition of the sensor 320 will be omitted. description.

The sensor 320 shown in "Fig. 7e" is identical to the sensor 320 shown in "Fig. 7c" except for a circular XZ section thereof, and thus the repetition of the sensor 320 will be omitted. description.

Meanwhile, "Fig. 7a" and "Fig. 7b" show an example of a core 341 which is arranged corresponding to the sensor 320.

In other words, as shown in "Fig. 7a", the cores 341 may be parallel along the XY plane, spaced apart from each other by an equal distance, and arranged without interference with each other. Alternatively, as shown in FIG. 7b, the cores 341 may partially overlap each other along the XY plane to reduce the width of the bezel of the waveguide 340 to reduce the width of the bezel of the waveguide 340 and they are mutually along the Z direction. Do not interfere with each other and are equally spaced apart from each other. Although not shown, at least one core 341 is classified into a plurality of groups, and the groups may partially overlap each other along the XY plane, spaced apart from the Z direction for adjusting the width and height of the bezel of the waveguide member 340 to The appropriate level.

The touch panel of the first and second embodiments of the present invention will be described in detail below with reference to "9th through" to "12th". "Figure 9" and "12th picture" are plan views. In order to prevent the components shown in "Figure 9" and "Figure 12" from being confused with each other, the components shown in "Figure 9" and "Figure 12" can be used in accordance with "Figure 2" to "8b". The components shown in the figure are not identical in pattern representation.

FIG. 9 is a plan view of a touch panel of the touch panel integrated display device according to the first embodiment of the present invention. "Fig. 10a" is a schematic view showing the effective area of the radiation intensity of the light source arranged at the top and bottom edges of the top of the display panel shown in the plan view of Fig. 9. "Fig. 10b" is a schematic view showing the effective area of the radiation intensity of the light source arranged at the right and left edges of the top of the display panel shown in the plan view of Fig. 9. FIG. 11 is a schematic diagram showing the principle of detecting a touch point by using the touch panel of the first embodiment of the present invention shown in FIG. 9.

As shown in FIG. 9, the touch panel 300 according to the first embodiment of the present invention includes a plurality of light sources (first to eighth light sources 311 to 318) spaced apart from each other (in FIG. 2 and FIG. The light source is positioned around the peripheral region of the top surface of the first substrate 121 to emit light toward the top surface of the first substrate 121, and a plurality of sensors are shown in FIGS. 3D to 8b. 320, for collecting light passing through the top of the first substrate 121, a waveguide member 340 having a core 341 respectively connected to the sensor 320, and a sensor controller 350 passing through the waveguide member 340 The sensor 320 is coupled to sense whether each sensor 320 collects its light. The waveguide member 340 includes a plurality of cores 341 that connect each of the sensors 320 to the sensor controller 350, which are positioned to interfere with each other and pass through the cladding (eg, "Fig. 6a" and Surrounded by 342) shown in Figure 6b.

The first to eighth light sources 311 to 318 may be formed of a plurality of light emitting elements capable of emitting top surface light corresponding to an ultraviolet (UV) or an infrared wavelength. The light emitting element can be a light emitting diode (LED) or a light tube. The first to eighth light sources 311 to 318 emit light having a wavelength range corresponding to ultraviolet (UV) or infrared rays such that light emitted from the first to eighth light sources 311 to 318 may not affect the image quality of the liquid crystal panel 100.

The first to eighth light sources 311 to 318 may be arranged in a top peripheral region of the liquid crystal panel 100, and may form a plurality of radiation intensity effective regions that do not overlap each other.

For example, as shown in "Picture 10a" and "Picture 10b", the first to eighth light sources 311 to 318 can respectively form an effective area of the A to H radiation intensity.

As shown in "Fig. 10a", the first to fifth light sources 311 to 315 can form an A~E radiation intensity effective area along a vertical direction ("Y" direction shown in Fig. 5). As shown in "Fig. 10b", the sixth to eighth light sources 316 to 318 can form an effective area of the F~H radiation intensity along the right and left directions.

As shown in detail in FIG. 10a, a portion of the first edge of the top peripheral region formed in the second polarization layer 141 (that is, one of the top edges shown in FIG. 10a) is arranged. (That is, the first light source 311 of the left portion shown in "Fig. 10a") may face the second edge opposite to the first edge (that is, as shown in "Fig. 10a"). A bottom edge) emits a top surface light to form an effective area of the 〞A 通 light flux. Here, the top surface light of the A region collected by some of the sensors 320 arranged in a portion of the second edge of the top peripheral region of the second polarization layer 141 can be effectively sensed by the sensor controller 350. .

In particular, although the top surface light of the effective area of the 〞A〞 radiation intensity is collected by some of the sensors 320 positioned in the effective area of the 〞B〞 radiation intensity adjacent to the effective area of the 〞A〞 radiation intensity, the top surface light has one The radiant intensity is less compared to the effective range, and these top surface ray cannot be effectively sensed by the sensor controller 350.

Similar to the first light source 311, a second portion of the first edge of the top peripheral region of the second polarizing layer 141 (that is, a right portion shown in "10a") The light source 312 emits a top surface ray of the 〞B 〞 region that is effectively collected by some of the sensors 320 arranged in opposite portions of the second edge. The third light source 313 arranged in a portion of the top peripheral region of the second polarization layer 141 may emit some of the sensing through a portion of the first edge of the top peripheral region of the second polarization layer 141. The top surface light of the 〞C〞 region that is effectively collected by the device 320. A fourth light source 314 disposed at a central portion of one of the second edges of the top peripheral region of the second polarizing layer 141 may be transmitted through a central portion of the second edge of the top peripheral region of the second polarizing layer 141 Some of the arranged sensors 320 effectively collect the top surface light of the 〞D〞 region. The fifth light source 314 disposed in an opposite portion of the second edge of the top peripheral region of the second polarization layer 141 may emit an opposite portion of the first edge of the peripheral portion of the top portion of the second polarization layer 141 Some of the sensors 320 arranged in the portion effectively collect the top surface light of the 〞E〞 region.

As shown in detail in FIG. 10b, a third edge (one right edge shown in FIG. 10b) of the top peripheral region formed in the second polarization layer 141 is arranged (also That is, the sixth light source 316 at the top of one of the "Fig. 10b" can be emitted toward a portion of the fourth edge (opposite the third edge) of the top peripheral region of the second polarization layer 141. The top surface light is used to form a luminous flux effective area corresponding to the 〞F〞 region along a right and left direction. Here, the top surface light of the 〞F 〞 region effectively collected by some of the sensors 320 arranged in a portion of the fourth edge of the top peripheral region of the second polarization layer 141 is opposite to the sixth light source 316 and is permeable. The sensor controller 350 is effectively sensed. If they are collected by a sensor 320 that is adjacent to the 〞G〞 radiation intensity effective region of the 〞F〞 radiation intensity effective region, then the top surface ray of the 〞F〞 radiation intensity effective region has one of the radiant intensities compared to an effective intensity. The range is smaller and cannot be effectively sensed by the sensor controller 350.

Similar to the sixth light source 316, the first portion of the third edge of the top peripheral region provided in the second polarization layer 141 is arranged (that is, the bottom of one of the bottoms shown in FIG. 10b) The seven light sources 317 are arranged to emit the top surface light of the 〞G〞 region effectively collected by some of the sensors 320 disposed in opposite portions of the fourth edge of the top peripheral region provided in the second polarization layer 141, and arranged The eighth light source 318 in the central portion of one of the fourth edges of the top peripheral region provided in the second polarizing layer 141 may emit some of the third edge arranged through the top peripheral region provided in the second polarizing layer 141. The top surface light of the 〞H〞 region that the sensor 320 effectively collects.

As described above, the top surface of the second polarization layer 141 is divided into a vertical direction corresponding to the A~E radiation intensity effective areas of the first to fifth light sources 311 to 315, and along a right and left direction. Corresponding to the F~H radiation intensity effective areas of the sixth to eighth light sources 316-318. Due to this, when the touch of any point positioned in the top surface of the second polarization layer 141 is touched, at least one of the first and second regions arranged in the top peripheral region provided in the second polarization layer 141 may be sensed. The edge sensor 320 does not successfully collect the top surface light generated by the touch, and can sense at least one sensor that does not successfully collect the third and fourth edge arrangements of the top surface light generated by the touch 320. Thereafter, the coordinates corresponding to the sensed sensor can be detected to calculate the coordinates of the touch point.

That is, as shown in FIG. 11, when a touch point (TP) is generated, the first effective area of the 〞D〞 radiation intensity is arranged in the sensor 320 of the first and second edges. The second sensor 322 of the sensor 321 and the 〞H〞 radiation intensity effective area among the sensors 320 arranged at the third and fourth edges fails to collect the top surface light. At the same time, the sensor controller 350 senses the first sensor 321 and the second sensor 322 that fail to collect the top surface light, and combines the positions of the first and second sensors 321 and 322 such that One of the coordinates of the touch point (TP) can be calculated.

Then, in conjunction with "Fig. 12", a touch panel of a second embodiment of the present invention will be described.

Fig. 12 is a plan view showing a touch panel integrated display device according to a second embodiment of the present invention.

As shown in FIG. 12, the touch panel 300 of the second embodiment of the present invention is arranged in addition to the first to eighth light sources 311 to 318 for the radiation intensity effective areas (A to H). It is the same as the touch panel of the first embodiment of the present invention shown in the above "2nd to 11th", and therefore, a repetitive description between the two embodiments will be omitted.

In other words, similar to the touch panel of the first embodiment, the touch panel 300 of the second embodiment includes a plurality of equal peripheral distances along the entire top peripheral region of the second polarization layer 141. The spaced first to eighth light sources 311 318 318 are configured to emit top surface light, the plurality of sensors 320 for sensing light passing through the top surface of the second polarizing layer 141, and a sensor controller 350 is coupled to the sensors 320 by a waveguide 340 for sensing whether each sensor 320 senses a corresponding top surface light. At the same time, the waveguide member 340 includes a plurality of cores 341 for connecting the sensors 320 to the sensor controller 350. The cores 341 are arranged so as not to interfere with each other and pass through the cladding (eg, The figure 6a and the reference numeral 342 shown in the "figure 6b" are surrounded.

At least one sensor 320 corresponding to the effective area of the radiation intensity is curved toward a light source forming an effective area of the corresponding radiation intensity. The sensors 320 corresponding to the effective area of the radiation intensity are completely arranged in a concave shape.

In particular, the first set (□) of sensors for effectively collecting the top surface light transmitted through the first light source 311 may be arranged to be curved toward the first light source 311. The 〞A〞 radiation intensity effective area and the first group (□) of the sensor can form a complete fan shape.

The second set (□) of sensors that effectively collect the top surface light transmitted through the second source 312 is effective to be concave toward the second source 312. The 〞B〞 radiation intensity effective region and the second group (□) of the waveguide members may form a complete fan shape.

Moreover, the third group (□) of sensors that effectively collect the top surface light rays transmitted through the third light source 313 and emit the top surface light of the effective area of the 〞C〞 radiation intensity may be curved toward the third light source 313 in a concave shape. The fourth group (□) of sensors that effectively collect the top surface rays of the effective area of the radiant intensity emitted by the fourth source 314 may be arranged in a concave shape and curved toward the fourth source 314. The fifth group (□) of sensors that effectively collect the top surface light rays transmitted through the fifth light source 315 and emit the top surface light of the effective area of the radiation intensity may be arranged in a concave shape and curved toward the fifth light source 315. At the same time, the total contour of the 〞C〞 radiation intensity effective area and the third group (□) of the sensor can be symmetric with the 〞E〞 radiation intensity effective area and the fifth group (□) of the sensor to form a Separate fan shape.

The sixth group (□) of sensors that effectively collect the top surface light rays transmitted through the sixth light source 316 and emit the top surface light of the effective area of the radiation intensity may be curved toward the sixth light source 316 to be arranged in a concave shape. The seventh group (□) of sensors that effectively collect the top surface light rays transmitted through the seventh light source 317 and emit the top surface light of the effective area of the radiation intensity may be bent toward the seventh light source 317 to be arranged in a concave lens shape. The eighth group (□) of sensors that effectively collect the top surface light rays transmitted through the eighth light source 318 to emit the H 〞 radiation intensity effective area may be bent toward the eighth light source 318 to be arranged in a concave lens shape. At the same time, the total profile of the 组F〞 region and the sixth group (□) of the sensor can be symmetric with the 〞H〞 radiation intensity effective region and the seventh group (□) of the sensor to form a line lining. Separate the fan shape.

Generally, light has a linear characteristic and the light-emitting element has a property of emitting light in all directions (up, down, right, and left) in a range of viewing angles. The top surface light emitted from the light source 310 (the first to eighth light sources 311 to 318) linearly moves, and conically expands on the top surface of the second polarized layer 141 for incident on the sensor 320. When the waveguide member is bent and arranged for the light collecting surface of the sensor to face the light source 310 (311-318), one of the light collecting surfaces of the sensor 320 in contact with the top surface light of the 〞A〞 region may be It is sufficiently wide to increase the density of the top surface light collected by the sensor 320. As a result, the touch sensing sensitivity of the touch panel can be improved.

As described above, the touch panel integrated display device of the present embodiment of the present invention includes a first substrate including a rear surface on which the color filter array unit 122 is formed and a touch formed thereon The top surface of the control panel 300 is configured to allow the color filter array substrate 120 and the touch panel 300 to share the first substrate 121. That is, the touch panel 300 is directly formed on the first substrate 121. As a result, the adhesive layer for combining the touch panel 300 and the color filter array substrate 120 can be omitted and the structure of the touch panel integrated display device can be simplified. In addition, durability deterioration by the adhesive layer can be prevented and the manufacturing process can be efficient to increase the yield. The touch panel 300 is directly formed on the first substrate 121 without an auxiliary substrate. As a result, the total weight and thickness of the touch panel integrated display device can be reduced compared to the touch panel add-on type liquid crystal display device of the prior art.

The light generated from the light source 310 can reach the sensor 320 above the liquid crystal panel 100 along a path that spans the top surface of the liquid crystal panel. Because of this, the ray path can be shorter compared to conventional techniques and can reduce the loss of radiant intensity produced by the ray path. Assuming that the light source emits the same radiant intensity, the intensity of the light reaching the sensor 320 can be increased compared to the conventional intensity of light of the prior art. As a result, the sensitivity of touch sensing can be improved.

Meanwhile, as described above, the conventional touch panel add-on type liquid crystal display device includes two substrates respectively provided on the touch panel and the color filter array substrate, and is used for combining the touch panel and the color. The adhesive layer of the filter array substrate. Due to this, the light generated from the liquid crystal panel can be emitted to the outside only by a large number of interfaces having a variable refractive index.

However, the touch panel integrated display device of the first and second embodiments of the present invention includes a touch panel and a color filter array substrate 120 that share a single substrate 121. Light generated from the liquid crystal panel can be emitted to the outside only by a small number of interfaces. Thereby, the transmittance or ratio of the incident light can be increased.

Hereinafter, the above features will be described in detail in conjunction with "Fig. 13a", "13b", "14a", and "14b".

"Fig. 13a" and "13b" are schematic diagrams showing an example of the transmittance of a conventional touch panel add-on type liquid crystal display device compared with the light transmittance of the touch panel integrated display device of the present invention. . "Fig. 14a" and "14b" are examples in which the light incident ratio of the conventional touch-type additional liquid crystal display device is compared with the light incident ratio of the touch panel integrated display device of the embodiment of the present invention. Schematic diagram.

As described above, the conventional touch panel add-on type liquid crystal display device includes two substrates respectively provided in the touch panel and a color filter array substrate, and the adhesive layer 30 must be included. Thereby the two substrates are bonded to each other.

As shown in FIG. 13a, the transmitted light (TL) generated from the liquid crystal panel 10 can be emitted to the outside only by the adhesive layer 30 and the substrate of the touch panel. At the same time, the transmitted light (TL) is transmitted through an interface having a variable refractive index, that is, between the substrate and the adhesive layer and between the substrate and the adhesive layer of the touch panel 20, so that the transmitted light is transmitted. Light transmittance cannot contribute to deterioration and can limit improvement in image quality.

In contrast, the touch panel integrated display device according to the first and second embodiments of the present invention has a structure that allows the touch panel 300 and the color filter array substrate 120 to share the first substrate 121.

Because of this, as shown in FIG. 13b, the transmitted light (TL) generated from the liquid crystal panel 100 can be directly emitted to the outside without passing through the substrate of the touch panel, so that the light is compared with the conventional technology. The transmittance can be increased. In particular, according to the analogy, the transmitted light (TL) generated in the structure of the conventional touch panel add-on type liquid crystal display device has a light transmittance of 92%. In contrast, the transmitted light (TL) generated in the structure of the touch panel integrated display device according to the embodiment of the present invention has a transmittance of 100%, which is opposite to that of the conventional touch panel additional liquid crystal display device. The light transmittance of light has an increase of 8%.

Even in the case where the conventional touch panel add-on type liquid crystal display device includes a reflective liquid crystal panel similar to the transmissive liquid crystal panel, an incident external light (IL) can be used only by the touch panel 300 and the adhesive layer 30. It is incident on the liquid crystal panel 10. Because of this, the incident external light (IL) is a boundary surface between the external touch panel 20, a boundary surface between the touch panel 20 and the adhesive layer 30, and between the adhesive layer 30 and the liquid crystal panel 10. A boundary surface (where the refractive index changes) is reflected or lost.

In contrast, according to the first and second embodiments of the present invention as shown in "Fig. 14b", an incident external light (IL) is directly incident on the liquid crystal panel 100. Due to this, the light can be reflected or lost only through a boundary surface between the outside and the liquid crystal panel 100. In particular, according to the analogy result, the reflectivity of an incident external light (IL) of the touch panel integrated display device according to the embodiment of the present invention is determined, compared to the conventional touch panel additional liquid crystal display. The reflectivity of the device is reduced by 7%.

As a result, the touch panel integrated display device according to the first and second embodiments of the present invention has a structure that allows the touch panel and the color filter array substrate to share the single substrate. As a result, the overall weight and thickness can be reduced, and the slim design and portability of the touch panel integrated display device can be improved. Further, compared with the structure of the conventional touch panel add-on type liquid crystal display device, a simpler structure makes it possible to perform the process more smoothly and it can increase the transmittance or incident ratio of transmitted light or incident light. As a result, the image quality can be improved and the density of the light reaching the top surface of the sensor can be prevented from being reduced through the light path to improve the efficiency of the touch sensing.

Meanwhile, the touch portion 300 shown in FIGS. 2 to 15 is an example for explaining an embodiment of the present invention, and the touch panel integrated display device according to the present invention is Not limited to this. That is to say, a predetermined number of light sources may be provided depending on the capabilities of the light source, instead of eight light sources, or the light sources arranged in the horizontal direction and those arranged in the vertical direction may have different functions. Due to this, the shape and number of the effective areas of the luminous flux can vary. Further, the touch panel 300 shown in "10th" to "12th" is shown as including two sensor controllers 350, 322, and this is an example. Where a channel is included that is connected to all of the waveguides, a single sensor controller 350 or two or more sensor controllers 350 may be provided depending on the number of channels that can be processed.

It will be appreciated by those skilled in the art that modifications and modifications may be made without departing from the spirit and scope of the invention as disclosed in the appended claims. Please refer to the attached patent application for the scope of protection defined by the present invention.

10,100. . . LCD panel

11. . . First polarization layer

12. . . Second polarization layer

20. . . Touch panel

twenty one. . . Transparent substrate

twenty two. . . light source

twenty three. . . Reflective plate

twenty four. . . Sensor

30. . . Adhesive layer

110. . . Thin film array substrate

110a, 110b. . . TFT substrate

111. . . Second substrate

112. . . Gate line

113. . . Data line

114. . . Pixel electrode

115. . . Common electrode

120. . . Color filter array substrate

120a, 120b. . . CF substrate

121. . . First substrate

122. . . Color filter array unit

130. . . Liquid crystal layer

140. . . First polarization layer

141. . . Second polarization layer

200. . . Backlight unit

300. . . Touch panel

310. . . light source

311. . . First light source

312. . . Second light source

313. . . Third light source

314. . . Fourth light source

315. . . Fifth light source

316. . . Sixth light source

317. . . Seventh light source

318. . . Eighth light source

320. . . Sensor

321. . . First sensor

322. . . Second sensor

330. . . Flexible printed circuit board

340. . . Waveguide

341. . . Core

342. . . layers

343. . . The buffer layer

350. . . Sensor controller

1220‧‧‧Black matrix layer

1221‧‧‧Color filter layer

1222‧‧‧ coating

1223‧‧‧Common electrode

IL‧‧‧ incident external light

TL‧‧‧transmitted light

T‧‧‧film transistor

P‧‧‧ pixel area

TP‧‧‧ touch point

1 is a schematic view of a touch panel add-on type liquid crystal display device of the prior art;

2 is a cross-sectional view of a touch panel integrated display device according to a first embodiment of the present invention;

3 is a perspective view of a twisted nematic (TN) type liquid crystal panel of the touch panel integrated display device according to the first embodiment of the present invention;

4 is a perspective view of a planar switching type liquid crystal panel of a touch panel integrated display device according to a first embodiment of the present invention;

5 is a partial perspective view of a touch panel of the touch panel integrated display device according to the first embodiment of the present invention;

Figure 6a is a cross-sectional view of the first substrate, a second polarization layer, and a touch panel in the YZ direction corresponding to the I-I' line shown in Figure 5;

Figure 6b is a cross-sectional view of the first substrate, the second polarizing layer, and a waveguide in the XZ direction corresponding to the II-II' line shown in Figure 5;

Figure 7a is a schematic diagram of the arrangement of the light source and the sensor provided in the touch panel shown in Figure 5;

Figures 7b to 7e are schematic views of other examples of the arrangement of the light source and the sensor;

8a and 8b are plan views of the waveguide in the XY direction shown in Fig. 5;

9 is a plan view of a touch panel of the touch panel integrated display device according to the first embodiment of the present invention;

Figure 10a is a schematic view showing the effective area of the radiation intensity of the light source arranged by the top and bottom edges of the top of the display panel shown in the plan view of Figure 9;

Figure 10b is a schematic view showing the effective area of the radiation intensity of the light source arranged at the right and left edges of the top of the display panel shown in the plan view of Figure 9;

FIG. 11 is a schematic diagram showing the principle of detecting a touch point by using the touch panel of the first embodiment of the present invention shown in FIG. 9;

Figure 12 is a plan view showing a touch panel integrated display device according to a second embodiment of the present invention;

13a and 13b are diagrams showing an example of a light transmittance of a conventional touch panel add-on type liquid crystal display device compared with a light transmittance of the touch panel integrated display device of the present invention;

FIGS. 14a and 14b are diagrams showing an example in which the light incident ratio of the conventional touch-type additional liquid crystal display device is compared with the light incident ratio of the touch panel integrated display device of the embodiment of the present invention.

100. . . LCD panel

110. . . Thin film array substrate

120. . . Color filter array substrate

121. . . First substrate

122. . . Color filter array unit

130. . . Liquid crystal layer

140. . . First polarization layer

141. . . Second polarization layer

200. . . Backlight unit

300. . . Touch panel

310. . . light source

320. . . Sensor

330. . . Flexible printed circuit board

340. . . Waveguide

Claims (10)

A touch panel integrated display device includes: a display panel including a plurality of pixels for displaying an image; and a touch panel formed on a periphery of a top surface of the display panel An area is configured to sense a touch generated on the display panel, wherein the touch panel includes: a plurality of light sources formed on the peripheral area of the top surface of the display panel, wherein the touch panel At least one of the equal light sources is arranged at each edge of the peripheral surface of the top surface of the display panel, and wherein each of the light sources is configured to emit light toward the top surface of the display panel; a plurality of sensors are formed on the edge The peripheral region of the top surface of the display panel, wherein two or more of the sensors are arranged at each edge of the peripheral region of the top surface of the display panel and are spaced apart from each other by an equal distance And each of the sensors collects light emitted by one of the light sources formed at opposite edges of the peripheral region of the top surface of the display panel; a waveguide member formed thereon The peripheral surface of the top surface of the display panel, and the plurality of cores and a cladding layer, the cores are connected to the sensors, and the cladding layer is formed to surround the cores, wherein the cladding layer is formed to surround the cores The cladding has a refractive index lower than that of the cores; a flexible printed circuit board formed along an inner surface of the waveguide, supplying each driving voltage to the light sources and The sensors; a sensor controller is connected to the sensors by the cores, wherein the sensor controller is configured to sense whether each of the sensors senses the collected light and calculates the touch One of the coordinates. The touch panel integrated display device of claim 1, wherein the light sources are a plurality of light-emitting elements that use light of a wavelength range corresponding to an ultraviolet or infrared light. The touch panel integrated display device of claim 1, wherein the top surface of the display panel is divided into a plurality of radiation intensity effective regions respectively corresponding to the light sources; and from the light sources After the light source is emitted, the light collected by the at least one sensor arranged in a single radiation intensity effective area corresponding to the single light source has a predetermined condition that can be effectively sensed by the sensor controller Radiation intensity. The touch panel integrated display device of claim 3, wherein the sensors corresponding to each of the radiation intensity effective regions are arranged in a concave lens shape, corresponding to each radiation intensity effective region. A light source. The touch panel integrated display device of claim 1, wherein the sensors are arranged in at least one row at each edge of a top peripheral region of one of the display panels. The touch panel integrated display device of claim 1, wherein the sensors are arranged in at least two columns so as to be outside the top surface of the display panel Each edge of the surrounding area has a meandering shape. The touch panel integrated display device of claim 1, wherein the light sources are compared with one of each edge of the peripheral region of the top surface of the display panel High department. The touch panel integrated display device of claim 1, wherein the display panel is a liquid crystal panel comprising a transistor array substrate and a color filter array substrate facing each other And a liquid crystal layer is filled between the transistor array substrate and the color filter array substrate; and wherein the transistor array substrate comprises: a second substrate opposite to the first substrate; a data line and a plurality of gate lines intersecting each other on the second substrate to define a plurality of pixel regions corresponding to the pixels; a plurality of thin film transistors are respectively formed on the pixels An intersection between the gate line and the data lines; and a plurality of pixel electrodes formed on the pixel regions on the second substrate for respectively connecting to the thin film transistors; The material filter array substrate comprises: a color filter array unit formed on a rear surface of one of the first substrates opposite to a surface on which the touch panel is formed. The touch panel integrated display device of claim 8, wherein the color filter array unit comprises: a black matrix layer formed in an outer region of one of the pixel regions formed on the rear surface of the first substrate for blocking light leakage in the outer region of the pixel regions; a color filter layer formed in the pixel regions formed on the rear surface of the first substrate for transmitting light of a wavelength range corresponding to the pixels; and a coating A layer is formed flat on the color filter layer. The touch panel integrated display device of claim 8, wherein the liquid crystal panel comprises: a backlight unit formed under the transistor array substrate for emitting light to the liquid crystal layer; a polarizing layer formed on a rear surface of one of the second substrates for polarizing the light emitted from the backlight unit; and a second polarizing layer formed on the first substrate Above a top surface for polarizing light through the liquid crystal layer.