TWI616790B - Touch Display Device - Google Patents

Abstract

A touch display device includes a substrate, a pixel array, a light-shielding pattern layer, and a touch electrode layer. The pixel array contains complex pixel units. The plurality of pixel units are arranged along the first direction, and each pixel unit includes a plurality of sub-pixels. The orthographic projection of the light-shielding pattern layer on the substrate is located at the junction of each sub-pixel. The orthographic projection of the touch electrode layer on the substrate overlaps the plurality of pixel units. The touch electrode layer includes a grid array. The grid array contains a plurality of grid cells. Each grid cell has a plurality of common portions, and any two adjacent grid cells are connected by a common portion. The orthographic projection of at least two common portions of each grid unit on the substrate and the orthographic projection of the light-shielding pattern layer on the substrate overlap.

Description

Touch display device

The invention relates to a touch display technology, in particular to a touch display device with a grid of touch electrodes.

In recent years, in order to achieve the purposes of portability and user-friendly operation, many electronic products have replaced the traditional keyboard or mouse with a touch panel as an input device. Among these electronic devices that integrate a touch panel as an input device, a touch display device having both touch and display functions is one of the modern high-profile products.

In conventional touch display devices, a transparent metal oxide material, such as indium tin oxide (ITO), is generally used to form a touch electrode layer for touch sensing to avoid the touch electrode layer from affecting the display effect. . However, indium is a rare metal, which is difficult to obtain and expensive, which is not conducive to competition in the market. Furthermore, indium tin oxide has problems such as easy yellowing, easy damage, inflexibility and high resistance. Therefore, in recent years, a metal mesh prepared with conductive thin wires has been developed to replace the traditionally used metal oxide materials.

However, although the metal wires of the metal grid are thin, the metal wires themselves are not transparent. Therefore, when the metal grid is bonded to the display panel, the metal grid and the pixel array of the display panel easily produce a visual effect of moire, which seriously affects the display effect of the touch display device.

In view of this, in one embodiment, a touch display device includes a substrate, a pixel array, a light-shielding pattern layer, and a touch electrode layer. The pixel array is disposed on the substrate. The pixel array includes a plurality of pixel units, and the pixel units are arranged in a first direction. Each pixel unit includes a plurality of sub-pixels. The orthographic projection of the light-shielding pattern layer on the substrate is located at the junction of each sub-pixel. The orthographic projection of the touch electrode layer on the substrate overlaps the plurality of pixel units. The touch electrode layer includes a grid array. The grid array includes a plurality of grid cells, each grid cell has a maximum width in the first direction, and the maximum width is between 0.9 and 1.1 pixel unit widths in the first direction.

In one embodiment, a touch display device includes a substrate, a pixel array, a light-shielding pattern layer, and a touch electrode layer. The pixel array is disposed on the substrate. The pixel array includes a plurality of pixel units, and the pixel units are arranged in a first direction. Each pixel unit includes a plurality of sub-pixels. The orthographic projection of the light-shielding pattern layer on the substrate is located at the junction of each sub-pixel. The orthographic projection of the touch electrode layer on the substrate overlaps the plurality of pixel units. The touch electrode layer includes a grid array. The grid array includes a plurality of grid cells. Each grid cell has a maximum width in the first direction, and the maximum width is between 1.3 and 1.4 pixel units in the first direction.

In an embodiment, a touch display device includes a substrate, a pixel array, a light-shielding pattern layer, and a touch electrode layer. The pixel array is disposed on the substrate. The pixel array includes a plurality of pixel units, and the pixel units are arranged in a first direction. Each pixel unit includes a plurality of sub-pixels. The orthographic projection of the light-shielding pattern layer on the substrate is located at the junction of each sub-pixel. The orthographic projection of the touch electrode layer on the substrate overlaps the plurality of pixel units. The touch electrode layer includes a grid array. The grid array includes a plurality of grid units, each grid unit has a maximum width in the first direction, and the maximum width is between 1.9 and 2.1 pixel units in the first direction.

In an embodiment, a touch display device includes a substrate, a pixel array, and a shading image. Layer and touch electrode layer. The pixel array is disposed on the substrate. The pixel array includes a plurality of pixel units, and the pixel units are arranged in a first direction. Each pixel unit includes a plurality of sub-pixels. The orthographic projection of the light-shielding pattern layer on the substrate is located at the junction of each sub-pixel. The orthographic projection of the touch electrode layer on the substrate overlaps the plurality of pixel units. The touch electrode layer includes a grid array. The grid array includes a plurality of grid cells, and each grid cell has a maximum width in the first direction, and the maximum width is between 3.9 and 4.1 pixel units in the first direction.

In summary, in the touch display device of the embodiment of the present invention, when the maximum length or the maximum width of each grid unit corresponds to about 1 pixel unit, 1.33 pixel units, 2 pixel units, or 4 When the size of the pixel unit is, the visibility of the moire of the touch display device 100 can be lowered. In addition, at least two of the plurality of common portions of each grid unit of the touch electrode layer are disposed corresponding to the light-shielding pattern layer, so that the at least two common portions of each grid unit have an orthographic projection and a light-shielding pattern on the substrate. The orthographic projection of the layers on the substrate can be overlapped, thereby reducing the visibility of the moire of the touch display device.

The detailed features and advantages of the present invention are described in detail in the following embodiments. The content is sufficient to enable any person skilled in the art to understand and implement the technical content of the present invention, and according to the content disclosed in this specification, the scope of patent applications and the drawings. Anyone skilled in the related art can easily understand the related objects and advantages of the present invention.

100‧‧‧ touch display device

110‧‧‧ substrate

120‧‧‧ pixel array

121‧‧‧ Pixel Unit

1211‧‧‧ sub pixels

130‧‧‧ light-shielding pattern layer

140‧‧‧Touch electrode layer

141‧‧‧Grid Array

142‧‧‧Grid cells

150‧‧‧ Opposite substrate

160‧‧‧Display media layer

170‧‧‧ Laminated substrate

180‧‧‧ Adhesive layer

C1‧‧‧ Common Department

D1‧‧‧ first direction

D2‧‧‧ Second direction

DL‧‧‧Data Line

E1‧‧‧Pixel electrode

E11‧‧‧Pixel electrode

E12‧‧‧Pixel electrode

L1‧‧‧Maximum width

L2‧‧‧Maximum length

M1‧‧‧active element

M11‧‧‧active element

M12‧‧‧active element

MP1‧‧‧Main Pixel Area

SL‧‧‧scan line

SP1‧‧‧time pixel area

T1‧‧‧ Cross Pattern

T11‧‧‧Gap

T12‧‧‧Connecting electrode

θ‧‧‧ angle

β‧‧‧ rotation angle

A1‧‧‧aligned axis

A2‧‧‧aligned axis

FIG. 1 is a schematic side structural view of a touch display panel according to a first embodiment of the present invention.

FIG. 2 is a schematic diagram of a first embodiment of a pixel array and a touch electrode layer.

FIG. 3 is a schematic diagram of an embodiment of a pixel unit in FIG. 2.

FIG. 4 is a schematic diagram of a second embodiment of the pixel array and the touch electrode layer.

FIG. 5 is a schematic diagram of an embodiment of a pixel unit in FIG. 4.

FIG. 6 is a schematic diagram of an embodiment of a grid unit.

FIG. 7 is a schematic diagram of a third embodiment of the pixel array and the touch electrode layer.

FIG. 8 is a schematic diagram of a fourth embodiment of the pixel array and the touch electrode layer.

FIG. 9 is a schematic diagram of a fifth embodiment of the pixel array and the touch electrode layer.

FIG. 10 is a schematic diagram showing the relationship between the maximum width of the main pixel area and the grid unit when it is a quadrangle, the rotation angle relative to the pixel array, and the Moire interference index.

FIG. 11 is a schematic diagram showing the relationship between the maximum width, the rotation angle with respect to the pixel array, and the Moire interference index when the grid unit is a quadrangle.

FIG. 12 is a schematic diagram showing that the touch electrode layer is rotated by 0.25 degrees with respect to the pixel array.

FIG. 13 is a schematic diagram of a touch electrode layer rotated by -0.25 degrees with respect to a pixel array.

FIG. 14 is a schematic diagram of a sixth embodiment of the pixel array and the touch electrode layer.

FIG. 15 is a schematic diagram of a seventh embodiment of the pixel array and the touch electrode layer.

FIG. 16 is a schematic diagram of the relationship between the maximum width of the main pixel area and the grid unit, the rotation angle relative to the pixel array, and the Moire interference index when the grid unit is circular.

FIG. 17 is a schematic diagram showing the relationship between the maximum width of a pixel unit including two sub-pixels and the grid unit being a quadrangle, the rotation angle relative to the pixel array, and the Moire interference index.

FIG. 18 is a schematic side structural view of a touch display panel according to a second embodiment of the present invention.

FIG. 19 is a schematic side structural view of a touch display panel according to a third embodiment of the present invention.

FIG. 1 is a schematic side structural view of a touch display panel according to a first embodiment of the present invention. 2 and FIG. 2 is a schematic diagram of a first embodiment of a pixel array and a touch electrode layer. Referring to FIGS. 1-2, the touch display device 100 includes a substrate 110, a pixel array 120, a light-shielding pattern layer 130, and a touch electrode layer 140. The pixel array 120 is disposed on the substrate 110, and the light-shielding pattern layer 130 and the touch electrode layer 140 are disposed corresponding to the pixel array 120. In some embodiments, the substrate 110 may be made of a transparent substrate, such as a glass substrate, a plastic substrate, a quartz substrate, or other suitable materials.

The pixel array 120 includes a plurality of pixel units 121. The pixel units 121 may be arranged in a matrix having a plurality of pixel columns along the first direction D1, and each pixel unit 121 includes a plurality of sub-pixels 1211 sequentially arranged along the first direction D1. In one embodiment, each pixel unit 121 may use a stripe pixel arrangement to configure a plurality of sub-pixels 1211. In other words, each pixel unit 121 may be composed of three sub-pixels 1211 at this time, as shown in FIG. 2. In another embodiment, each pixel unit 121 may use a sub-pixel rendering arrangement to configure a plurality of sub-pixels 1211. In other words, each pixel unit 121 may be composed of two sub-pixels 1211 at this time. In some embodiments, the shape of each sub-pixel 1211 may be rectangular. However, the present invention is not limited to this, and the shape of each sub-pixel 1211 can also take on a special shape according to design requirements, for example, a "呈现" shape.

The light-shielding pattern layer 130 may be referred to as a black matrix, and may be used to shield a light leakage phenomenon between the sub-pixels 1211 or an area in the pixel array 120 that is not used for display. Therefore, the light-shielding pattern layer 130 can be disposed relative to the pixel array 120, and the orthographic projection of the light-shielding pattern layer 130 on the substrate 110 can be located at the junction between the sub-pixels 1211 to shield the pixel array 120 from being displayed. region. In some embodiments, the material of the light-shielding pattern layer 130 may be a black photoresist material or an inorganic material, such as a metal with low reflectivity (such as chromium, nickel, etc.), but The invention is not limited to this.

As shown in FIG. 1, in some embodiments, the touch display device 100 may further include an opposite substrate 150 and a display medium layer 160. The opposite substrate 150 is opposite to the substrate 110. The light-shielding pattern layer 130 is disposed on the opposite substrate 150, and the light-shielding pattern layer 130 and the display medium layer 160 are both located between the substrate 110 and the opposite substrate 150. In some embodiments, the opposite substrate 150 may be a transparent substrate, such as a glass substrate, a plastic substrate, a quartz substrate, or other suitable materials. In addition, the display medium layer 160 may include a liquid crystal material, an organic light emitting material, an ink, an electronic ink, or other suitable display materials. However, the present invention is not limited to this.

The orthographic projection of the touch electrode layer 140 on the substrate 110 may overlap the plurality of pixel units 121. Here, as shown in FIG. 1, the touch display device 100 may be an on-cell touch display panel, and the touch electrode layer 140 may be disposed on the opposite substrate 150 corresponding to the pixel array 120. on. In the following, an on-cell touch display panel is taken as an example for description, but the present invention is not limited thereto.

Referring to FIG. 2, the touch electrode layer 140 includes a grid array 141, and the grid array 141 may include a plurality of grid cells 142. Each grid unit 142 may be a closed grid pattern composed of conductive thin lines, such as a rhombus, diamond-like, or quadrangular grid pattern. Here, the grid patterns of the grid units 142 are substantially the same as each other. Each grid unit 142 has a plurality of common portions C1, and any two adjacent grid units 142 may be connected to one of the multiple common portions C1 and one of the other grid units 142 to form a common portion C1. Grid array 141.

In some embodiments, the common portion C1 may be a vertex and / or an edge of each grid unit 142. In other words, each mesh unit 142 is connected with the vertex and / or edge of another adjacent mesh unit 142 by its vertex and / or edge. In addition, two adjacent grid cells 142 When the common portion C1 is connected, the common portion C1 of the two grid units 142 overlap each other. In other words, any two adjacent grid units 142 can be regarded as connected by a common portion C1.

In some embodiments, among the plurality of common portions C1 of each grid unit 142, there will be at least two common portions C1, such as two vertices of the grid unit 142, an orthographic projection on the substrate 110 and a shading pattern. The layer 122 overlaps the front projection of the substrate 110 to reduce the visibility of the moire of the touch display device 100. In an embodiment, as shown in FIG. 2, all vertices (common portion C1) of each grid unit 142 may also be disposed corresponding to the light-shielding pattern layer 130 so that the orthographic projection of all vertices on the substrate 110 may be completely shielded from light The pattern layer 130 overlaps the orthographic projection of the substrate 110 to achieve better visibility of the moire.

FIG. 3 is a schematic diagram of an embodiment of one of the neutron pixels in FIG. 2. Referring to FIG. 2 and FIG. 3, the pixel unit 121 may include a plurality of sub-pixels 1211 arranged on the substrate 110 in an array. Each of the sub-pixels 1211 includes an active device M1 and a pixel electrode E1. In one embodiment, each sub-pixel 1211 may include only a single pixel region. In other words, at this time, each sub-pixel 1211 of each pixel unit 121 may be composed of an active element M1 and a pixel electrode E1.

In addition, a plurality of scan lines SL and data lines DL can be disposed on the substrate 110. Each active element M1 is coupled to the corresponding scan line SL, data line DL, and pixel electrode E1, so that the pixel electrode E1 of each sub-pixel 1211 can be electrically connected via the active element M1 and the corresponding scan line SL and data line DL. Sexual connection.

Here, each scanning line SL may extend along the first direction D1 and may be arranged between any two adjacent sub-pixels along the second direction D2, and each data line DL may extend along the second direction D2 and along the first The direction D1 is arranged between any two adjacent sub-pixels, wherein the first direction D1 and the second direction D2 are perpendicular to each other. In other words, when viewing from the viewing angle of the display side of the touch display device 100, each scan The trace lines SL and the data lines DL will be completely covered by the light-shielding pattern layer 130.

FIG. 4 is a schematic diagram of a second embodiment of a pixel array and a touch electrode layer, and FIG. 5 is a schematic diagram of an embodiment of a pixel unit in FIG. 4. Please refer to FIG. 4 and FIG. 5. In another embodiment, each sub-pixel 1211 may include more than two pixel regions. In the following, a sub-pixel 1211 having two pixel regions is taken as an example for description. For example, each sub-pixel 1211 may be composed of two active elements M11 and M12 and two pixel electrodes E11 and E12. Among them, the pixel area controlled by the active device M11 can be referred to as the main pixel area MP1, and the pixel area controlled by the active device M12 can be referred to as the secondary pixel area SP1, and the primary pixel area MP1 and the secondary pixels The area SP1 may be individually or simultaneously lit according to the display effect.

Here, the pixel electrodes E11 and E12 are separated from each other by a gap T11. In addition, the active elements M11 and M12 are disposed adjacent to one side of the pixel electrode E11, and the active element M12 can cross the main pixel region MP1 through the connection electrode T12 to connect the pixel electrode E12 located at the sub-pixel SP1 to make the connection The electrode T12 and the gap T11 may form a cross pattern T1 on the sub-pixel 1211.

In some implementation aspects, as shown in FIG. 4, at least one of the plurality of common portions C1 of each grid unit 142, such as one of its vertices, is set corresponding to the cross-center position of the cross pattern T1 of the sub-pixel 1211. Therefore, the orthographic projection of at least one common portion C1 of each grid unit 132 on the substrate 110 can be positioned on the corresponding cross pattern T1, thereby reducing the visibility of the moire of the touch display device 100.

FIG. 6 is a schematic diagram of an embodiment of a grid unit. Referring to FIGS. 4 and 6, each grid unit 142 may have a maximum width L1 in the first direction D1.

In an embodiment, as shown in FIG. 2 and FIG. 4, the maximum of each grid unit 142 is The width L1 may be between 0.9 and 1.1 pixel units 121 in the first direction D1, so that the moire interference phenomenon of the touch display device 100 may be slight. In addition, each grid unit 142 may have a maximum length L2 in the second direction D2. Here, the maximum length L2 of each grid unit 142 may be between the length of 0.9 to 1.1 pixel units 121 in the second direction D2. In other words, the ratio of the maximum length L2 of each grid unit 142 to the length of the pixel unit 121 in the second direction D2 is roughly equivalent to the ratio of the maximum width L1 to the width of the pixel unit 121. Corresponding to 1 * 1 pixel unit 121 is constructed as a reference.

FIG. 7 is a schematic diagram of a third embodiment of the pixel array and the touch electrode layer. Please refer to FIG. 6 and FIG. 7. In an embodiment, the maximum width L1 of each grid unit 142 may be between the width of 1.3 to 1.4 pixel units 121 in the first direction D1 to make the touch display. The moire interference of the device 100 may be slight. In addition, each grid unit 142 may have a maximum length L2 in the second direction D2. Here, the maximum length L2 of each grid unit 142 may be between the lengths of 1.3 to 1.4 pixel units 121 in the second direction D2. For example, as shown in FIG. 7, when each pixel unit 121 is arranged in a straight bar to arrange a plurality of sub-pixels 1211, the maximum width L1 of each grid unit 142 is approximately equal to four sub-pixels 1211. The widths in the first direction D1 are the same. When each pixel unit 121 is arranged in a sub-pixel rendering manner to configure a plurality of sub-pixels 1211, the maximum width L1 of each grid unit 142 is approximately the same as the width of 2.66 sub-pixels 1211 in the first direction D1. the same. In other words, the ratio of the maximum length L2 of each grid unit 142 to the length of the pixel unit 121 in the second direction D2 is roughly equivalent to the ratio of the maximum width L1 to the width of the pixel unit 121. At this time, each grid unit 142 is roughly Constructed corresponding to 1.33 * 1.33 pixel unit 121 (that is, 12 subpixels arranged in a straight stripe arrangement of 1211 or 2.66 subpixels arranged in a subpixel rendering arrangement) as a reference from.

FIG. 8 is a schematic diagram of a fourth embodiment of the pixel array and the touch electrode layer. Please refer to FIG. 6 and FIG. 8. In an embodiment, the maximum width L1 of each grid unit 142 may be between 1.9 and 2.1 pixel units 121 in the first direction D1, so as to enable touch display. The moire interference of the device 100 may be slight. In addition, each grid unit 142 may have a maximum length L2 in the second direction D2. Here, the maximum length L2 of each grid unit 142 may be between the lengths of the pixel units 121 in the second direction D2 from 1.9 to 2.1. In other words, the ratio of the maximum length L2 of each grid unit 142 to the length of the pixel unit 121 in the second direction D2 is roughly equivalent to the ratio of the maximum width L1 to the width of the pixel unit 121. At this time, each grid unit 142 is roughly Corresponding to the 2 * 2 pixel unit 121 is constructed as a reference.

FIG. 9 is a schematic diagram of a fifth embodiment of the pixel array and the touch electrode layer. Please refer to FIG. 6 and FIG. 9. In an embodiment, the maximum width L1 of each grid unit 142 may be between 3.9 and 4.1 pixel units 121 in the first direction D1, so that the touch display The moire interference of the device 100 may be slight. In addition, each grid unit 142 may have a maximum length L2 in the second direction D2. Here, the maximum length L2 of each grid unit 142 may be between the length of the 3.9 to 4.1 pixel units 121 in the second direction D2. In other words, the ratio of the maximum length L2 of each grid unit 142 to the length of the pixel unit 121 in the second direction D2 is roughly equivalent to the ratio of the maximum width L1 to the width of the pixel unit 121. At this time, each grid unit 142 is roughly Corresponding to the 4 * 4 pixel unit 121 is constructed as a reference.

In one embodiment, the touch electrode layer 140 and the pixel array 120 may have alignment axes A1 and A2, for example, parallel to the second direction D2. As shown in FIG. 4, when the touch electrode layer 140 is aligned with the pixel array 120 (that is, the touch electrode layer 140 is not deflected relative to the pixel array 120), the alignment axis A1 of the touch electrode layer 140 is aligned. Can be aligned with pixel array 120 A2 coincides. When the touch electrode layer 140 is deflected relative to the pixel array 120 due to process factors (for example, mechanical alignment errors), as shown in FIG. 12 or FIG. 13, the alignment axis A1 of the touch electrode layer 140 will be It cannot coincide with the alignment axis A2 of the pixel array 120, and a rotation angle β will be included between the alignment axis A1 of the touch electrode layer 140 and the alignment axis A2 of the pixel array 120.

In addition, the superimposed image of the touch electrode layer 140 and the pixel array 120 can be converted into a lightness image, and this lightness image can be converted to multiple Moire points in the frequency domain by Fourier transform, and then lower than a certain Moire point. The number of Moire points under a selected condition is counted to obtain the Moire interference index. Among them, the higher the Moire interference index, the more serious the interference situation of the moire. In some embodiments, the selected condition may be that the display tone of the touch display device 100 is below 128 levels and in a non-frontal viewing angle, the display tone of the touch display device 100 is below 128 levels and in a frontal viewing angle or touch The display tone of the control display device 100 is 128 or more, and the present invention is not limited thereto.

FIG. 10 is a schematic diagram showing the relationship between the maximum width of the main pixel area and the grid unit when it is a quadrangle, the rotation angle relative to the pixel array, and the Moire interference index. Please refer to FIG. 10. In one embodiment, a sub-pixel 1211 configured with a display tone of the touch display device 100 of 64 levels and a straight bar arrangement is used as an example. The sub-pixel 1211 has a main pixel area MP1 and a sub-pixel area SP1, and each sub-pixel 1211 lights only under the main pixel area MP1 (that is, only the main pixel area MP1 is driven and displayed), and matches The touch electrode layer 140 having a plurality of rectangular grid cells 142 thereon, and the rotation angles β of the touch electrode layer 140 relative to the pixel array 120 are 0 degrees, between 0 and 0.25 degrees, and between 0 and At 0.5 degrees, when the maximum width L1 of each grid cell 142 of the touch electrode layer 140 is substantially the same as the width of 3, 4, 6, or 12 sub-pixels 1211, the touch display device 100 may have Lower Moire interference index.

FIG. 11 is a schematic diagram showing the relationship between the maximum width, the rotation angle with respect to the pixel array, and the Moire interference index when the grid unit is a quadrangle. Please refer to FIG. 11. In one embodiment, the sub-pixels 1211 arranged in a 64-level display tone of the touch display device 100 and arranged in a straight bar are used as an example. The sub-pixel 1211 has a main pixel area MP1 and a sub-pixel area SP1, and the main pixel area MP1 and the sub-pixel area SP1 of each sub-pixel 1211 are all lit (that is, the main pixel area MP1 and the sub-pixel area SP1). Area SP1 is driven and displayed), and is equipped with a touch electrode layer 140 having a plurality of quadrangular grid cells 142, and the rotation angles β of the touch electrode layer 140 relative to the pixel array 120 are 0 degrees, respectively. Between 0 and 0.25 degrees and between 0 and 0.5 degrees, the maximum width L1 of each grid cell 142 of the touch electrode layer 140 is approximately 3, 4, 6, or 12 sub-pixels 1211 When the width is the same, the touch display device 100 may have a lower Moire interference index.

In other words, under the condition that each sub-pixel 1211 has more than two pixel regions, no matter whether only one or all of the pixel regions of each sub-pixel 1211 are driven and displayed, when the grids of the touch electrode layer 140 When the maximum width L1 of the unit 142 is substantially the same as the width of 3, 4, 6, or 12 sub-pixels 1211, the touch display device 100 may have a lower Moire interference index.

FIG. 12 is a schematic diagram of the touch electrode layer rotated by 0.25 degrees relative to the pixel array, and FIG. 13 is a schematic diagram of the touch electrode layer rotated by -0.25 degrees relative to the pixel array. Please refer to FIG. 4, FIG. 12 and FIG. 13. In a general state, as shown in FIG. 4, the touch electrode layer 140 can be aligned with the pixel array 120 and is not deflected relative to the pixel array 120, that is, the rotation angle β Is 0. At this time, the common part C1 of each grid unit 142 of the touch electrode layer 140 is orthographic projection on the substrate 110 It may overlap with the orthographic projection of the corresponding cross pattern T1 or the light-shielding pattern layer 130 on the substrate 110, respectively.

However, the touch electrode layer 140 may also be rotated relative to the pixel array 120 due to process factors to form a rotation angle β. In an embodiment, as shown in FIG. 12, the rotation angle β of the touch electrode layer 140 relative to the pixel array 120 may be 0.25 degrees (the left-handed angle is a positive angle). In another embodiment, as shown in FIG. 13, the rotation angle β of the touch electrode layer 140 relative to the pixel array 120 may be -0.25 degrees (the right-handed rotation is a negative angle).

Here, when the touch electrode layer 140 has a rotation angle β other than 0 degrees with respect to the pixel array 120, the orthographic projection of the common portion C1 of each grid unit 142 of the touch electrode layer 140 on the substrate 110 will be slightly Deviates from the corresponding cross pattern T1. However, as shown in FIG. 10 and FIG. 11, when the touch electrode layer 140 has a rotation angle β other than 0 degrees with respect to the pixel array 120, the Moire interference index of the touch display device 100 is slightly increased, but the When the maximum width L1 of each grid unit 142 of the touch electrode layer 140 is the same as the width of 3, 4, 6, or 12 sub-pixels 1211, the touch display device 100 may have substantially lower Moire interference. index.

FIG. 14 is a schematic diagram of a sixth embodiment of the pixel array and the touch electrode layer, and FIG. 15 is a schematic diagram of a seventh embodiment of the pixel array and the touch electrode layer. In some embodiments, the shape of each grid unit 142 may be a quadrangle (for example, as shown in FIG. 4), or a circle (for example, as shown in FIG. 14) or a hexagon (for example, as shown in FIG. 15). (Shown) and so on. However, the present invention is not limited thereto, and the shape of each grid unit 142 may be any suitable shape.

FIG. 16 is a schematic diagram of the relationship between the maximum width of the main pixel area and the grid unit, the rotation angle relative to the pixel array, and the Moire interference index when the grid unit is circular. Please refer to FIG. 16. In an embodiment, the display tone of the touch display device 100 is 64 steps and a straight bar is used. As an example, the sub-pixels 1211 arranged in the shape arrangement are as follows. Each sub-pixel 1211 in the pixel array 120 has a main pixel area MP1 and a sub-pixel area SP1, and each sub-pixel 1211 only lights up the main pixel. Area MP1 (that is, only the main pixel area MP1 is driven and displayed), and is matched with a touch electrode layer 140 having a plurality of circular grid cells 142, and the touch electrode layer 140 is relative to the pixels When the rotation angle β of the array 120 is 0 degrees, between 0 and 0.25 degrees, and between 0 and 0.5 degrees, the maximum width L1 of each grid unit 142 of the touch electrode layer 140 is approximately between three and four. When the width of one, six, or twelve sub-pixels 1211 is the same, that is, when the width of one, 1.33, two, or four pixel units 121 is the same, the touch display device 100 may have a lower Moire interference index. .

FIG. 17 is a schematic diagram showing the relationship between the maximum width of a pixel unit including two sub-pixels and the grid unit being a quadrangle, the rotation angle relative to the pixel array, and the Moire interference index. Please refer to FIG. 17. In one embodiment, a sub-pixel 1211 configured with a display tone of the touch display device 100 of 64 levels and a sub-pixel rendering arrangement is used as an example, and a plurality of When the touch electrode layer 140 of the rectangular grid unit 142 and the rotation angles β of the touch electrode layer 140 with respect to the pixel array 120 are 0 degrees, between 0 and 0.25 degrees, and between 0 and 0.5 degrees, The maximum width L1 of each grid cell 142 of the touch electrode layer 140 is approximately the same as the width of 2, 6, 66, 4, or 8 sub-pixels 1211, that is, 1, 1.33, 2 or 1. When the widths of the four pixel units 121 are the same, the touch display device 100 may have a lower Moire interference index.

In some embodiments, as shown in FIG. 6, an included angle θ between at least one edge of each grid unit 142 and the first direction D1 may be between 44.5 degrees and 45.5 degrees. In another embodiment, an angle θ between at least one edge of each grid unit 142 and the first direction D1 may be between 44.75 degrees and 45.25 degrees. In addition, in another embodiment, when the When the included angle θ between the at least one edge and the first direction D1 is substantially 45 degrees, the touch display device 100 may have better moire invisibility.

In some embodiments, the shape of each grid unit 142 may be a rhombus, so that the visibility of the overlapping pattern of the touch display device 100 can be lowered.

In some embodiments, each grid unit 142 may be a closed grid pattern composed of conductive thin lines that are straight lines, arcs, wavy lines, polylines, or a combination thereof. In addition, the material of the grid unit 142 may be metal (such as gold, aluminum, copper, silver, etc.), metal alloy, metal composite layer, metal alloy composite layer, organic conductive material, oxide conductive material, and the like. However, the present invention is not limited to this.

In one embodiment, the width of the conductive thin lines constituting each grid unit 142 may be between 1 micrometer (μm) and 10 micrometers. In another embodiment, the width of the conductive thin lines constituting each grid unit 142 may be between 2 μm and 7 μm. In addition, in another embodiment, when the width of the conductive thin lines constituting each grid unit 142 is between 3 micrometers and 5 micrometers, the touch and display effects of the touch display device 100 will be better.

FIG. 18 is a schematic side structural view of a touch display panel according to a second embodiment of the present invention. Referring to FIG. 18, in an embodiment, the touch display device 100 may be an in-cell touch display panel, and the light-shielding pattern layer 130 and the touch electrode layer 140 may correspond to the pixel array in this order. 120 is sequentially disposed on the opposite substrate 150 and sandwiched between the opposite substrate 150 and the substrate 110. However, the present invention is not limited to this, and the order of the touch electrode layer 140 to the light-shielding pattern layer 130 may be changed to correspond to the pixel array 120 sequentially disposed on the opposite substrate 150 and sandwiched between the opposite substrate 150 and the substrate. Between 110.

19 is a schematic side view structure of a touch display panel according to a third embodiment of the present invention. Illustration. In another embodiment, the touch display device 100 may be an out-cell touch display panel. At this time, the touch display device 100 further includes a bonding substrate 170, and the touch electrode layer 140 may be disposed on the bonding substrate 170 first, and then the bonding substrate 170 is corresponding to the pixel array 120 through the bonding layer 180. Joined on the opposite substrate 150. It should be noted that although the bonding layer 180 shown here is fully laid between the bonding substrate 170 and the opposite substrate 150, the present invention is not limited thereto, and the bonding layer 180 may be provided only in the surrounding area. Or both sides, so that the bonding substrate 170 and the opposite substrate 150 may have a gap in the central block.

In summary, in the touch display device of the embodiment of the present invention, when the maximum length or the maximum width of each grid unit corresponds to about 1 pixel unit, 1.33 pixel units, 2 pixel units, or 4 When the size of the pixel unit is, the visibility of the moire of the touch display device 100 can be lowered. In addition, at least two of the plurality of common portions of each grid unit of the touch electrode layer are disposed corresponding to the light-shielding pattern layer, so that the at least two common portions of each grid unit have an orthographic projection and a light-shielding pattern on the substrate. The orthographic projection of the layers on the substrate can be overlapped, thereby reducing the visibility of the moire of the touch display device.

Although the technical content of the present invention has been disclosed as above with preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art and making some changes and retouching without departing from the spirit of the present invention should be covered by the present invention. Therefore, the scope of protection of the present invention shall be determined by the scope of the appended patent application.

120‧‧‧ pixel array

121‧‧‧ Pixel Unit

1211‧‧‧ sub pixels

130‧‧‧ light-shielding pattern layer

141‧‧‧Grid Array

142‧‧‧Grid cells

C1‧‧‧ Common Department

D1‧‧‧ first direction

D2‧‧‧ Second direction

T1‧‧‧ Cross Pattern

A1‧‧‧aligned axis

A2‧‧‧aligned axis

Claims (13)

A touch display device includes: a substrate; a pixel array disposed on the substrate, including a plurality of pixel units, the plurality of pixel units are arranged along a first direction, and each of the pixel units includes a plurality of sub-pixels ; A light-shielding pattern layer, the orthographic projection of the light-shielding pattern layer on the substrate is located at the junction of each of the sub-pixels; and a touch electrode layer, the orthographic projection of the touch electrode layer on the substrate overlaps the plurality of pixels Unit, the touch electrode layer includes a grid array, the grid array includes a plurality of grid units, each grid unit has a maximum width in the first direction, and the maximum width is between 0.9 and 1.1 The width of the pixel unit in the first direction; wherein, any two adjacent grid units are connected to a common portion, and each of the grid units has a plurality of the common portions, and the common portion is the grid unit. A vertex or edge, and the orthographic projection of the common portion of each of the grid units on the substrate and the orthographic projection of the light-shielding pattern layer on the substrate overlap. A touch display device includes: a substrate; a pixel array disposed on the substrate, including a plurality of pixel units, the plurality of pixel units are arranged along a first direction, and each of the pixel units includes a plurality of sub-pixels ; A light-shielding pattern layer, the orthographic projection of the light-shielding pattern layer on the substrate is located at the junction of each of the sub-pixels; and a touch electrode layer, the orthographic projection of the touch electrode layer on the substrate overlaps the plurality of pixels Unit, the touch electrode layer includes a grid array, and the grid array includes a plurality of grid cells, each of which The grid unit has a maximum width in the first direction, and the maximum width is between 1.3 to 1.4 widths of the pixel unit in the first direction; wherein any two adjacent grid units are connected In a common part, each of the grid units has a plurality of common parts, the common part is a vertex or edge of the grid unit, and the orthographic projection of the common part of each grid unit on the substrate and the light shielding The pattern layer overlaps the orthographic projection of the substrate. A touch display device includes: a substrate; a pixel array disposed on the substrate, including a plurality of pixel units, the plurality of pixel units are arranged along a first direction, and each of the pixel units includes a plurality of sub-pixels ; A light-shielding pattern layer, the orthographic projection of the light-shielding pattern layer on the substrate is located at the junction of each of the sub-pixels; and a touch electrode layer, the orthographic projection of the touch electrode layer on the substrate overlaps the plurality of pixels Unit, the touch electrode layer includes a grid array, the grid array includes a plurality of grid units, each grid unit has a maximum width in the first direction, and the maximum width is between 1.9 and 2.1 The width of the pixel unit in the first direction; wherein, any two adjacent grid units are connected to a common portion, and each of the grid units has a plurality of the common portions, and the common portion is the grid unit. A vertex or edge, and the orthographic projection of the common portion of each of the grid units on the substrate and the orthographic projection of the light-shielding pattern layer on the substrate overlap. A touch display device includes: a substrate; a pixel array disposed on the substrate, including a plurality of pixel units, the plurality of pixel units are arranged along a first direction, and each of the pixel units includes a plurality of sub-pixels ; A light-shielding pattern layer, the orthographic projection of the light-shielding pattern layer on the substrate is located at the junction of each of the sub-pixels; and a touch electrode layer, the orthographic projection of the touch electrode layer on the substrate overlaps the plurality of pixel units The touch electrode layer includes a grid array including a plurality of grid cells, each grid cell having a maximum width in the first direction, and the maximum width is between 3.9 and 4.1. The width of the element unit in the first direction; wherein any two adjacent grid units are connected to a common portion, and each of the grid units has a plurality of the common portions, and the common portion is one of the grid units Vertices or edges, and the orthographic projection of the common portion of each of the grid units on the substrate and the orthographic projection of the light-shielding pattern layer on the substrate overlap. A touch display device includes: a substrate; a pixel array disposed on the substrate, including a plurality of pixel units, the plurality of pixel units are arranged along a first direction, and each of the pixel units includes a plurality of sub-pixels ; A light-shielding pattern layer, the orthographic projection of the light-shielding pattern layer on the substrate is located at the junction of each of the sub-pixels; and a touch electrode layer, the orthographic projection of the touch electrode layer on the substrate overlaps the plurality of pixels Unit, the touch electrode layer includes a grid array, the grid array includes a plurality of grid units, each grid unit has a maximum width in the first direction, and the maximum width is between 0.9 and 1.1 The width of the pixel unit in the first direction; wherein any two adjacent grid units are connected to a common portion, each grid unit has a plurality of the common portions, and the common portions are each the grid A vertex of the unit, each of the sub-pixels includes a first pixel electrode, a second pixel electrode and a connection electrode, the first pixel electrode and the second pixel The pixel electrodes are separated by a gap in a second direction, the second direction is orthogonal to the first direction, and the connection electrode is connected to the first pixel electrode from one side of the first pixel electrode to the first pixel electrode. Two pixel electrodes, and the connection electrode and the gap form a cross pattern, and at least one of the common portions of the plurality of common portions of each grid unit is orthographically projected on the substrate on the cross pattern. A touch display device includes: a substrate; a pixel array disposed on the substrate, including a plurality of pixel units, the plurality of pixel units are arranged along a first direction, and each of the pixel units includes a plurality of sub-pixels ; A light-shielding pattern layer, the orthographic projection of the light-shielding pattern layer on the substrate is located at the junction of each of the sub-pixels; and a touch electrode layer, the orthographic projection of the touch electrode layer on the substrate overlaps the plurality of pixels Unit, the touch electrode layer includes a grid array, the grid array includes a plurality of grid units, each grid unit has a maximum width in the first direction, and the maximum width is between 1.3 and 1.4 The width of the pixel unit in the first direction; wherein any two adjacent grid units are connected to a common portion, each grid unit has a plurality of the common portions, and the common portions are each the grid A vertex of the unit, each of the sub-pixels includes a first pixel electrode, a second pixel electrode, and a connection electrode, and the first pixel electrode and the second pixel electrode are separated by one in a second direction. Gap, the second direction is orthogonal to the first The connecting electrode crosses the first pixel electrode from one side of the first pixel electrode to the second pixel electrode, and the connecting electrode forms a cross pattern with the gap, and each of the grids At least one of the plurality of common portions of the unit, the common projection of the common portion on the substrate is located on the cross pattern. A touch display device includes: A substrate; a pixel array arranged on the substrate, including a plurality of pixel units, the plurality of pixel units being arranged along a first direction, each of the pixel units including a plurality of sub-pixels; a light-shielding pattern layer, the light-shielding The orthographic projection of the pattern layer on the substrate is located at the junction of each of the sub-pixels; and a touch electrode layer, the orthographic projection of the touch electrode layer on the substrate overlaps the plurality of pixel units, and the touch electrode layer includes A grid array including a plurality of grid units, each grid unit having a maximum width in the first direction, and the maximum width being between 1.9 and 2.1 of the pixel units on the first side Upward width; wherein any two adjacent grid cells are connected to a common part, each grid cell has a plurality of common parts, and the common part is a vertex of each of the grid cells, and each The pixel includes a first pixel electrode, a second pixel electrode, and a connection electrode. The first pixel electrode and the second pixel electrode are separated by a gap in a second direction, and the second direction is orthogonal. In the first direction, the connection electrode extends from the first One side of the pixel electrode is connected to the second pixel electrode across the first pixel electrode, and the connection electrode forms a cross pattern with the gap, and at least one of the plurality of common portions of each grid unit An orthographic projection of the common portion on the substrate is located on the cross pattern. A touch display device includes: a substrate; a pixel array disposed on the substrate, including a plurality of pixel units, the plurality of pixel units are arranged along a first direction, and each of the pixel units includes a plurality of sub-pixels A light-shielding pattern layer, the orthographic projection of the light-shielding pattern layer on the substrate is located at the junction of each of the sub-pixels; and A touch electrode layer, the orthographic projection of the touch electrode layer on the substrate overlaps the plurality of pixel units, the touch electrode layer includes a grid array, the grid array includes a plurality of grid units, and each of the grids The unit has a maximum width in the first direction, and the maximum width is between 3.9 and 4.1 widths of the pixel unit in the first direction; wherein any two adjacent grid cells are connected to each other. A common unit, each of the grid units having a plurality of common units, the common unit being a vertex of each of the grid units, each of the sub-pixels including a first pixel electrode, a second pixel electrode and a connection Electrode, the first pixel electrode and the second pixel electrode are separated by a gap in a second direction, the second direction is orthogonal to the first direction, and the connection electrode is from one side of the first pixel electrode Is connected to the second pixel electrode across the first pixel electrode, and the connection electrode and the gap form a cross pattern, and at least one of the plurality of common portions of each of the grid cells is in the common portion in The orthographic projection of the substrate is located on the cross pattern. The touch display device according to any one of claims 1 to 8, wherein an included angle between at least one edge of each of the grid units and the first direction is substantially 45 degrees. The touch display device according to any one of claims 1 to 8, wherein a shape of each of the grid units is a rhombus. The touch display device according to any one of claims 1 to 8, wherein each of the pixel units is composed of three of the sub-pixels. The touch display device according to any one of claims 1 to 8, wherein each of the pixel units is composed of two of the sub-pixels. The touch display device according to any one of claims 1 to 8, wherein each of the grid units has a maximum length in a second direction, the second direction is perpendicular to the first direction, And the ratio of the maximum length to the length of the pixel unit in the second direction is roughly equivalent to the ratio of the maximum width to the width of the pixel unit.