TW201839569A - In-cell touch display panel - Google Patents

Abstract

An in-cell touch display panel including pixel units, touch sensing electrodes, N driving units, scan lines and touch traces is provided. The touch sensing electrodes are respectively disposed on touch regions. The touch regions are divided into M touch region groups disposed along a first direction. Each of the M touch region groups includes N touch regions disposed along a second direction. M ≥ 2, N ≥ 2, wherein M and N are positive integers. The N driving units are disposed on a peripheral region. Each of the scan lines extends along the second direction. The scan lines are sequentially arranged along the first direction. The N driving units include 1<SP>st</SP>-N<SP>th</SP> driving units. 1 ≤ n ≤ N, wherein n is a positive integer and the n<SP>th</SP> driving unit is electrically connected to (n+k*N)<SP>th</SP> scan line, wherein k is 0 and 1 to (M-1) of positive integers. The touch traces are electrically connected to the touch sensing electrodes.

Description

Embedded touch display panel

The present invention relates to a touch display panel, and more particularly to an in-cell touch display panel.

Because the touch panel has the advantages of user-friendly interface, it is widely used in various electronic products, especially portable electronic products, such as mobile phones and tablet computers. Generally speaking, electronic products have both touch and display functions, and can be called touch display devices. The touch display device includes an out-cell touch display device. The external touch display device includes a display panel and a touch panel attached to the display panel. The overall thickness of the external touch display device is thick, which is not conducive to the thinning of electronic products. Therefore, an integrated touch display device integrating a touch panel and a display panel has been developed.

Differentiated by structure, integrated touch display devices can be divided into in-cell and on-cell. The in-cell touch display device includes a full-in-cell touch display device. The touch sensing electrodes of the fully embedded touch display device can be integrated with existing components in the display panel. Therefore, in addition to the advantages of being thin, the fully embedded touch display device also has the advantage of low cost. However, due to the traditional layout of the existing components of the display panel, a fully embedded touch display device requires additional conductive layers for touch traces; or, if no additional conductive layers are used, touch traces It is not possible to arbitrarily distribute around the display area, and a touch display device with high touch resolution cannot be formed.

The invention provides an in-cell touch display device with excellent performance.

The in-cell touch display panel of the present invention has a plurality of touch areas and a peripheral area outside the touch areas. The in-cell touch display panel includes multiple pixel units, multiple touch sensing electrodes, N driving units, multiple scan lines, and multiple touch traces. A plurality of pixel units are disposed in a plurality of touch areas. The plurality of touch sensing electrodes are respectively disposed in the touch area. The plurality of touch areas are divided into M touch area groups arranged along the first direction, each touch area group includes N touch areas arranged along the second direction, and M and N are greater than or equal to 2 Positive integer, the first direction intersects the second direction. N driving units are arranged in the peripheral area. Multiple scan lines are arranged in multiple touch areas. Each scan line extends in a second direction. The plurality of scan lines are sequentially arranged along the first direction. The N driving units include the first to N driving units. Nth drive unit and Scan lines are electrically connected, and k is 0 and 1 ～ A positive integer, , N is a positive integer. The multiple touch traces are arranged in multiple touch areas and are electrically connected to multiple touch sensing electrodes.

Based on the foregoing, an in-cell touch display panel according to an embodiment of the present invention includes N driving units, and the electrical connection relationship between the N driving units and the plurality of scanning lines is based on the configuration of a plurality of touch sensing electrodes, respectively. The multiple touch areas are distributed in different ways. Thereby, there will be enough space around the in-cell touch display panel for touch wiring setting, thereby realizing the in-cell touch display panel with high touch resolution.

In order to make the above features and advantages of the present invention more comprehensible, embodiments are hereinafter described in detail with reference to the accompanying drawings.

FIG. 1 is a schematic cross-sectional view of an in-cell touch display panel according to an embodiment of the present invention. Referring to FIG. 1, the in-cell touch display panel 1000 includes a pixel and touch substrate 100, an opposite substrate 200, and a display medium 300. The opposite substrate 200 is disposed opposite to the pixel and touch substrate 100. The display medium 300 is disposed between the opposite substrate 200 and the pixel and touch substrate 100. In this embodiment, the display medium 300 is, for example, a liquid crystal. However, the present invention is not limited to this. In other embodiments, the display medium 300 may also be other suitable materials, such as: Organic Light Emitting Diode (OLED).

FIG. 2 is a schematic top view of a pixel and a touch substrate of an in-cell touch display panel according to an embodiment of the present invention. Please refer to FIG. 2. The pixel and touch substrate 100 includes a substrate 10, a plurality of pixel units 110, a plurality of touch sensing electrodes 120, a plurality of driving units SR, a plurality of scanning lines GL, and a plurality of touch lines. TL. The pixel and touch substrate 100 further includes a plurality of data lines DL1 to DL6. The extension direction (for example, the first direction d1) of the data lines DL1 to DL6 is different from the extension direction (for example, the second direction d2) of the scanning line GL. The pixel unit 110, the touch sensing electrode 120, the driving unit SR, the scanning lines GL, the data lines DL1 to DL6 and the touch lines TL are disposed on the substrate 10.

Referring to FIG. 2, the substrate 10 has a plurality of touch areas 10 a and a peripheral area 10 b outside the touch areas 10 a. The plurality of touch areas 10a are divided into M touch area groups GP arranged along the first direction d1. Each touch area group GP includes N touch areas 10a arranged along the second direction d2. M and N are positive integers greater than or equal to two. Taking FIG. 2 as an example, in this embodiment, M = 4, N = 3, the plurality of touch areas 10a are divided into four touch area groups GP1 to GP4 arranged along the first direction d1, and each touch The control area group GP includes three touch areas 10a-1, 10a-2, and 10a-3 arranged along the second direction d2. However, the present invention is not limited to this. The values of M and N may depend on the actual size of the substrate 10 and the required touch resolution. In other embodiments, M and / or N may also be other appropriate values.

The plurality of touch areas 10a are divided into M touch area groups GP arranged along the first direction d1, and each touch area group GP includes N touch areas 10a-1, 10a arranged along the second direction d2. -2, 10a-3, the first direction d1 intersects the second direction d2. In this embodiment, the first direction d1 and the second direction d2 may be two straight directions that are perpendicular to each other. For example, in this embodiment, the plurality of touch areas 10a may be arranged Array. However, the present invention is not limited to this. In other embodiments, the plurality of touch areas 10a may be arranged in an offset manner, not necessarily in the row direction (eg, the first direction d1) and / or the column direction (eg, the first direction d2) Align up.

The plurality of pixel units 110 are disposed in the plurality of touch areas 10a. In detail, in this embodiment, a plurality of pixel units 110 may be provided in a single touch area 10a, but the present invention is not limited thereto. The number of pixel units 110 provided in each touch area 10a depends on the required touch resolution and the required display resolution, which is not limited in the present invention. 3 is a schematic cross-sectional view of a pixel and a touch substrate of an in-cell touch display panel according to an embodiment of the present invention. In particular, Fig. 3 corresponds to the section lines A-A ', B-B', and C-C 'of Fig. 2. Please refer to FIG. 2 and FIG. 3. In this embodiment, each pixel unit 110 may include a thin film transistor T and a pixel electrode 112. The thin film transistor T has a channel CH, a gate G, and a source S and a drain D which are electrically connected to two different regions of the channel CH, respectively. The source S is electrically connected to the data line DL. The gate G is electrically connected to the scanning line GL. The drain electrode D is electrically connected to the pixel electrode 112. As shown in FIG. 3, in this embodiment, the gate G may be located between the channel CH and the substrate 10. For example, the thin film transistor T in this embodiment may be a bottom gate type thin film transistor (bottom gate TFT). However, the present invention is not limited to this. In other embodiments, the thin film transistor T may also be a top gate thin film transistor (top gate TFT), a double gate thin film transistor (dual gate TFT), or other appropriate types. Thin film transistor.

In addition, in this embodiment, the gate electrode G and the scan line GL may be selectively formed by the first conductive layer. An insulating layer 130 may be provided between the first conductive layer and the channel CH. The source S, the drain D, and the data lines DL1 to DL6 can be selectively formed by the second conductive layer. The insulating layers 140 and 150 cover the second conductive layer. The pixel electrode 112 may be selectively disposed on the insulating layers 140 and 150 and is electrically connected to the drain electrode D through the contact windows 140 a and 150 a of the insulating layers 140 and 150. Based on the consideration of conductivity, the first conductive layer and / or the second conductive layer is generally made of a metal material. However, the present invention is not limited to this. In other embodiments, the first conductive layer and / or the second conductive layer may also use other conductive materials (for example, alloys, nitrides of metal materials, oxides of metal materials). , Nitrogen oxides of metal materials, or stacked layers of metal materials and other conductive materials). The pixel electrode 112 is, for example, a transparent conductive layer, and the transparent conductive layer includes a metal oxide (for example, indium tin oxide, indium zinc oxide, aluminum tin oxide, aluminum zinc oxide, indium germanium zinc oxide, or other suitable Oxide, or a stacked layer of at least two of the above). However, the present invention is not limited to this. In other embodiments, the pixel electrode 112 may also be a reflective conductive layer.

Please refer to FIG. 2. In this embodiment, at least two touch lines TL1 to TL1 to DL1 to DL2, DL2 to DL3, DL3 to DL4, DL4 to DL5, or DL5 to DL6 may be disposed between two adjacent data lines. TL2, TL3 to TL4, TL5 to TL6, TL7 to TL8, or TL9 to TL10. Please refer to FIG. 2 and FIG. 3, the touch trace TL and the data lines DL1 to DL6 may both be formed by the second conductive layer. Furthermore, in this embodiment, the pixel and touch substrate 100 may adopt one-third source driving (OTSD) architecture. Under the OTSD architecture, the three pixel units 110 can share one data line DL1, DL2, DL3, DL4, DL5, or DL6, thereby reducing the number of configuration of the data lines DL1 to DL6. Thereby, the space where the data lines are originally provided can be used to set the touch trace TL without using an additional conductive layer (for example, other conductive layers outside the second conductive layer) to form the touch trace TL. However, the present invention is not limited to this. In other embodiments, the pixel and touch substrate 100 may not adopt the OTSD structure, but adopt other appropriate structures.

Referring to FIG. 2, the plurality of touch sensing electrodes 120 are separated from each other and are electrically independent. The plurality of touch sensing electrodes 120 are respectively disposed on Touch areas 10a. For example, the pixel and touch substrate 100 may include Touch sensing electrodes 120. For example, in this embodiment, N = 3 and M = 4, and the pixel and touch substrate 100 may include 12 touch sensing electrodes 120. However, the present invention is not limited to this. The number of the touch sensing electrodes 120 (or the values of N and M) depends on the required touch resolution. In other embodiments, N and / or M may be For other appropriate values.

Please refer to FIG. 2 and FIG. 3. In this embodiment, in addition to the touch-sensing electrode 120 as a touch-sensing pad, the touch-sensing electrode 120 can also be used as a display common electrode. For example, the in-cell touch display panel 1000 can perform touch sensing actions and display actions during alternate touch periods and display periods respectively; during the touch period, the touch sensing electrodes 120 are used to detect Touch position; during the display period, the touch sensing electrode 120 is used as a common electrode, and the voltage difference between the touch sensing electrode 120 and the pixel electrode 112 is used to drive the display medium 300, thereby enabling the in-cell touch The display panel 1000 displays a screen. However, the present invention is not limited to this. In other embodiments, the touch sensing electrode 120 may also be used to detect a touch position instead of being used as a common electrode for display.

Referring to FIG. 3, in this embodiment, the insulating layer 150 may be disposed between the pixel electrode 112 and the touch sensing electrode 120. Furthermore, in this embodiment, the pixel electrode 112 may be disposed above the touch sensing electrode 120. However, the present invention is not limited thereto. In other embodiments, the touch sensing electrode 120 may be disposed above the pixel electrode 112. In addition, in this embodiment, one of the pixel electrode 112 and the touch sensing electrode 120 (eg, the pixel electrode 112) has a plurality of openings 112a, and the plurality of openings 112a and the pixel electrode 112 and touch sensing The other electrode (for example, the touch sensing electrode 120) overlaps. During the display period, a fringe electric field between the pixel electrode 112 and the touch sensing electrode 120 can drive the display medium 300, so that the in-cell touch display panel 1000 displays a picture. In short, the in-cell touch display panel 1000 of this embodiment may be a display panel in Fringe-Field Switching (FFS) mode. However, the present invention is not limited to this. In other embodiments, the in-cell touch display panel 1000 may also be a display panel in another suitable mode, and / or at least one of the pixel electrode 112 and the touch sensing electrode 120 is not. Be sure to have an opening 112a.

Referring to FIG. 2, N driving units SR are disposed in the peripheral region 10 b. Each driving unit SR is electrically connected to a corresponding plurality of scanning lines GL. For example, the driving unit SR is a gate driver. In this embodiment, the manufacturing process of the driving unit SR and the manufacturing process of the pixel unit 110 may be integrated together, and the driving unit SR may be a gate driver on array (GOA) circuit; further, the driving unit SR may be a mobile Bit register; but the invention is not limited to this.

Referring to FIG. 2, a plurality of scan lines GL are disposed in a plurality of touch areas 10 a. Each scanning line GL extends in the second direction d2. The plurality of scanning lines GL1 to GL12 are sequentially arranged along the first direction d1. The N driving units SR include first to N driving units SR1 to SR3 which are sequentially arranged along the second direction d2. The nth drive unit SR and The scanning lines GL are electrically connected, and k is 0 and 1 ～ A positive integer, , N is a positive integer. For example, in this embodiment, N = 3, M = 4; the first driving unit SR1 is electrically connected to the first, fourth, seventh, and tenth scanning lines GL1, GL4, GL7, and GL10, and the second The driving unit SR2 is electrically connected to the second, fifth, eighth, and eleven scanning lines GL2, GL5, GL8, and GL11, and the third driving unit SR3 is electrically connected to the third, sixth, ninth, and twelfth scanning lines GL3, GL6, and GL9. GL12 is electrically connected. The first, fourth, seventh, and tenth scanning lines GL1, GL4, GL7, and GL10 constitute the first scanning line group, and the second, fifth, eighth, and eleventh scanning lines GL2, GL5, GL8, and GL11 constitute the second scanning line. Group, and the 3rd, 6th, 9th, and 12th scanning lines GL3, GL6, GL9, and GL12 constitute the third scanning line group. A plurality of scanning lines GL of the same scanning line group receive scanning signals at the same point in time, and the first to N scanning line groups sequentially receive scanning signals, thereby enabling corresponding multiple thin film transistors T to be turned on.

Please refer to FIG. 2. In this embodiment, the pixel and touch substrate 100 further includes a plurality of conversion wires CL1-CL12. The extension direction (for example, the first direction d1) of the extension lines CL1 to CL12 is different from the extension direction (for example, the second direction d2) of the scanning line GL. The N driving units SR are electrically connected to the scanning lines GL through the transfer lines CL1 to CL12. Please refer to FIG. 2 and FIG. 3. In this embodiment, the transfer lines CL1 to CL12 may be formed by the second conductive layer and disposed on the insulating layer 130, and each transfer line (one of CL1 to CL12) The contact window 130a that can pass through the insulating layer 130 is electrically connected to a corresponding one of the scan lines GL, but the present invention is not limited thereto.

In this embodiment, the plurality of scanning lines GL may be divided into a plurality of scanning line groups. The plurality of scanning lines GL of the same scanning line group are electrically connected to a single driving unit SR1, SR2, or SR3. CL12 can be divided into multiple patch cord groups corresponding to multiple scan line groups. Multiple patch cords CL1 to CL4, CL5 to CL8, or CL9 to CL12 of each patch cord group are electrically connected to a single drive unit SR1. , SR2 or SR3 and a plurality of scanning lines GL corresponding to one scanning line group. For example, multiple scan lines GL can be divided into 1 to 3 scan line groups, and multiple extension cables CL can be divided into 1 to 3 extension lines corresponding to the 1 to 3 scan line groups, respectively. Group, in which the plurality of scanning lines GL1, GL4, GL7, and GL10 of the first scanning line group are electrically connected to the first driving unit SR1, and the plurality of conversion wires CL1 to CL4 of the first conversion wiring group are respectively electrically connected It is electrically connected between the first driving unit SR1 and the plurality of scanning lines GL1, GL4, GL7, GL10 of the first scanning line group, that is, the first transfer line CL1 is electrically connected to the first driving unit SR1 and Between the scanning lines GL1, the second transfer line CL2 is electrically connected between the first drive unit SR1 and the scan line GL4, and the third transfer line CL3 is electrically connected between the first drive unit SR1 and the scan line Between GL7, the fourth transfer line CL4 is electrically connected between the first drive unit SR1 and the scan line GL10; the multiple scan lines GL2, GL5, GL8, GL11 and the second of the second scan line group The drive unit SR2 is electrically connected, and the multiple transfer lines CL5 to CL8 of the second transfer line group are electrically connected to the multiple scan lines GL2, GL5, and GL2 of the second drive unit SR2 and the second scan line group, respectively. GL8 Between GL11, the fifth transfer line CL5 is electrically connected between the second drive unit SR2 and the scan line GL2, and the sixth transfer line CL6 is electrically connected between the second drive unit SR2 and the scan line GL5 Between them, the seventh transfer line CL7 is electrically connected between the second drive unit SR2 and the scan line GL8, and the eighth transfer line CL8 is electrically connected between the second drive unit SR2 and the scan line GL11 ; The multiple scan lines GL3, GL6, GL9, GL12 of the third scan line group are electrically connected to the third drive unit SR3, and the multiple transfer lines CL9 to CL12 of the third transfer line group are electrically connected respectively. Between the third driving unit SR3 and the plurality of scanning lines GL3, GL6, GL9, GL12 of the third scanning line group, that is, the ninth transfer line CL9 is electrically connected to the third driving unit SR3 and the scanning line Between GL3, the tenth transfer line CL10 is electrically connected between the third drive unit SR3 and the scan line GL6, and the eleventh transfer line CL11 is electrically connected between the third drive unit SR3 and the scan line GL9. Meanwhile, the twelfth transfer line CL12 is electrically connected between the third drive unit SR3 and the scan line GL12.

In this embodiment, each of the touch area groups GP includes the first to N touch areas 10a-1 to 10a-3 which are sequentially arranged along the second direction d2, and multiple transitions of the same transfer wiring group The lines CL1 to CL4, CL5 to CL8, or CL9 to CL12 overlap the nth touch area 10a of each touch area group GP. For example, the multiple patch cables CL1 to CL4 of the first patch cable group and the first touch area 10a-1 of the touch area group GP1 and the first touch area 10a of the touch area group GP2 -1, the first touch area 10a-1 of the touch area group GP3 and the first touch area 10a-1 of the touch area group GP4 overlap; the multiple extension cables CL5 of the second extension cable group ～ CL8 and the second touch area 10a-2 of the touch area group GP1, the second touch area 10a-2 of the touch area group GP2, and the second touch area 10a-2 of the touch area group GP3 And the second touch area 10a-2 of the touch area group GP4; the multiple extension cables CL9 to CL12 of the third extension line group and the third touch area 10a-3 of the touch area group GP1 The third touch area 10a-3 of the touch area group GP2, the third touch area 10a-3 of the touch area group GP3, and the third touch area 10a-3 of the touch area group GP4 overlap.

The plurality of touch traces TL1 to TL12 are respectively disposed in the plurality of touch areas 10 a and are electrically connected to the plurality of touch sensing electrodes 120. The plurality of touch traces TL1 to TL12 can be separated from each other and electrically independent, and each touch sensing electrode 120 is electrically connected to a corresponding touch trace (one of TL1 to TL12). In this embodiment, multiple touch traces TL1 to TL12 can be divided into multiple touch trace groups, and multiple touch traces TL1 to TL4, TL5 to TL8, or TL9 to TL12 of a single touch trace group. It overlaps with the nth touch area 10a of each touch area group GP1 to GP4. For example, multiple touch traces TL1 to TL4, TL5 to TL8, or TL9 to TL12 of a single touch trace group are electrically connected to a plurality of touch sensing electrodes 120 located in the same row. For example, the multiple touch traces TL1 to TL4 of the first touch trace group, the first touch area 10a-1 of the touch area group GP1, and the first touch of the touch area group GP2 Area 10a-1, the first touch area 10a-1 of the touch area group GP3, and the first touch area 10a-1 of the touch area group GP4 overlap, and multiple touches of the first touch routing group The traces TL1 to TL4 are electrically connected to the plurality of touch sensing electrodes 120 located in the first row; the multiple touch traces TL5 to TL8 of the second touch trace group and the first of the touch area group GP1 2 touch areas 10a-2, second touch area 10a-2 of touch area group GP2, second touch area 10a-2 of touch area group GP3, and second touch area group GP4 The touch areas 10a-2 overlap, and the multiple touch traces TL5 to TL8 of the second touch trace group are respectively electrically connected to the multiple touch sensing electrodes 120 located in the second row; the third touch trace Multiple touch traces TL9 ~ TL12 of the line group and the third touch area 10a-3 of the touch area group GP1, the third touch area 10a-3 of the touch area group GP2, and the touch area group GP3 The third touch area 10a-3 of the first touch area and the third touch area 10a-3 of the touch area group GP4 overlap, and the multiple touch lines TL9 to TL12 of the third touch line group are respectively located at The plurality of touch sensing electrodes 120 in the third row are electrically connected.

In this embodiment, each touch area group GP includes an n-th touch area 10a, and a plurality of n-th touch areas 10a of the touch area groups GP1 to GP4 are respectively provided along the first direction d1. The first to M touch sensing electrodes 120 are arranged in sequence, and the single touch trace group includes the first to M touch traces sequentially arranged along the second direction d2. The m-th touch trace TL overlaps the m-th touch sensing electrode 120 to the M-th touch sensing electrode 120 to be electrically connected to the m-th touch sensing electrode 120, , M is a positive integer. For example, the first to fourth touch sensing electrodes 120 sequentially arranged along the first direction d1 are respectively disposed in the plurality of first touch areas 10a-1 of the plurality of touch area groups GP1 to GP4. -1 to 120-4, where the first touch sensing electrode 120-1 is set in the first touch area 10a-1 of the touch area group GP1, and the first touch area of the touch area group GP2 A second touch sensing electrode 120-2 is provided in 10a-1, and a third touch sensing electrode 120-3 is provided in the first touch area 10a-1 of the touch area group GP3. A fourth touch sensing electrode 120-4 is provided in the first touch area 10a-1 of the block group GP4. The first touch wiring group includes first to second rows sequentially arranged along the second direction d2. 4 touch traces TL1 to TL4, the first touch trace TL1 of the first touch trace group and the first touch sensing electrode 120-1 to the fourth touch sensing electrode 120- 4 overlaps to be electrically connected to the first touch sensing electrode 120; the second touch trace TL2 of the first touch trace group and the second touch sensing electrodes 120-2 to 4 The two touch sensing electrodes 120-4 overlap to be electrically connected to the second touch sensing electrode 120, in which the second touch trace of the first touch trace group TL2 cannot overlap the first touch sensing electrode 120-1; the third touch trace TL3 of the first touch trace group and the third touch sensing electrode 120-3 to the fourth touch The control sensing electrode 120-4 overlaps to be electrically connected to the third touch sensing electrode 120-3. The third touch trace TL3 of the first touch trace group cannot be connected to the first touch. The control sensing electrode 120-1 and the second touch sensing electrode 120-2 overlap; ... and so on.

Referring to FIG. 2, in this embodiment, the plurality of transition lines CL1 to CL12 can be substantially aligned with the plurality of touch lines TL1 to TL12 in the first direction d1, respectively. Thereby, the transfer lines CL1 to CL12, the touch lines TL1 to TL12, and the data lines DL1 to DL6 formed by using the second conductive layer can be more closely arranged, and the in-cell touch display panel 1000 is further improved. Touch resolution and / or display resolution.

FIG. 4 is a schematic top view of a pixel of a built-in touch display panel and a part of a touch substrate according to another embodiment of the present invention. FIG. 5 is a display operation waveform diagram of the pixel and touch substrate of FIG. 4. The pixel and touch substrate 100A of FIG. 4 is similar to the pixel and touch substrate 100 of FIG. 2. Therefore, the same or corresponding components are represented by the same or corresponding reference numerals, but FIG. 4 more clearly illustrates each picture. The detailed components of the pixel unit 110 and the electrical connection relationship between the plurality of pixel units 110. The following uses FIG. 4 and FIG. 5 to explain what is a third source driving (OTSD) architecture.

Referring to FIG. 4, the pixel and touch substrate 100A includes a plurality of pixel units 110, and each pixel unit 110 includes at least a thin film transistor T and a storage capacitor C. Each data line DL1 or DL2 of the pixel and touch substrate 100A transmits the display data of the three pixel units 110 in a zigzag path. For example, the data line DL1 is used to transmit the display data to the pixel units P1, P2, and P3. The first terminal of the thin film transistor T of the pixel unit P3 is electrically connected to the data line DL1, and the second terminal of the thin film transistor T of the pixel unit P3 is electrically connected to the storage capacitor C of the pixel unit P3, the pixel unit The control terminal of the thin film transistor T of P3 is electrically connected to the scanning line GL3. The first terminal of the thin film transistor T of the pixel unit P2 is electrically connected to the second terminal of the thin film transistor T of the pixel unit P3, and the second terminal of the thin film transistor T of the pixel unit P2 is electrically connected to the pixel. The storage capacitor C of the unit P2 and the control terminal of the thin film transistor T of the pixel unit P2 are electrically connected to the scanning line GL2. The first terminal of the thin film transistor T of the pixel unit P1 is electrically connected to the second terminal of the thin film transistor T of the pixel unit P2, and the second terminal of the thin film transistor T of the pixel unit P1 is electrically connected to the pixel The storage capacitor C of the unit P1 and the control terminal of the thin film transistor T of the pixel unit P1 are electrically connected to the scanning line GL1. The other pixel units P4 to P6, P7 to P9, and other pixel units that are not labeled are also electrically connected in a corresponding manner.

Please refer to FIG. 4 and FIG. 5. During the period t1, the display data is written into the pixel unit P1, and the scanning lines GL1, GL2, and GL3 are turned on (that is, the signal is at a logic high level), and the display data passes through the data line DL1. The thin film transistor T of the pixel unit P3, the thin film transistor T of the pixel unit P2, and the thin film transistor T of the pixel unit P1 are transferred to the storage capacitor C of the pixel unit P1. At period t2, the display data is written into the pixel unit P2, and the scanning lines GL2 and GL3 are turned on. The display data is transmitted to the thin film transistor T of the pixel unit P3 and the thin film transistor T of the pixel unit P2 via the data line DL1, The storage capacitor C of the pixel unit P2. At period t3, the display data is written into the pixel unit P3, the scanning line GL3 is turned on, and the display data is transmitted to the storage capacitor C of the pixel unit P3 through the data line DL1 and the thin film transistor T of the pixel unit P3.

As shown in FIG. 5, the pixel unit P1 is affected by three feed-through voltages ΔVf11, △ Vf12, and △ Vf13. The coupling capacitance of the control terminal and the second terminal of the thin film transistor T of the pixel unit P1, P2, and P3 The values are Cgd1, Cgd2, Cgd3, the total capacitance values of the pixel units P1, P2, and P3 are Ctt1, Ctt2, and Ctt3, and the driving high and low voltages of the scanning line GL are Vgh and Vgl, respectively. The feedthrough voltage △ Vf1 can be expressed as equation (1): Formula 1). The pixel unit P2 is affected by the secondary feedthrough voltages △ Vf21 and △ Vf22. The feedthrough voltage △ Vf2 of the pixel unit P2 can be expressed as equation (2): Equation (2). The pixel unit P3 is affected by the primary feedthrough voltage △ Vf31. The feedthrough voltage △ Vf3 of the pixel unit P1 can be expressed as equation (3): Equation (3). Thereby, the pixel units P1 to P3 can be driven. Similarly, using the above driving method, the pixel units P4 ~ P6, P7 ~ P9 can also be driven, and then all the pixel units 110 of the pixel and touch substrate 100A are displayed to display the picture. The description should be implemented and will not be repeated here. In addition, in the embodiment of FIG. 5, the plurality of pixel units 110 may display red, green, and blue, but the present invention is not limited thereto. In other embodiments, the plurality of pixel units 110 may also display red, A combination of green, blue, and white or other appropriate colors.

In summary, an in-cell touch display panel according to an embodiment of the present invention has a plurality of touch areas and a plurality of peripheral areas outside the touch areas. The in-cell touch display panel includes multiple pixel units, multiple touch sensing electrodes, N driving units, multiple scan lines, and multiple touch traces. The plurality of touch sensing electrodes are respectively disposed in a plurality of touch areas. The plurality of touch areas are divided into M touch area groups arranged along the first direction. Each touch area group includes N touch areas arranged along the second direction. The N driving units include the first to N driving units. Nth drive unit and Scan lines are electrically connected, and k is 0 and 1 ～ A positive integer, , N is a positive integer. Thereby, there will be enough space around the in-cell touch display panel for touch wiring setting, thereby realizing the in-cell touch display panel with high touch resolution.

In addition, in one embodiment of the present invention, the existing second conductive layer can be used to form the touch traces of the in-cell touch display panel without using an additional conductive layer to form the touch traces. Thereby, the in-cell touch display panel can have both advantages of high touch resolution and low cost.

Although the present invention has been disclosed as above with the examples, it is not intended to limit the present invention. Any person with ordinary knowledge in the technical field can make some modifications and retouching without departing from the spirit and scope of the present invention. The protection scope of the present invention shall be determined by the scope of the attached patent application.

10‧‧‧ substrate

10a, 10a-1 ～ 10a-3‧‧‧Touch area

10b‧‧‧Peripheral area

100, 100A‧‧‧ pixels and touch substrate

110 、 P1 ～ P9‧‧‧Pixel unit

112‧‧‧pixel electrode

112a‧‧‧ opening

120、120-1 ～ 120-4‧‧‧Touch sensing electrode

130, 140, 150‧‧‧ Insulation

130a, 140a, 150a‧‧‧ contact window

200‧‧‧ Opposite substrate

300‧‧‧Display media

1000‧‧‧ Embedded touch display panel

A-A ’, B-B’, C-C’‧‧‧ hatched

C‧‧‧Storage capacitor

CL1 ～ CL12‧‧‧Transfer wiring

CH‧‧‧channel

D‧‧‧ Drain

DL1 ～ DL6‧‧‧ Data Line

d1, d2‧‧‧ direction

G‧‧‧Gate

GL, GL1 ～ GL12‧‧‧scan line

GP, GP1 ～ GP4‧‧‧touch area group

S‧‧‧Source

SR, SR1 ～ SR3‧‧‧Drive unit

T‧‧‧ thin film transistor

t1, t2, t3‧‧‧

TL, TL1 ～ TL12‧‧‧touching wiring

△ Vf11, △ Vf12, △ Vf13, △ Vf21, △ Vf22, △ Vf31‧‧‧feed-through voltage

FIG. 1 is a schematic cross-sectional view of an in-cell touch display panel according to an embodiment of the present invention. FIG. 2 is a schematic top view of a pixel and a touch substrate of an in-cell touch display panel according to an embodiment of the present invention. 3 is a schematic cross-sectional view of a pixel and a touch substrate of an in-cell touch display panel according to an embodiment of the present invention. FIG. 4 is a schematic top view of a pixel of a built-in touch display panel and a part of a touch substrate according to another embodiment of the present invention. FIG. 5 is a display operation waveform diagram of the pixel and touch substrate of FIG. 4.

Claims (10)

An in-cell touch display panel having a plurality of touch areas and a peripheral area outside the touch areas. The in-cell touch display panel includes: a plurality of pixel units arranged in the touch areas; A plurality of touch sensing electrodes are respectively arranged on the touch areas, wherein the touch areas are divided into M touch area groups arranged along a first direction, and each touch area group includes along a N touch areas arranged in the second direction, M and N are positive integers greater than or equal to 2, the first direction intersects the second direction; N driving units are disposed in the peripheral area; multiple scanning lines, The scan lines are sequentially arranged along the first direction. The N driving units include the first to N driving units, where the nth driving unit and the Scan lines are electrically connected, and k contains 0 and 1 ～ A positive integer, , N is a positive integer; and a plurality of touch traces are electrically connected to the touch sensing electrodes, respectively. The in-cell touch display panel according to item 1 of the scope of patent application, further includes: a plurality of extension cables, the extension directions of the extension cables are different from the extension directions of the scanning lines, and the N drivers The unit is electrically connected to the corresponding scanning lines through the transfer lines. According to the in-cell touch display panel described in item 2 of the scope of patent application, the scan lines are divided into a plurality of scan line groups, and the scan lines of the same scan line group are electrically connected to the same driving unit. The patch cord is divided into a plurality of patch cord groups corresponding to the scan line groups, and the patch cords of the same patch cord group are electrically connected between the same drive unit and the corresponding scan lines. The in-cell touch display panel according to item 3 of the scope of patent application, wherein at least one of the plurality of extension wires of the same extension wire group overlaps with at least one touch area. The in-cell touch display panel according to item 4 of the scope of patent application, wherein the touch traces are divided into a plurality of touch trace groups, and one of the touch traces in the same touch trace group One does not overlap with any of the extension cables. The in-cell touch display panel according to item 5 of the scope of patent application, wherein each of the touch area groups includes an n-th touch area, and the touch area groups correspond to the n-th touch areas. The first to M touch sensing electrodes are sequentially arranged along the first direction, and the same touch trace group includes the first to M touch traces sequentially arranged along the second direction. Line, the mth touch trace of the same touch trace group overlaps the mth touch sensing electrode to the Mth touch sensing electrode, and the mth touch trace of the same touch trace group The touch trace is electrically connected to the mth touch sensing electrode, , M is a positive integer. The in-cell touch display panel according to item 2 of the scope of the patent application, wherein the transfer lines are substantially aligned with the touch lines in the first direction, respectively. The in-cell touch display panel according to item 2 of the scope of patent application, wherein the scan lines are formed by a first conductive layer, and the transition lines and the touch traces are performed by the same second conductive layer. Layers, the first conductive layer and the second conductive layer are different film layers. The in-cell touch display panel described in item 2 of the scope of patent application, further includes: a plurality of data lines electrically connected to the pixel units, wherein an extension direction of the data lines and the scanning lines are The extension directions are different, and the data lines, the transfer lines, and the touch traces are formed by the same second conductive layer. The in-cell touch display panel described in item 1 of the scope of patent application, further includes: a plurality of data lines electrically connected to the pixel units, wherein an extension direction of the data lines and the scanning lines are The extending directions are different, and at least two touch lines are arranged between two adjacent data lines.