TW201415123A - In-cell touch display and electronic apparatus thereof - Google Patents

Abstract

An in-cell touch display comprises a thin-film transistor (TFT) substrate, a color filter (CF) substrate, a liquid crystal (LC) layer, first touch-control electrodes, and a first display electrode. Parallel gate lines of the TFT substrate extend along with a first axis direction, and parallel data lines of the TFT substrate extend along with a second taxis direction and are insulated from the gate lines. The LC layer is disposed between the TFT substrate and the CF substrate. The first touch-control electrodes are disposed between the TFT substrate and LC layer, and on the TFT substrate. The parallel first touch-control electrodes extend along with the first or second axis direction. The first display electrodes and the first display electrode are insulated to each other and located on the same layer.

Description

In-cell touch display and electronic device thereof

The invention relates to a touch display, and in particular to an in-cell touch display and an electronic device thereof.

Most traditional touch displays are external touch displays. The external touch display is composed of a touch panel and a liquid crystal display panel, wherein the touch panel is attached to the liquid crystal display panel. The touch panel has a plurality of touch driving electrodes and a plurality of touch sensing electrodes, and the controller sequentially transmits the touch driving signals to the plurality of touch driving electrodes, and the plurality of touch sensing electrodes are used to receive the plurality of touch sensing electrodes. Each of the touch sensing signals sends a plurality of touch sensing signals to the controller, so that the controller determines at least one touch position accordingly. Since the external touch display is composed of a touch panel and a liquid crystal display panel, it has three or more layers of glass, so it is thick and heavy, and does not conform to the trend of light and thin products.

In addition, although the architecture of the in-cell touch display is proposed, the touch sensing layer is directly embedded in the liquid crystal display panel. However, since the touch sensing layer is directly embedded in the interior of the liquid crystal display panel, the distance between the touch sensing electrode and the common electrode and the distance between the touch driving electrode and the common electrode are both close together. The mutual capacitance between the touch sensing electrode and the touch driving electrode is increased.

It can be known from the capacitor charging formula that when the capacitance value becomes large, the charging time required for charging the capacitor to a fixed charge becomes long. When the touch driving electrode receives the touch driving signal of the square wave, the touch sensing signal on the touch sensing electrode is a triangular wave touch sensing because the mutual capacitance becomes large. signal. Accordingly, the amount of signal change of the touch sensing signal becomes smaller, and It is difficult to determine the touch position, so that the touch sensing sensitivity of the in-cell touch display is deteriorated.

In addition, since it is impossible for each pixel of the in-cell touch display to have the touch sensing electrode and the touch driving electrode, the parasitic capacitance of the liquid crystal display panel may not be uniform. Thus, when the in-cell touch display is displayed, the brightness of the display may be uneven, and there may be horizontal stripes (that is, a Mura phenomenon).

The embodiment of the invention provides an in-cell touch display, which comprises a thin film transistor substrate, a color filter substrate, a liquid crystal layer, a plurality of first touch electrodes and a first display electrode. The thin film transistor substrate includes a plurality of gate lines and a plurality of data lines. A plurality of gate lines extend along the first axial direction and are arranged in parallel with each other. A plurality of data lines extend along the second axial direction, are arranged in parallel with each other, and are insulated from the plurality of gate lines, wherein the plurality of data lines and the plurality of gate lines are interleaved in a plane to define a plurality of pixel regions. The liquid crystal layer is located between the thin film transistor substrate and the color filter substrate. The plurality of first touch electrodes are located between the thin film transistor substrate and the liquid crystal layer and on the thin film transistor substrate, extending along one of the first axial direction and the second axial direction, and arranged in parallel with each other. The first display electrode is insulated from the plurality of first touch electrodes and disposed in the same layer.

The embodiment of the invention provides an in-cell touch display, which includes a common electrode, a plurality of pixel electrodes, a plurality of gate lines, a plurality of data lines, a plurality of touch sensing electrodes, and a plurality of The touch driving electrodes, the plurality of first dummy electrodes and the plurality of second dummy electrodes. A plurality of gate lines extend along the first axial direction and are arranged in parallel with each other. Multiple data lines along the second axis Extend and are arranged parallel to each other. The plurality of touch driving electrodes extend along the first axial direction and are arranged in parallel with each other. The plurality of touch sensing electrodes extend along the second axial direction and are arranged in parallel with each other. The plurality of first dummy electrodes extend along the first axial direction and are arranged in parallel with each other. The plurality of second dummy electrodes extend along the second axis and are arranged in parallel with each other. At least one first dummy electrode is disposed between any two adjacent touch driving electrodes, and at least one second dummy electrode is disposed between any two adjacent touch sensing electrodes.

The embodiment of the invention provides an electronic device, which includes an electronic device body and the in-cell touch display, wherein the in-cell touch display is electrically connected to the electronic device body.

In summary, the touch sensing sensitivity of the in-cell touch display provided by the embodiment of the present invention is better, or it can reduce the unevenness of the brightness of the display (that is, reduce the probability of occurrence of the Mura phenomenon).

The detailed description of the present invention and the accompanying drawings are to be understood by the claims The scope is subject to any restrictions.

The embodiment of the invention provides an in-cell touch display, which can reduce the influence of the common electrode on the touch sensing electrode and the touch driving electrode, so as to reduce the mutual capacitance between the touch sensing electrode and the touch driving electrode. One of the touch sensing electrodes and the touch driving electrodes of the in-cell touch display is disposed between the thin film transistor substrate and the liquid crystal layer, and is located on the thin film transistor substrate. In addition, one of the touch sensing electrode and the touch driving electrode is insulated from the pixel electrode and the common electrode and disposed in the same layer.

In addition, the common electrode of the in-cell touch display is patterned common The pole avoids the touch driving electrode or the touch sensing electrode on the plane, or avoids the touch driving electrode and the touch sensing electrode on the plane at the same time. In other words, the patterned common electrode may be a plurality of strip electrodes extending along the row direction or the column direction, which avoids the touch driving electrode or the touch sensing electrode on the plane, or the patterned common electrode may be multiple The block electrode avoids the touch driving electrode and the touch sensing electrode at the same time on the plane, and the plurality of block electrodes in the same column or the same row can be connected through the wires.

In addition, an embodiment of the present invention further provides an in-cell touch display for reducing unevenness of display brightness. The in-cell touch display has a plurality of first dummy electrodes and a plurality of second dummy electrodes, wherein at least one first dummy electrode is disposed between any two adjacent touch driving electrodes, and any two adjacent touch sensing electrodes There is at least one second virtual electrode between them.

1 is a plan view of an in-cell touch display according to an embodiment of the present invention, FIG. 2 is a schematic diagram of a stack structure of an in-cell touch display device according to an embodiment of the present invention, and FIG. 3 is a schematic diagram of the present invention. A partial cross-sectional view of an in-cell touch display of an embodiment. The in-cell touch display 1 includes a glass 101, 115, a gate line 102, a gate insulating layer 103, a channel layer 104, a data line 105, a protective layer 106, 110, a flat layer 107, a second touch electrode and a wire layer. 108. The second display electrode 109, the first touch electrode 111, the first display electrode 112, the liquid crystal layer 113, and the color filter 114. In this embodiment, the glass 101, the gate line 102, the gate insulating layer 103, the channel layer 104 and the data line 105 form a thin film transistor substrate, and the color filter 114 and the glass 115 form a color filter substrate. The liquid crystal layer 113 is located between the thin film transistor substrate and the color filter substrate.

The gate line 102 is located above the glass 101, and the plurality of gate lines 102 extend along a first axial direction (e.g., the X-axis) and are arranged in parallel with each other. Gate insulation 103 is above the gate line 102 and the channel layer 104 is above the gate insulating layer 103. A plurality of data lines 105 are located above the channel layer 105, extend along a second axial direction (for example, the Y axis), and are arranged in parallel with each other, and the plurality of data lines 105 and the plurality of gate lines cross each other on a plane, and are defined Multiple pixel areas. The protective layer 106 is above the data line 105 and the planar layer 107 is above the protective layer 106. In the embodiment of the present invention, the flat layer 107 may be removed, in other words, the presence or absence of the flat layer 107 is not intended to limit the present invention.

The second touch electrode and the wire layer 108 are located on the same layer as the second display electrode 109 and are located above the flat layer 107. The second display electrode 109 is a patterned common electrode including a plurality of bulk electrodes in this embodiment to avoid the second touch electrodes 1081 and the first touch electrodes 111 simultaneously on the plane. The second touch electrode and wire layer 108 includes a wire 1082 and a second touch electrode 1081. The wire 1082 and the second touch electrode 108 are also coplanar, and are used to connect a plurality of block electrodes in the same column or the same row, that is, the wires 1082 are connected to the second display electrode 109. The plurality of second touch electrodes 1081 extend along the first axial direction and are arranged in parallel with each other. The second touch electrodes 1081 can be, for example, metal electrodes or transparent conductive electrodes, and can serve as a plurality of touch driving electrodes. The plurality of second touch electrodes 1081 and the second display electrodes 109 are coplanar with each other, and the second touch electrodes 1081 are located in the interval between any two adjacent block electrodes.

The protective layer 110 is located above the second touch electrode and the wire layer 108 and the second display electrode 109. The first touch electrode 111 is located in the same layer (coplanar) as the first display electrode 112. The plurality of second touch electrodes 111 extend along the second axial direction and are arranged in parallel with each other. The second touch electrodes 111 can be, for example, metal electrodes or transparent conductive electrodes, and serve as a plurality of touch sensing electrodes. The first display electrode 112 is located as a plurality of pixel electrodes, the plurality of pixel electrodes are located in the plurality of pixel regions, and the first touch electrodes 111 are located in any two adjacent images. Within the interval between the electrodes. The liquid crystal layer 113 is located above the first touch electrode 111 and the first display electrode 112. The color filter 114 is located above the liquid crystal layer 113, and the glass 115 is positioned above the color filter 114.

The in-cell touch display 1 can eliminate the assembly steps of the liquid crystal display panel and the touch panel and the additional glass, so the in-cell touch display 1 tends to be light and thin. In addition, the in-cell touch display 1 reduces the area of the touch driving electrode and the touch sensing electrode on the plane of the second display electrode 109 and the first display electrode 112, so that the second touch can be further effectively reduced. The mutual capacitance of the electrode 1081 and the first display electrode 111 is used to increase the signal variation of the touch sensing signal and improve the touch sensitivity of the in-cell touch display 1 . In addition, the second display electrode 109 and the first display electrode 112 may be a pixel electrode and a patterned common electrode having a plurality of block electrodes, and the second touch electrode and the wire in the wire layer 108. 1082 will move to the first touch electrode 111. In summary, the present invention is not limited to the embodiment of FIGS. 1 to 3.

It should be noted that the in-cell touch display 1 can be used for In-Plane Switching, Fringe Field Switching and twisted nematic liquid crystal display. In addition, in this embodiment, the second touch electrode 1081 and the first touch electrode 111 are respectively superposed on the gate line 102 and the data line 105 on a plane. However, the present invention is not limited thereto, and is implemented in other implementations. For example, the second touch electrode 1081 and the first touch electrode 111 avoid the gate line 102 and the data line 105 on the plane.

4 and FIG. 5, FIG. 4 is a plan view of an in-cell touch display according to another embodiment of the present invention, and FIG. 5 is a schematic diagram of a stack structure of an in-cell touch display according to another embodiment of the present invention. The in-cell touch display 2 includes glass 201, 215, a gate line 202, a gate insulating layer 203, and a channel layer. 204, data line 205, protective layer 206, 210, flat layer 207, second touch electrode 108, second display electrode 209, first touch electrode 211, first display electrode 212, liquid crystal layer 213 and color filter 214. In this embodiment, the glass 201, the gate line 202, the gate insulating layer 203, the channel layer 204 and the data line 205 form a thin film transistor substrate, and the color filter 214 and the glass 215 form a color filter substrate. The liquid crystal layer 213 is located between the thin film transistor substrate and the color filter substrate.

The gate line 202 is located above the glass 201, and the plurality of gate lines 202 extend along a first axial direction (e.g., the X-axis) and are arranged in parallel with each other. The gate insulating layer 203 is over the gate line 202 and the channel layer 204 is over the gate insulating layer 203. The data lines 205 are located above the channel layer 205 and extend along a second axial direction (e.g., the Y-axis) while being aligned parallel to each other. A plurality of data lines 205 and a plurality of gate lines cross each other on a plane to define a plurality of pixel regions. The protective layer 206 is above the data line 205 and the planar layer 207 is above the protective layer 206. In the embodiment of the present invention, the flat layer 207 may be removed, in other words, the presence or absence of the flat layer 207 is not intended to limit the present invention.

The second touch electrode 208 is located on the same layer as the second display electrode 209 and is located above the flat layer 207. The second display electrode 209 is a patterned common electrode including a plurality of strip electrodes in this embodiment to avoid the first touch electrode 208 on a plane. The plurality of second touch electrodes 108 extend along the first axial direction and are arranged parallel to each other. The second touch electrodes 108 can be, for example, metal electrodes or transparent conductive electrodes, and serve as a plurality of touch driving electrodes. The plurality of second touch electrodes 208 and the second display electrodes 209 are coplanar with each other, and the second touch electrodes 208 are located in the interval between any two adjacent strip electrodes.

The protective layer 210 is located above the second touch electrode 208 and the second display electrode 209. The first touch electrode 211 is located on the same layer as the first display electrode 212 ( Common plane). The plurality of first touch electrodes 211 extend along the second axial direction and are arranged in parallel with each other. The first touch electrodes 211 can be, for example, metal electrodes or transparent conductive electrodes, and serve as touch sensing electrodes. The plurality of first display electrodes 212 are located as a plurality of pixel electrodes, the plurality of pixel electrodes are located in the plurality of pixel regions, and the first touch electrodes 211 are located in the interval between any two adjacent pixel electrodes. The liquid crystal layer 213 is located above the first touch electrode 211 and the first display electrode 212. The color filter 214 is located above the liquid crystal layer 213, and the glass 215 is located above the color filter 214.

The in-cell touch display 2 can eliminate the assembly steps of the liquid crystal display panel and the touch panel and the additional glass, so the in-cell touch display 2 tends to be thinner and lighter. In addition, the in-cell touch display 2 reduces the area of the second touch electrode 208 overlapping the second display electrode 209 and the first display electrode 212 on the plane, so that the first touch electrode 208 and the second can be effectively reduced. The mutual capacitance of the touch electrodes 211 is used to increase the signal variation of the touch sensing signal and improve the touch sensitivity of the in-cell touch display 2 .

It should be noted that the in-cell touch display 2 can be used for a transverse electric field effect, a wide viewing angle, and a twisted nematic liquid crystal display. In addition, in this embodiment, the second touch electrode 208 and the first touch electrode 211 are respectively superposed on the gate line 202 and the data line 205 on a plane. However, the present invention is not limited thereto, and is implemented in other implementations. For example, the second touch electrode 208 and the first touch electrode 211 avoid the gate line 202 and the data line 205 on the plane. In addition, the second display electrode 209 and the first display electrode 212 may be a pixel electrode and a patterned common electrode having a plurality of strip electrodes, respectively. In summary, the present invention is not limited to the embodiment of FIGS. 4 and 5.

Please refer to FIG. 6 and FIG. 7. FIG. 6 is another embodiment of the present invention. FIG. 7 is a plan view showing a stacking structure of an in-cell touch display according to another embodiment of the present invention. The in-cell touch display 3 includes glass 301, 316, a gate line 302, a gate insulating layer 303, a channel layer 304, a data line 305, a protective layer 306, 309, 311, a flat layer 307, and a second display electrode 308. The second touch electrode 310, the first touch electrode 311, the first display electrode 313, the liquid crystal layer 314, and the color filter 315. In this embodiment, the glass 301, the gate line 302, the gate insulating layer 303, the channel layer 304 and the data line 305 form a thin film transistor substrate, and the color filter 315 and the glass 316 form a color filter substrate. The liquid crystal layer 314 is located between the thin film transistor substrate and the color filter substrate.

The gate line 302 is located above the glass 301, and the plurality of gate lines 302 extend along the first axial direction (e.g., the X-axis) and are arranged in parallel with each other. The gate insulating layer 303 is over the gate line 302 and the channel layer 304 is over the gate insulating layer 303. The data lines 305 are located above the channel layer 305, extending along a second axial direction (e.g., the Y-axis) and parallel to each other. A plurality of data lines 305 and a plurality of gate lines cross each other on a plane to define a plurality of pixel regions. The protective layer 306 is above the data line 305 and the planar layer 307 is above the protective layer 306. In the embodiment of the present invention, the flat layer 307 can be removed, in other words, the presence or absence of the flat layer 307 is not intended to limit the present invention.

The second display electrode 308 is located above the planar layer 307. The second display electrode 308 is a patterned common electrode including a plurality of strip electrodes in this embodiment to avoid the first touch electrode 312 on a plane. The protective layer 309 is located above the second display electrode 308. The second touch electrodes 310 are disposed on the protective layer 309, and the plurality of second touch electrodes 310 extend along the first axial direction and are arranged in parallel with each other. The second touch electrodes 310 can be, for example, metal electrodes or transparent conductive electrodes. As a plurality of touch drive electrodes.

The protective layer 311 is located above the driving electrode 310. The first touch electrodes 312 and the first display electrodes 313 are located on the protective layer 311, and the first touch electrodes 312 are located in the same layer (coplanar) as the first display electrodes 313. The plurality of first touch electrodes 312 extend along the second axial direction and are arranged in parallel with each other. The first touch electrodes 312 can be, for example, metal electrodes or transparent conductive electrodes to serve as a plurality of touch sensing electrodes. The plurality of first display electrodes 313 are located in the plurality of pixel regions as a plurality of pixel electrodes, and the first touch electrodes 312 are located in the interval between any two adjacent pixel electrodes. The liquid crystal layer 314 is located above the first touch electrode 312 and the first display electrode 313. The color filter 315 is located above the liquid crystal layer 314, and the glass 316 is positioned above the color filter 315.

The in-cell touch display 3 can eliminate the assembly steps of the liquid crystal display panel and the touch panel and the additional glass, so the in-cell touch display 3 tends to be thinner and lighter. In addition, the in-cell touch display 3 reduces the area of the touch sensing electrode overlapping the second display electrode 308 and the first display electrode 313 on the plane, so that the touch driving electrode and the touch sensing electrode can be effectively reduced. The mutual capacitance is used to increase the signal variation of the touch sensing signal and improve the touch sensitivity of the in-cell touch display 3.

It should be noted that the in-cell touch display 3 can be used for a transverse electric field effect, a wide viewing angle, and a twisted nematic liquid crystal display. In addition, in this embodiment, the first touch electrode 310 and the second touch electrode 312 are respectively superposed on the gate line 302 and the data line 305 on a plane. However, the present invention is not limited thereto, and is implemented in other implementations. For example, the first touch electrode 310 and the second touch electrode 312 avoid the gate line 302 and the data line 305 on the plane. In addition, the second display electrode 308 and the first display electrode 313 may be a pixel electrode and a patterned common electrode having a plurality of strip electrodes, respectively. In summary, the present invention is not based on the embodiments of FIGS. 6 and 7. limit.

8 and FIG. 9, FIG. 8 is a plan view of an in-cell touch display according to another embodiment of the present invention, and FIG. 9 is a schematic diagram of a stack structure of an in-cell touch display according to another embodiment of the present invention. The in-cell touch display 4 includes glass 401, 414, gate line 402, gate insulating layer 403, channel layer 404, data line 405, protective layer 406, 409, flat layer 407, second display electrode 408, first The touch electrode 410, the second display electrode 411, the liquid crystal layer 412, and the color filter 413. In this embodiment, the glass 401, the gate line 402, the gate insulating layer 403, the channel layer 404 and the data line 405 form a thin film transistor substrate, and the color filter 412 and the glass 413 form a color filter substrate. The liquid crystal layer 412 is located between the thin film transistor substrate and the color filter substrate.

The gate line 402 is located above the glass 401, and the plurality of gate lines 402 extend along the first axial direction (e.g., the X-axis) and are arranged in parallel with each other. The gate insulating layer 403 is over the gate line 402 and the channel layer 404 is over the gate insulating layer 403. The data lines 405 are located above the channel layer 405, extending along a second axial direction (e.g., the Y-axis) and parallel to each other. A plurality of data lines 405 and a plurality of gate lines cross each other on a plane to define a plurality of pixel regions. The protective layer 406 is above the data line 405 and the planar layer 407 is above the protective layer 406. In the embodiment of the present invention, the flat layer 407 can be removed, in other words, the presence or absence of the flat layer 407 is not intended to limit the present invention.

The second display electrode 408 is located above the planarization layer 407. The second display electrode 408 is a patterned common electrode including a plurality of strip electrodes in this embodiment. In this embodiment, the second display electrode 408 simultaneously serves as a patterned common electrode having a plurality of strip electrodes, and at the same time It can also be used as multiple touch drive electrodes. a plurality of strip electrodes extending along the first axial direction and arranged parallel to each other The plurality of strip electrodes may be, for example, metal electrodes or transparent conductive electrodes.

Briefly, the in-cell touch display further includes a controller electrically connected to the second display electrode 408. The controller is configured to control the second display electrode 408 to receive the common electrode signal in the display mode to use the second display electrode 408 as a common electrode, and receive the touch driving signal in the touch mode to enable the second display in a time division multiplexing manner. The electrode 408 is used as a touch drive electrode.

The protective layer 409 is located above the second display electrode 408. The first touch electrode 410 is located in the same layer (coplanar) as the first display electrode 411. The plurality of first touch electrodes 410 extend along the second axial direction and are arranged in parallel with each other. The first touch electrodes 410 can be, for example, metal electrodes or transparent conductive electrodes as the touch sensing electrodes. The plurality of first display electrodes 411 include a plurality of pixel electrodes, the plurality of pixel electrodes are located in the plurality of pixel regions, and the first touch electrodes 410 are located in the interval between any two adjacent pixel electrodes. The liquid crystal layer 412 is located above the first touch electrode 410 and the first display electrode 411. The color filter 413 is located above the liquid crystal layer 412, and the glass 414 is located above the color filter 413.

The in-cell touch display 4 can eliminate the assembly steps of the liquid crystal display panel and the touch panel and the additional glass, so the in-cell touch display 4 tends to be light and thin. In addition, the in-cell touch display 4 reduces the touch driving electrodes, and the second display electrode 409 is used as the touch driving electrode in the touch mode, so that the touch driving electrodes and the touch sensing electrodes can be effectively reduced. The mutual capacitance is used to increase the signal variation of the touch sensing signal and improve the touch sensing sensitivity of the in-cell touch display 4 .

It should be noted that the in-cell touch display 4 can be used for a transverse electric field effect, a wide viewing angle, and a twisted nematic liquid crystal display. In addition, here In the embodiment, the first touch electrode 411 is superimposed on the data line 405 in a plane. However, the present invention is not limited thereto. In other embodiments, the first touch electrode 411 avoids the data line 205 on a plane. .

In addition, the second display electrode 409 and the first display electrode 411 may be a pixel electrode and a patterned common electrode having a plurality of strip electrodes, respectively. At this time, the controller controls the second display electrode 408 to receive the display signal in the display mode to use the second display electrode 408 as the pixel electrode and receive the touch drive signal in the touch mode to enable the second display electrode 408. The two display electrodes 408 are used as touch drive electrodes. In summary, the present invention is not limited to the embodiment of FIGS. 8 and 9.

10 and FIG. 11, FIG. 11 is a plan view of an in-cell touch display according to another embodiment of the present invention, and FIG. 10 is a schematic diagram of a stack structure of an in-cell touch display according to another embodiment of the present invention. The in-cell touch display 7 includes a glass 701, 715, a gate line 702, a gate insulating layer 703, a channel layer 704, a data line 705, a protective layer 706, 709, a flat layer 707, a second display electrode 708, and a first The touch electrode 710, the first display electrode 711, the liquid crystal layer 713, the flat layer 713 (which can be formed by over-coating), the color filter 714 and the second touch electrode 716. In this embodiment, the glass 701, the gate line 702, the gate insulating layer 703, the channel layer 704 and the data line 705 form a thin film transistor substrate, and the color filter 714 and the glass 715 form a color filter substrate. The liquid crystal layer 713 is located between the thin film transistor substrate and the color filter substrate.

The gate line 702 is located above the glass 701, and the plurality of gate lines 702 extend along the first axial direction (eg, the X-axis) and are arranged in parallel with each other. The gate insulating layer 703 is over the gate line 702 and the channel layer 704 is over the gate insulating layer 703. The data line 705 is located above the channel layer 704 along the second axis (eg, As the Y axis extends, it is arranged parallel to each other. A plurality of data lines 705 and a plurality of gate lines 702 cross each other on a plane to define a plurality of pixel regions. The protective layer 706 is above the data line 705 and the planar layer 707 is above the protective layer 706. In the embodiment of the present invention, the flat layer 707 can be removed, in other words, the presence or absence of the flat layer 707 is not intended to limit the present invention.

The second display electrode 708 is located above the flat layer 707 and has a protective layer 709 thereon. The plurality of second display electrodes 708 includes a plurality of pixel electrodes, and the plurality of pixel electrodes are located in the plurality of pixel regions. The first touch electrode 710 is located on the same layer as the first display electrode 711 and is located above the protective layer 709. The first display electrode 711 is a patterned common electrode including a plurality of strip electrodes in this embodiment to avoid the first touch electrode 710 on a plane. The plurality of first touch electrodes 710 extend along the first axial direction and are arranged in parallel with each other. The first touch electrodes 710 can be, for example, metal electrodes or transparent conductive electrodes, and serve as touch drive electrodes.

The liquid crystal layer 712 is located above the first touch electrode 710 and the first display electrode 711 , and the flat layer 713 is located above the liquid crystal layer 712 . The color filter 714 is located above the liquid crystal layer 712, and the glass 715 is positioned above the color filter 714. The plurality of second touch electrodes 716 are located on the other side of the glass 715 opposite to the liquid crystal layer 712 and extend along the second axial direction and are arranged in parallel with each other. The second touch electrode 716 can be, for example, a transparent conductive electrode, and Multiple touch sensing electrodes.

The in-cell touch display 7 can eliminate the assembly steps of the liquid crystal display panel and the touch panel and the additional glass, so the in-cell touch display 7 tends to be light and thin. In addition, the in-cell touch display 7 can increase the signal variation of the touch sensing signal and improve the touch sensitivity of the in-cell touch display 7.

It should be noted that the in-cell touch display 7 can be used for a transverse electric field effect, a wide viewing angle, and a twisted nematic liquid crystal display. In addition, in this embodiment, the second touch electrode 716 and the first touch electrode 710 are respectively superposed on the gate line 702 and the data line 705 on a plane. However, the present invention is not limited thereto, and is implemented in other implementations. For example, the second touch electrode 716 and the first touch electrode 710 avoid the gate line 702 and the data line 705 on the plane. In addition, the second display electrode 708 and the first display electrode 711 may be patterned common electrodes and pixel electrodes having a plurality of strip electrodes, respectively. In summary, the present invention is not limited to the embodiment of Figs. 10 and 11.

Please refer to FIG. 12 . FIG. 1 is a schematic diagram of a stack structure of an in-cell touch display according to another embodiment of the present invention. The in-cell touch display 8 includes glass 801, 818, a gate line 802, a gate insulating layer 803, a channel layer 804, a data line 805, a protective layer 806, 810, a flat layer 807, a second display electrode 808, and a common electrode. The wire layer 809, the first touch electrode 811, the first display electrode 812, the liquid crystal layer 813, the insulating layer 814, the second touch electrode 815, and the flat layer 816 (formed by over-coating) and Color filter 817. In this embodiment, the glass 801, the gate line 802, the gate insulating layer 803, the channel layer 804 and the data line 805 form a thin film transistor substrate, and the color filter 817 and the glass 818 form a color filter substrate. The liquid crystal layer 813 is located between the thin film transistor substrate and the color filter substrate.

The gate line 802 is located above the glass 801, and the plurality of gate lines 802 extend along the first axial direction (e.g., the X-axis) and are arranged in parallel with each other. The gate insulating layer 803 is over the gate line 802 and the channel layer 804 is over the gate insulating layer 803. The data lines 805 are located above the channel layer 804 and extend along a second axial direction (e.g., the Y-axis) while being aligned parallel to each other. Multiple data lines 805 and multiple gates The polar lines 802 cross each other on a plane to define a plurality of pixel regions. The protective layer 806 is above the data line 805 and the planar layer 807 is above the protective layer 806. In the embodiment of the present invention, the flat layer 807 can be removed, in other words, the presence or absence of the flat layer 807 is not intended to limit the present invention.

The second display electrode 808 is located above the flat layer 807. In this embodiment, the second display electrode 808 can be a patterned electrode including a plurality of block electrodes, and has a common electrode wire layer 809 thereon for connecting a plurality of block electrodes of the same row or the same column. The first touch electrode 811 or the second touch electrode 815 is avoided on the plane. In addition, if the second display electrode 808 is a plurality of pixel electrodes or a plurality of strip-shaped patterned common electrodes, the common electrode wiring layer 809 may be removed.

The protective layer 810 is located above the common electrode wire layer 809, and the first touch electrode 811 and the first display electrode 812 of the same layer are located above the electrode wire layer 809. The first display electrode 812 is a plurality of pixel electrodes in this embodiment, and the plurality of pixel electrodes are located in a plurality of pixel regions. The plurality of first touch electrodes 811 extend along the first axial direction and are arranged in parallel with each other. The first touch electrodes 811 can be, for example, metal electrodes or transparent conductive electrodes, and serve as touch drive electrodes.

The liquid crystal layer 813 is located above the first touch electrode 811 and the first display electrode 812 , and the insulating layer 814 is located above the liquid crystal layer 813 . A plurality of second touch electrodes 815 are located above the insulating layer 814 and have a flat layer 816 thereon. The plurality of second touch electrodes 815 extend along the second axial direction and are arranged parallel to each other. The second touch electrodes 815 can be, for example, metal electrodes or transparent conductive electrodes, and serve as a plurality of touch sensing electrodes. The color filter 817 is located above the flat layer 816 and the glass 818 is positioned above the color filter 817.

The in-cell touch display 8 can eliminate the liquid crystal display panel and the touch surface The in-line touch display 8 tends to be thinner and lighter with the assembly steps of the board and the extra glass. In addition, the in-cell touch display 8 can increase the signal variation of the touch sensing signal and improve the touch sensitivity of the in-cell touch display 8 .

It should be noted that the in-cell touch display 8 can be used for a transverse electric field effect, a wide viewing angle, and a twisted nematic liquid crystal display. In addition, in this embodiment, the second touch electrode 815 and the first touch electrode 811 are respectively superposed on the gate line 802 and the data line 805 on a plane. However, the present invention is not limited thereto, and is implemented in other implementations. For example, the second touch electrode 815 and the first touch electrode 811 avoid the gate line 802 and the data line 805 on the plane. In addition, the second display electrode 808 and the first display electrode 812 may be a pixel electrode and a patterned common electrode having a plurality of strip electrodes, respectively. In summary, the present invention is not limited to the embodiment of FIG.

Please refer to FIG. 13. FIG. 13 is a schematic diagram of a stack structure of an in-cell touch display according to another embodiment of the present invention. The in-cell touch display 9 includes glass 901, 917, a gate line 902, a gate insulating layer 903, a channel layer 904, a data line 905, a protective layer 906, 910, a flat layer 907, a first touch electrode and a common electrode. Wire layer 908, first display electrode 909, second display electrode 911, liquid crystal layer 912, insulating layer 913, second touch electrode 914, flat layer 915 (formed by over-coating) and color Filter 916. In this embodiment, the glass 901, the gate line 902, the gate insulating layer 903, the channel layer 904 and the data line 905 form a thin film transistor substrate, and the color filter 916 and the glass 917 form a color filter substrate. The liquid crystal layer 912 is located between the thin film transistor substrate and the color filter substrate.

The gate line 902 is located above the glass 901, and the plurality of gate lines 902 extend along the first axial direction (e.g., the X-axis) and are arranged in parallel with each other. Gate insulation 903 is above gate line 902 and channel layer 904 is above gate insulating layer 903. The data lines 905 are located above the channel layer 904 and extend along a second axial direction (e.g., the Y-axis) while being aligned parallel to each other. A plurality of data lines 905 and a plurality of gate lines cross each other on a plane to define a plurality of pixel regions. The protective layer 906 is above the data line 905 and the flat layer 907 is above the protective layer 906. In the embodiment of the present invention, the flat layer 907 can be removed, in other words, the presence or absence of the flat layer 907 is not intended to limit the present invention.

The first touch electrode and the common electrode wire layer 908 and the first display electrode 909 are located above the flat layer 907 and are located in the same layer with each other. In this embodiment, the first touch electrodes and the plurality of first touch electrodes in the common electrode lead layer 908 extend along the first axial direction and are arranged in parallel with each other, wherein the first touch electrodes may be, for example, metal electrodes. Or a transparent conductive electrode and as a touch drive electrode. The first display electrode 909 can be a patterned common electrode including a plurality of block electrodes to avoid the first touch electrode or the second touch electrode 914 of the first touch electrode and the common electrode wire layer 908 on a plane. The common electrode wires in the first touch electrode and the common electrode wire layer 908 are used to connect a plurality of bulk electrodes in the same column or in the same row. In addition, if the first display electrode 909 is a plurality of pixel electrodes or a plurality of strip-shaped patterned common electrodes, the wires of the first touch electrode and the common electrode wire layer 908 may be removed.

The protective layer 910 is located above the first touch electrode and the common electrode wire layer 908 and the first display electrode 909, the second display electrode 911 is located above the protective layer 910, and the liquid crystal layer 912 is located above the second display electrode 911. The second display electrode 911 may be a plurality of pixel electrodes in this embodiment, and the plurality of pixel electrodes are located in the plurality of pixel regions. The insulating layer 913 is located above the liquid crystal layer 912. The plurality of second touch electrodes 914 are located above the insulating layer 913 and have a flat layer 915 thereon. The plurality of second touch electrodes 914 extend along the second axial direction. The second touch electrodes 914 can be, for example, metal electrodes or transparent conductive electrodes, and serve as a plurality of touch sensing electrodes. The color filter 916 is located above the flat layer 915 and the glass 917 is located above the color filter 916.

The in-cell touch display 9 can eliminate the assembly steps of the liquid crystal display panel and the touch panel and the additional glass, so the in-cell touch display 9 tends to be light and thin. In addition, the in-cell touch display 9 can increase the signal variation of the touch sensing signal and improve the touch sensitivity of the in-cell touch display 9 .

It should be noted that the in-cell touch display 9 can be used for a transverse electric field effect, a wide viewing angle, and a twisted nematic liquid crystal display. In addition, in this embodiment, the second touch electrodes 914 and the first touch electrodes are respectively superposed on the gate lines 902 and the data lines 905 on the plane. However, the present invention is not limited thereto, and other embodiments are The second touch electrode 914 and the first touch electrode avoid the gate line 902 and the data line 905 on the plane. In addition, the second display electrode 911 and the first display electrode 909 may be patterned common electrodes and pixel electrodes having a plurality of strip electrodes, respectively. In summary, the present invention is not limited to the embodiment of FIG.

In addition, in order to make the parasitic capacitance of the liquid crystal display panel uniform. When the display is performed on the in-cell touch display, the Mura phenomenon is avoided. The embodiment of the present invention further provides an in-cell touch display having a plurality of dummy electrodes disposed between two adjacent sensing electrodes and two adjacent electrodes. Drive between the electrodes.

Please refer to FIG. 14, which is a plan view of an in-cell touch display according to another embodiment of the present invention. The in-cell touch display 5 includes a glass 501, a plurality of gate lines 502, a plurality of data lines 503, and a plurality of touch driving electrodes 504. a plurality of first dummy electrodes 505, a plurality of touch sensing electrodes 506, a plurality of second dummy electrodes 507, a plurality of pixel electrodes (not shown in FIG. 14), and a common electrode (not shown in FIG. 14).

The gate line 502 is located above the glass 501, and the plurality of gate lines 502 extend along the first axial direction (e.g., the X-axis) and are arranged in parallel with each other. The data line 502 is located above the glass 501. The plurality of data lines 502 extend along the second axial direction (for example, the Y axis) and are arranged in parallel with each other, and the plurality of data lines 405 and the plurality of gate lines 502 cross each other on a plane, and a plurality of pixel regions are defined. Set a plurality of pixel electrodes. The common electrode may be a common electrode of the entire layer or the aforementioned patterned common electrode.

The plurality of touch driving electrodes 504 extend along the first axial direction and are arranged in parallel with each other. The plurality of touch driving electrodes 504 can be, for example, metal electrodes or transparent conductive electrodes. The plurality of first dummy electrodes 505 extend along the first axial direction and are arranged parallel to each other, and at least one first dummy electrode 505 is disposed between any two adjacent touch driving electrodes 504.

The plurality of touch sensing electrodes 506 extend along the second axial direction and are arranged in parallel with each other. The plurality of touch sensing electrodes 506 can be, for example, metal electrodes or transparent conductive electrodes. The plurality of second dummy electrodes 507 extend along the second axial direction and are arranged in parallel with each other, and at least one second dummy electrode 507 is disposed between any two adjacent touch sensing electrodes 506 .

In addition, in this embodiment, the plurality of gate lines 502 are superimposed on the plurality of touch driving electrodes 504 and the plurality of first dummy electrodes 505 on the plane, and the plurality of data lines 503 are overlapped on the plurality of touches on the plane. The sensing electrode 506 is coupled to the plurality of second dummy electrodes 507.

Please refer to FIG. 15, which is a plan view of an in-cell touch display according to another embodiment of the present invention. In-cell touch display 6 includes glass 601 a plurality of gate lines 602, a plurality of data lines 603, a plurality of touch driving electrodes 604, a plurality of first dummy electrodes 605, a plurality of touch sensing electrodes 606, a plurality of second dummy electrodes 607, and a plurality of pixels Electrode (not shown in Figure 15) and common electrode (not shown in Figure 15).

The gate line 602 is located above the glass 601, and the plurality of gate lines 602 extend along the first axial direction (e.g., the X-axis) and are arranged in parallel with each other. The data line 602 is located above the glass 601. The plurality of data lines 602 extend along the second axial direction (for example, the Y axis) and are arranged in parallel with each other, and the plurality of data lines 605 and the plurality of gate lines 6502 cross each other on a plane, and a plurality of pixel regions are defined. Set a plurality of pixel electrodes. The common electrode may be a common electrode of the entire layer or the aforementioned patterned common electrode.

The plurality of touch driving electrodes 604 extend along the first axial direction and are arranged in parallel with each other. The plurality of touch driving electrodes 604 can be, for example, metal electrodes or transparent conductive electrodes. The plurality of first dummy electrodes 605 extend along the first axial direction and are arranged parallel to each other, and at least one first dummy electrode 605 is disposed between any two adjacent touch driving electrodes 604.

The plurality of touch sensing electrodes 606 extend along the second axial direction and are arranged in parallel with each other. The plurality of touch sensing electrodes 606 can be, for example, metal electrodes or transparent conductive electrodes. The plurality of second dummy electrodes 607 extend along the second axial direction and are arranged in parallel with each other, and at least one second dummy electrode 607 is disposed between any two adjacent touch sensing electrodes 606 .

In addition, in this embodiment, the plurality of gate lines 602 avoid the plurality of touch driving electrodes 604 and the plurality of first dummy electrodes 605 on the plane, and the plurality of data lines 603 avoid multiple touches on the plane. The sensing electrode 606 is coupled to the plurality of second dummy electrodes 607.

It is worth mentioning that each of the above embedded touch displays can be set to electricity. The sub-device is electrically connected to the electronic device body. In addition, the above electronic device may be, for example, a smart phone, a tablet computer, a portable game machine, a personal mobile assistant device, an automatic teller machine, or the like.

In summary, the in-cell touch display provided by the embodiment of the present invention has better sensing sensitivity, or it can reduce the unevenness of display brightness. In addition, because the in-cell touch display can have only two layers of glass, it is in line with the advantages of light weight and shortness of electronic products.

The above description is only an embodiment of the present invention, and is not intended to limit the scope of the invention.

1~9‧‧‧In-cell touch display

101, 115, 201, 215, 301, 316, 401, 414, 501, 601, 701, 715, 801, 818, 901, 917 ‧ ‧ glass

102, 202, 302, 402, 502, 602, 702, 802, 902‧‧ ‧ gate line

103, 203, 303, 403, 703, 803, 903 ‧ ‧ gate insulation

104, 204, 304, 404, 704, 804, 904‧‧‧ channel layer

105, 205, 305, 405, 503, 603, 705, 805, 905‧‧‧ data lines

106, 110, 206, 210, 306, 309, 311, 406, 409, 706, 709, 806, 810, 906, 910 ‧ ‧ protective layer

107, 207, 307, 407, 707, 713, 807, 816, 907, 915 ‧‧‧flat layer

108‧‧‧Second touch electrode and wire layer

908‧‧‧First touch electrode and common electrode layer

1081, 208, 716, 815, 914‧‧‧ second touch electrodes

504, 604‧‧‧ touch drive electrodes

505, 605‧‧‧ first virtual electrode

1082‧‧‧Wire

109, 209, 308, 408, 708, 808, 911 ‧ ‧ second display electrode

111, 211, 312, 410, 710, 811‧‧‧ first touch electrodes

506, 606‧‧‧ touch sensing electrodes

507, 607‧‧‧ second virtual electrode

112, 212, 313, 411, 711, 812, 909‧‧‧ first display electrodes

113, 213, 314, 412, 712, 813, 912‧‧ ‧ liquid crystal layer

114, 214, 315, 413, 714, 817, 916‧‧‧ color filters

809‧‧‧ Common electrode wire layer

814, 913‧‧‧ insulation

1 is a plan view of an in-cell touch display device according to an embodiment of the present invention.

2 is a schematic view showing a stack structure of an in-cell touch display device according to an embodiment of the invention.

3 is a partial cross-sectional view of an in-cell touch display device in accordance with an embodiment of the present invention.

4 is a plan view of an in-cell touch display according to another embodiment of the present invention.

FIG. 5 is a schematic diagram of a stack structure of an in-cell touch display according to another embodiment of the present invention.

6 is a plan view of an in-cell touch display according to another embodiment of the present invention.

FIG. 7 is a schematic diagram of a stack structure of an in-cell touch display according to another embodiment of the present invention.

FIG. 8 is a plan view of an in-cell touch display according to another embodiment of the present invention.

9 is a stack of an in-cell touch display according to another embodiment of the present invention; Schematic.

FIG. 10 is a schematic diagram showing a stack structure of an in-cell touch display according to another embodiment of the present invention.

11 is a plan view of an in-cell touch display according to another embodiment of the present invention.

FIG. 12 is a schematic diagram of a stack structure of an in-cell touch display according to another embodiment of the present invention.

FIG. 13 is a schematic diagram of a stack structure of an in-cell touch display according to another embodiment of the present invention.

Figure 14 is a plan view of an in-cell touch display in accordance with another embodiment of the present invention.

Figure 15 is a plan view of an in-cell touch display in accordance with another embodiment of the present invention.

1‧‧‧Inline touch display

101, 115‧‧‧ glass

102‧‧‧gate electrode

103‧‧‧ gate insulation

104‧‧‧Channel layer

105‧‧‧Data electrode

106, 110‧‧ ‧ protective layer

107‧‧‧flat layer

108‧‧‧Second touch electrode and wire layer

109‧‧‧First display electrode

111‧‧‧First touch electrode

112‧‧‧First display electrode

113‧‧‧Liquid layer

114‧‧‧Color filters

Claims (13)

An in-cell touch display comprising: a thin film transistor substrate comprising: a plurality of gate lines extending along a first axial direction and arranged in parallel with each other; and a plurality of data lines along a second axis Extending, parallel to each other, and insulated from the gate lines, the data lines and the gate lines are interleaved on a plane to define a plurality of pixel regions; a color filter substrate; a liquid crystal layer, located Between the thin film transistor substrate and the color filter substrate; a plurality of first touch electrodes located between the thin film transistor substrate and the liquid crystal layer and on the thin film transistor substrate along the first axial direction And extending along one of the second axes and arranged in parallel with each other; and a first display electrode insulated from the first touch electrodes and disposed in the same layer. The in-cell touch display of claim 1, further comprising: a second display electrode located between the first display electrode and the thin film transistor substrate, and the first touch electrodes, The first display electrode is insulated. The in-cell touch display of claim 2, further comprising: a plurality of second touch electrodes insulated from the second display electrode and disposed in the same layer. The in-cell touch display of claim 2, further comprising: a plurality of second touch electrodes located between the first display electrodes and the second display electrodes. The in-cell touch display of claim 2, further comprising: a controller electrically coupled to the second display electrode. The in-cell touch display of claim 5, wherein the first display electrode is a plurality of pixel electrodes, and the second display electrode receives a common electrode signal and a time division via the controller. The touch driving signals are respectively used as a common electrode and a touch driving electrode. The in-cell touch display of claim 5, wherein the first display electrode is a common electrode, and the second display electrode receives a display signal and a touch drive through the controller in a time division manner. The signals are used as a pixel electrode and a touch drive electrode, respectively. The in-cell touch display of claim 2, further comprising: a plurality of second touch electrodes located between the color filter substrate and the liquid crystal layer and on the liquid crystal layer. The in-cell touch display of claim 2, further comprising: a plurality of second touch electrodes disposed on the other side of the color filter substrate opposite to the liquid crystal layer. The in-cell touch display of claim 1, further comprising: a second display electrode located at the first display electrode and the liquid crystal layer The first touch electrodes and the first display electrodes are insulated from each other. The in-cell touch display of claim 10, further comprising: a plurality of second touch electrodes disposed between the color filter substrate and the liquid crystal layer and located on the liquid crystal layer. An in-cell touch display comprising: a plurality of gate lines extending along a first axial direction and arranged in parallel with each other; a plurality of data lines extending along a second axial direction and arranged in parallel with each other; Touch driving electrodes extending along the first axial direction and arranged in parallel with each other; a plurality of touch sensing electrodes extending along the second axial direction and arranged in parallel with each other; a plurality of first dummy electrodes, along The first axial extensions are arranged parallel to each other; and the plurality of second dummy electrodes extend along the second axial direction and are arranged parallel to each other; wherein at least one of the two adjacent touch drive electrodes is between A dummy electrode has at least one second dummy electrode between any two adjacent touch sensing electrodes. An electronic device comprising: an electronic device body; the in-cell touch display device according to any one of claims 1 to 12, wherein the in-cell touch display device is electrically connected Connected to the electronic device body.