CN111708466A - Touch display panel and display device - Google Patents
Touch display panel and display device Download PDFInfo
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- CN111708466A CN111708466A CN202010736569.XA CN202010736569A CN111708466A CN 111708466 A CN111708466 A CN 111708466A CN 202010736569 A CN202010736569 A CN 202010736569A CN 111708466 A CN111708466 A CN 111708466A
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/0412—Digitisers structurally integrated in a display
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/044—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means
- G06F3/0445—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means using two or more layers of sensing electrodes, e.g. using two layers of electrodes separated by a dielectric layer
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Abstract
The invention discloses a touch display panel and a display device, belonging to the technical field of display, wherein a display area of the touch display panel comprises a plurality of touch electrode blocks which are arranged in an array, and each touch electrode block is electrically connected with at least one touch signal wire; the touch electrode blocks arranged along the first direction form a touch electrode row, for the same touch electrode row, the touch electrode row points to a fourth edge along a third edge, the distance from each touch electrode block to the first edge is gradually reduced, and the distance from each touch electrode block to the second edge is gradually increased; each touch signal line comprises a first sub line and a second sub line which are mutually connected, the first sub line is positioned in the display area, and the second sub line is positioned in the non-display area. The display device comprises the touch display panel. The invention can lead the areas of all the touch electrode blocks to be consistent, is beneficial to improving the touch detection sensitivity and the overall uniformity of touch detection, and improves the touch performance.
Description
Technical Field
The present invention relates to the field of display technologies, and in particular, to a touch display panel and a display device.
Background
With the rapid development of display technology, Touch Screen panels (Touch screens) have gradually spread throughout the lives of people. A touch display panel is a display device having both display and command input functions. The user can directly contact the touch panel with a hand or an object, and the touch panel can detect a touch point and make a corresponding response according to an area touched by the user. The touch panel is applied to personal mobile communication equipment and comprehensive information terminals, such as main human-computer interaction interfaces of tablet computers, smart phones, super notebook computers and the like.
The touch screen comprises an external touch display screen and an embedded touch display screen, wherein the embedded touch display screen is favored due to being light and thin. Touch screens can be divided into capacitance sensing type touch screens, resistance sensing type touch screens, optical sensing type touch screens and the like according to the principle; the capacitance sensing touch screen comprises a self-capacitance sensing touch screen and a mutual capacitance sensing touch screen. Compared with a mutual capacitance sensing touch screen, the self-capacitance sensing touch screen has the advantages of higher signal-to-noise ratio of touch control and higher accuracy of touch control sensing.
Currently, self-capacitance touch screens are widely applied to electronic products such as intelligent computers and tablet computers, and people have higher and higher requirements on touch display panels in display screens. The existing single-layer self-capacitance touch screen is easy to have the problems of low touch precision, touch position coordinate offset and misinformation during touch detection, and greatly influences the touch detection precision.
Therefore, it is an urgent technical problem to be solved by those skilled in the art to provide a touch display panel and a display device that can improve touch sensitivity and is beneficial to improving touch performance and touch accuracy.
Disclosure of Invention
In view of this, the present invention provides a touch display panel and a display device to solve the problem that the touch display screen in the prior art has low touch sensitivity and is not favorable for improving touch performance.
The invention discloses a touch display panel, comprising: the touch display panel comprises a first edge and a second edge which are oppositely arranged in a second direction, and further comprises a third edge and a fourth edge which are oppositely arranged in the first direction; wherein the second direction intersects the first direction; the display area comprises a plurality of touch electrode blocks which are arranged in an array, each touch electrode block is electrically connected with at least one touch signal line, and the touch signal lines electrically connected with different touch electrode blocks are different; the touch electrode blocks arranged along the first direction form touch electrode rows, and the touch electrode rows are sequentially arranged along the second direction; for the same touch electrode row, pointing to a fourth edge along a third edge, wherein the distance from each touch electrode block to the first edge is gradually reduced, and the distance from each touch electrode block to the second edge is gradually increased; each touch signal line comprises a first sub line and a second sub line which are mutually connected, the first sub line is positioned in the display area, and the second sub line is positioned in the non-display area.
Based on the same inventive concept, the invention also discloses a display device, which comprises the touch display panel.
Compared with the prior art, the touch display panel and the display device provided by the invention at least realize the following beneficial effects:
the touch display panel belongs to a self-capacitance sensing type touch display panel, and a touch electrode block in the touch display panel and a touch signal line electrically connected with the touch electrode block are arranged on the same layer, and the touch display panel belongs to a mode of arranging a touch structure on a single layer. Among a plurality of touch electrode blocks arranged in an array, the touch electrode blocks arranged along a first direction form a touch electrode row, the touch electrode rows are sequentially arranged along a second direction, for the same touch electrode row, the distance from each touch electrode block to a first edge is gradually reduced, the distance from each touch electrode block to a second edge is gradually increased, namely, each touch electrode block of the same touch electrode row is distributed in a step-shaped staggered manner, in each touch signal line connected with each touch electrode block, only a first sub-line walks a display area, the rest second sub-lines walks a non-display area (a frame area), and each touch electrode block of the same touch electrode row is distributed in a step-shaped staggered manner, so that enough space can be provided for each first sub-line in the display area, and therefore, short circuit routing among the touch signal lines can be avoided, the layout area of the touch electrode blocks in the display area occupied by the touch signal lines can be avoided, the layout area of the touch electrode blocks in the touch blind areas in the related technology can be increased, the areas of the touch electrode blocks tend to be consistent as much as possible, the touch blind areas can be reduced as much as possible, the touch detection sensitivity and the overall uniformity of touch detection can be improved, and the touch performance can be improved.
Of course, it is not necessary for any product in which the present invention is practiced to specifically achieve all of the above-described technical effects simultaneously.
Other features of the present invention and advantages thereof will become apparent from the following detailed description of exemplary embodiments thereof, which proceeds with reference to the accompanying drawings.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description, serve to explain the principles of the invention.
Fig. 1 is a schematic plan view of a touch display panel in the related art;
fig. 2 is a schematic plan view illustrating a touch display panel according to an embodiment of the present invention;
fig. 3 is a schematic plan view of another touch display panel according to an embodiment of the invention;
fig. 4 is a schematic plan view illustrating another touch display panel according to an embodiment of the invention;
fig. 5 is a schematic plan view illustrating another touch display panel according to an embodiment of the invention;
fig. 6 is a schematic plan view illustrating another touch display panel according to an embodiment of the invention;
fig. 7 is a schematic plan view illustrating another touch display panel according to an embodiment of the invention;
FIG. 8 is an enlarged view of a portion of FIG. 7;
fig. 9 is a schematic plan view illustrating another touch display panel according to an embodiment of the invention;
fig. 10 is a schematic plan view illustrating another touch display panel according to an embodiment of the invention;
fig. 11 is a schematic plan view of a display device according to an embodiment of the present invention.
Detailed Description
Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that: the relative arrangement of the components and steps, the numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless specifically stated otherwise.
The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses.
Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate.
In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.
As shown in fig. 1, fig. 1 is a schematic plane structure diagram of a touch display panel in the related art, and in a self-capacitance sensing type touch display panel 000 ' in the related art, a plurality of touch electrodes 10 ' (not filled in fig. 1) disposed on the same layer and insulated from each other, and a plurality of touch signal lines 20 ' corresponding to and electrically connected to the touch electrodes 10 ' one by one, that is, the touch electrodes 10 ' and the touch signal lines 20 ' are disposed on the same layer, and a touch detection chip 30 ' electrically connected to the touch electrodes 10 ' through the touch signal lines 20 ' is generally disposed. When the touch subject (which may be a finger) does not touch the screen, the capacitance borne by the touch electrode 10 'is a fixed value, and when the touch subject touches the screen, the capacitance borne by the touch electrode 10' is the capacitance superposed with the fixed value of the touch subject, and the touch detection chip 30 'can determine the touch position by detecting the capacitance change of each touch electrode 10' in the touch time period.
In the self-capacitance sensing touch display panel, in order to ensure the touch accuracy, a larger number of touch electrodes 10 'are generally provided, and accordingly, the number of touch signal lines 20' is also larger, and the panel space occupied by the touch signal lines 20 'located at the periphery of each touch electrode 10' is also larger, as shown in an M 'region in fig. 1, in order to avoid a short circuit phenomenon caused by too small distance between more touch signal lines 20', the layout area of a part of touch electrodes 10 'needs to be sacrificed, that is, the layout area of a part of touch electrodes 10' at the position where more touch signal lines 20 'are arranged is relatively smaller, and more touch dead zones occur in the M' region. For example, as shown in fig. 1, in a 6 × 8 array of touch units (one touch unit refers to one touch electrode 10 '), the numbers of Rx1, Rx2, Rx3, Rx4, … …, Rx8, … …, Rx43, … …, and Rx48 are respectively larger than the space occupied by the touch signal lines 20' on the sides of the touch electrodes 10 'numbered Rx43, … …, and Rx48 closest to the touch detection chip 30', so that the areas of the touch electrodes 10 'numbered Rx43, … …, and Rx48 are much smaller than the areas of the touch electrodes 10' numbered Rx1, … …, and Rx6, which belong to a touch dead zone, and therefore, the touch accuracy of the touch electrodes 10 'numbered Rx43, … …, and Rx48 closest to the touch detection chip 30' is likely to be reduced, and the touch sensitivity of the entire touch display panel is reduced.
Based on the above problem, the application provides a touch display panel and a display device, which can improve touch sensitivity and are beneficial to improving touch performance and touch precision. Specific embodiments of the touch display panel and the display device provided in the present application are described in detail as follows.
Referring to fig. 2 to 5 in combination, fig. 2 is a schematic plan structure diagram of a touch display panel according to an embodiment of the present invention, fig. 3 is a schematic plan structure diagram of another touch display panel according to an embodiment of the present invention, fig. 4 is a schematic plan structure diagram of another touch display panel according to an embodiment of the present invention, fig. 5 is a schematic plan structure diagram of another touch display panel according to an embodiment of the present invention, and a touch display panel 000 according to the embodiment includes: the touch display panel 000 includes a display area AA and a non-display area NA disposed around the display area AA, and the touch display panel 000 includes a first edge E1 and a second edge E2 disposed opposite to each other in the second direction Y, and further includes a third edge E3 and a fourth edge E4 disposed opposite to each other in the first direction X; optionally, as shown in fig. 2, the first direction X and the second direction Y are perpendicular to each other on a plane where the touch display panel 000 is located;
the display area AA includes a plurality of touch electrode blocks 10 arranged in an array, each touch electrode block 10 is electrically connected to at least one touch signal line 20, the touch signal lines 20 electrically connected to different touch electrode blocks 10 are different, that is, the touch signal lines 20 electrically connected to different touch electrode blocks 10 are different, the plurality of touch electrode blocks 10 arranged along a first direction X form a touch electrode row 10H, and the plurality of touch electrode rows 10H are sequentially arranged along a second direction Y;
for the same touch electrode row 10H, the distance L1 from each touch electrode block 10 to the first edge E1 gradually decreases, and the distance L2 from each touch electrode block 10 to the second edge E2 gradually increases along the third edge E3 pointing to the fourth edge E4;
each touch signal line 20 includes a first sub line 201 and a second sub line 202 connected to each other, the first sub line 201 is located in the display area AA, and the second sub line 202 is located in the non-display area NA. It is understood that, for clearly illustrating each touch signal line 20 of the present embodiment, the spacing between the adjacent touch electrode rows 10H and the layout space of the non-display area NA are illustrated in fig. 2-5 in an enlarged manner, that is, the spacing between the adjacent touch electrode rows 10H and the layout space of the non-display area NA illustrated in fig. 2-5 are not an actual implementation structure.
Specifically, the touch display panel 000 of the present embodiment belongs to a self-capacitance sensing type touch display panel, and the touch display panel 000 includes a display area AA and a non-display area NA disposed around the display area AA, the display area AA includes a plurality of touch electrode blocks 10 arranged in an array, each touch electrode block 10 is electrically connected to at least one touch signal line 20, and the touch signal lines 20 electrically connected to different touch electrode blocks 10 are different. Optionally, each touch electrode block 10 may be electrically connected to the touch detection chip 30 through the touch signal line 20 (not shown, it is understood that the second sub-line 202 of the touch signal line 20 needs to be bent and then electrically connected to the touch detection chip 30), when a touch subject (which may be a finger) does not touch the screen, the capacitance borne by the touch electrode block 10 is a fixed value, when the touch subject touches the screen, the capacitance borne by the touch electrode block 10 is a fixed value and needs to be superimposed on the capacitance of the touch subject, and the touch detection chip 30 may determine the touch position by detecting the capacitance change of each touch electrode block 10 in the touch time period. The touch electrode block 10 and the touch signal line 20 electrically connected thereto in the touch display panel 000 of the present embodiment are disposed on the same layer, which belongs to a single-layer layout touch structure. Optionally, the touch display panel 000 of the embodiment has a square structure, and includes a first edge E1 and a second edge E2 that are oppositely disposed in the second direction Y, and a third edge E3 and a fourth edge E4 that are oppositely disposed in the first direction X; the first direction X and the second direction Y are perpendicular to each other on a plane where the touch display panel 000 is located. Among the plurality of touch electrode blocks 10 arranged in an array, the touch electrode blocks 10 arranged in the first direction X form a touch electrode row 10H, the plurality of touch electrode rows 10H are sequentially arranged in the second direction Y, for the same touch electrode row 10H, the same touch electrode row points to the fourth edge E4 along the third edge E3, the distance L1 from each touch electrode block 10 to the first edge E1 gradually decreases, and the distance L2 from each touch electrode block 10 to the second edge E2 gradually increases. As shown in fig. 2 to 5, in this embodiment, each touch electrode block 10 of the same touch electrode row 10H is distributed in a staggered manner in a step shape, each touch signal line 20 includes a first sub line 201 and a second sub line 202 connected to each other, the first sub line 201 is located in the display area AA, the second sub line 202 is located in the non-display area NA, and in each touch signal line 20 connected to each touch electrode block 10, only the first sub line 201 runs through the display area AA, the remaining second sub lines 202 run through the non-display area NA (frame area), each touch electrode block 10 of the same touch electrode row 10H is distributed in a staggered manner in a step shape, which can provide enough space for each first sub line 201 to run in the display area AA, thereby avoiding short circuit between the touch signal lines 20 and avoiding the touch signal lines 20 occupying the layout area of the touch electrode blocks 10 within the display area AA, the layout area of the touch electrode blocks 10 in the M' region in the related art (as shown in fig. 1) is increased, the areas of the touch electrode blocks 10 are as uniform as possible (especially, the area of the touch electrode block 10 near one side of the touch detection chip 30 is increased), and thus the touch blind area is reduced as much as possible, the touch detection sensitivity and the overall uniformity of touch detection are improved, and the touch performance is improved.
It should be noted that, in the present embodiment, specific positions of the first edge E1, the second edge E2, the third edge E3, and the fourth edge E4 of the touch display panel 000 are not specifically limited, as shown in fig. 2 to fig. 5, there may be a plurality of schematic positions of the first edge E1, the second edge E2, the third edge E3, and the fourth edge E4, but all of them satisfy that the first edge E1 and the second edge E2 are oppositely disposed in the second direction Y, the third edge E3 and the fourth edge E4 are oppositely disposed in the first direction X, and for the same touch electrode row 10H, the distance L1 from each touch electrode block 10 to the first edge E1 is gradually reduced, and the distance L2 from each touch electrode block 10 to the second edge E2 is gradually increased along the direction from the third edge E3 to the fourth edge E4. Fig. 2-5 of the present embodiment only illustrate the touch display panel 000 as a square, and in a specific implementation, the shape of the touch display panel 000 may be, but is not limited to, other shapes. In this embodiment, in the same touch electrode row 10H, the size of the distance L1 from each touch electrode block 10 to the first edge E1 is gradually reduced from the third edge E3 to the fourth edge E4, and the size of the distance L2 from each touch electrode block 10 to the second edge E2 is not specifically limited. It can be understood that fig. 2 to fig. 5 of the present embodiment only schematically illustrate the structure of the touch display panel, and in a specific implementation, the structure of the touch display panel is not limited thereto, and may also include other structures capable of implementing the function of the touch display panel, which can be specifically understood with reference to the structure of the display panel in the related art, and the present embodiment is not described herein again. Fig. 2 to 5 of the present embodiment are only exemplified by the shape of the touch electrode block 10 being a square, and in practical implementation, the shape of the touch electrode block 10 is not limited thereto, and may be other shapes, and the present embodiment is not limited in particular.
Optionally, the touch display panel 000 of this embodiment may be an organic light emitting display panel, the touch functional structure may be disposed above a thin film encapsulation layer of the organic light emitting display panel (touch design of TPOT of OLED), and the touch functional structure is designed by a transparent conductive film layer, that is, the touch electrode block 10 and the touch signal line 20 are made of a single-layer and single-layer transparent conductive film layer, the transparent conductive film layer may be made of a material that is not limited to Indium tin oxide semiconductor (ITO), this embodiment is not limited specifically, and only the requirement that the material of the touch electrode block 10 has conductivity and has transparency to avoid affecting the display effect is satisfied.
In some optional embodiments, please refer to fig. 2 to 6 in combination, fig. 6 is a schematic plan view illustrating a planar structure of another touch display panel according to an embodiment of the present invention, in which the non-display area NA includes a first non-display area NA1 and a second non-display area NA2 located at two opposite sides of the display area AA, wherein the first non-display area NA1 is disposed adjacent to the third edge E3, and the second non-display area NA2 is disposed adjacent to the fourth edge E4; the second sub-line 202 is located at the first non-display area NA1 and/or the second non-display area NA 2.
In the present embodiment, it is explained that, in each touch signal line 20 connected to each touch electrode block 10, the first sub line 201 of the touch signal line 20 extends across the display area AA, the remaining second sub line 202 of the touch signal line 20 extends across the non-display area NA, and of the plurality of second sub lines 202, all of the number of second sub lines 202 may be located in the first non-display area NA1 (as shown in fig. 2 and 5), or all of the number of second sub lines 202 may be located in the second non-display area NA2 (as shown in fig. 3 and 4), or a part of the number of second sub lines 202 may be located in the first non-display area NA1, and the remaining part of the number of second sub lines 202 is located in the second non-display area NA2 (as shown in fig. 6). In this embodiment, the routing position of the second sub-line 202 routed in the frame area is not specifically limited, the second sub-line can be routed in the first non-display area NA1 on one side, or in the second non-display area NA2 on one side, which is beneficial to simplifying the wiring difficulty, and can also be routed in the first non-display area NA1 and the second non-display area NA2, which is beneficial to balancing the number of the non-display areas NA on both sides of the display area AA, so that the frame spaces on the left side and the right side are homogenized.
In some optional embodiments, please continue to refer to fig. 2-6, in this embodiment, the forward projection areas of each touch electrode block 10 to the light exit surface of the touch display panel 000 are equal.
The embodiment explains that the orthographic projection area of each touch electrode block 10 to the light-emitting surface of the touch display panel 000 can be set to be equal, because in each touch signal line 20 connected to each touch electrode block 10 in the embodiment, only the first sub-line 201 runs through the display area AA, the remaining second sub-line 202 runs through the non-display area NA (frame area), and each touch electrode block 10 of the same touch electrode row 10H is distributed in a staggered manner in a step shape, sufficient space can be provided for each first sub-line 201 to run in the display area AA, and the touch signal line 20 can be prevented from occupying the layout area of the touch electrode blocks 10 in the display area AA, so that the orthographic projection area of each touch electrode block 10 to the light-emitting surface of the touch display panel 000 tends to be consistent (especially, the area of the touch electrode block 10 near one side of the touch detection chip 30 is favorably increased), under the condition that the process conditions allow, the forward projection areas of the touch electrode blocks 10 to the light exit surface of the touch display panel 000 can be set to be equal, so that the touch blind area can be reduced, the touch detection sensitivity can be improved, and meanwhile, the touch detection uniformity of the whole touch display panel can be improved and the touch performance can be improved by the equal forward projection areas of the touch electrode blocks 10 to the light exit surface of the touch display panel 000.
In some optional embodiments, please refer to fig. 2 to fig. 6 with continued reference, in this embodiment, the lengths of the orthographic projections of each touch electrode block 10 to the light exit surface of the touch display panel 000 in the first direction X are equal, and the lengths of the orthographic projections of each touch electrode block 10 to the light exit surface of the touch display panel 000 in the second direction Y are equal.
The present embodiment further explains that the lengths of the orthographic projections of each touch electrode block 10 on the light emitting surface of the touch display panel 000 in the first direction X are equal, and the lengths of the orthographic projections of each touch electrode block 10 on the light emitting surface of the touch display panel 000 in the second direction Y are equal, that is, the orthographic projection areas of each touch electrode block 10 on the light emitting surface of the touch display panel 000 are equal and the shapes are also equal. Since only the first sub-line 201 of each touch signal line 20 connected to each touch electrode block 10 in this embodiment runs through the display area AA, the remaining second sub-lines 202 run through the non-display area NA (frame area), and each touch electrode block 10 of the same touch electrode row 10H is distributed in a staggered manner in a step shape, a sufficient space can be provided for each first sub-line 201 to run in the display area AA, and the touch signal lines 20 can be prevented from occupying the layout area of the touch electrode blocks 10 within the display area AA, so that the orthographic projection areas of each touch electrode block 10 on the light-emitting surface of the touch display panel 000 tend to be consistent (especially, the area of the touch electrode block 10 near one side of the touch detection chip 30 is increased), and under the permission of process conditions, the orthographic projection areas of each touch electrode block 10 on the light-emitting surface of the touch display panel 000 can be set to be equal, the shapes of the touch electrode blocks can be set to be the same, so that touch blind areas can be reduced, the touch detection sensitivity can be improved, and meanwhile, the touch detection uniformity of the whole touch display panel can be improved by the fact that the forward projection areas of the touch electrode blocks 10 to the light-emitting surface of the touch display panel 000 are equal and the shapes of the touch electrode blocks are the same, and the touch performance is improved.
In some alternative embodiments, with continuing reference to fig. 2 and fig. 5, in the touch signal lines 20 connected to the touch electrode blocks 10 of each touch electrode row 10H in the present embodiment, the first sub-lines 201 are located on a side of the touch electrode row 10H close to the first edge E1.
The embodiment further explains that each touch signal line 20 includes a first sub-line 201 and a second sub-line 202 connected to each other, the first sub-line 201 is located in the display area AA, the second sub-line 202 is located in the non-display area NA, that is, in each touch signal line 20 connected to each touch electrode block 10, only the first sub-line 201 runs through the display area AA, and the remaining second sub-line 202 runs through the non-display area NA (frame area), at this time, in the touch signal line 20 connected to each touch electrode block 10 of each touch electrode row 10H, the first sub-line 201 is located on the side of the row touch electrode row 10H close to the first edge E1, so that the distribution of the first sub-line 201 of the touch signal line 20 can be uniform, and since the touch electrode blocks 10 of the same touch electrode row 10H are distributed in a staggered step shape, a sufficient space can be provided for the first sub-line 201 on the side of each touch electrode row 10H close to the first edge E1 in the display area AA, therefore, short circuit between the touch signal lines 20 can be avoided, and meanwhile, the touch signal lines 20 can be prevented from occupying the layout area of the touch electrode blocks 10 in the display area AA.
In some alternative embodiments, with continuing reference to fig. 3 and 4, in the present embodiment, in the touch signal lines 20 connected to the touch electrode blocks 10 of each touch electrode row 10H, the first sub-line 201 is located on a side of the touch electrode row 10H away from the first edge E1.
The embodiment further explains that each touch signal line 20 includes a first sub-line 201 and a second sub-line 202 connected to each other, the first sub-line 201 is located in the display area AA, the second sub-line 202 is located in the non-display area NA, that is, in each touch signal line 20 connected to each touch electrode block 10, only the first sub-line 201 runs through the display area AA, and the remaining second sub-line 202 runs through the non-display area NA (frame area), at this time, in the touch signal line 20 connected to each touch electrode block 10 of each touch electrode row 10H, the first sub-line 201 is located on the side of the row of touch electrode row 10H away from the first edge E1, so that the distribution of the first sub-line 201 of the touch signal line 20 can be uniform, and since the touch electrode blocks 10 of the same touch electrode row 10H are distributed in a staggered step shape, a sufficient space can be provided for the first sub-line 201 on the side of each touch electrode row 10H away from the first edge E1 in the display area AA, therefore, short circuit between the touch signal lines 20 can be avoided, and meanwhile, the touch signal lines 20 can be prevented from occupying the layout area of the touch electrode blocks 10 in the display area AA.
In some alternative embodiments, please refer to fig. 7, fig. 7 is a schematic plan view illustrating another touch display panel according to an embodiment of the present invention, in which in the present embodiment, the distances H0 between two adjacent touch electrode rows 10H are equal along the second direction Y.
In the present embodiment, it is further explained that in the layout design of the multiple touch electrode blocks 10, for the same touch electrode row 10H, the distance L1 from each touch electrode block 10 to the first edge E1 is gradually decreased and the distance L2 from each touch electrode block 10 to the second edge E2 is gradually increased along the third edge E3 toward the fourth edge E4, that is, the multiple touch electrode blocks 10 are not only distributed in a staggered manner in a step shape in the first direction X, but also the distance H0 between two adjacent touch electrode rows 10H is equal in the second direction Y, at this time, the distance H0 between two adjacent touch electrode rows 10H is equal, that is, the distance between two touch electrode blocks 10 in the same touch electrode column in two adjacent touch electrode rows 10H is H1, the distance between two touch electrode blocks 10 in any other touch electrode column in the two adjacent touch electrode rows 10H is H2, h1 is equal to H2, so that the touch electrode rows 10H can be uniformly distributed in the second direction Y, sufficient space is provided for the first sub-lines 201 connected to each touch electrode row 10H to trace in the display area AA, and meanwhile, no extra space is wasted, which is beneficial to improving the display quality of the panel.
In some alternative embodiments, please refer to fig. 7 and fig. 8 in combination, where fig. 8 is an enlarged schematic view of a partial structure of fig. 7, in this embodiment, in the second direction Y, a difference between distances from two adjacent touch electrode blocks 10 of the same touch electrode row 10H to the first edge E1 is C, and a distance from two adjacent first sub-lines 201 is D, where C is D.
This embodiment further explains that, in the second direction Y, the distances from two adjacent touch electrode blocks 10 of the same touch electrode row 10H to the first edge E1 are L11 and L12, respectively, the absolute value of the difference between L11 and L12 is C, the difference between the distances from two adjacent touch electrode blocks 10 of the same touch electrode row 10H to the first edge E1 is equal to the distance between two adjacent first sub-lines 201 is D, so that the staggered distance C can be ensured to be equal to the distance D between two adjacent first sub-lines 201 while the touch electrode blocks 10 of each of the same touch electrode row 10H are staggered step by step, and because the touch electrode blocks 10 are disposed on the same layer as the first sub-lines 201, the same first sub-line 201 can be prevented from being electrically overlapped with two or more touch electrode blocks 10, thereby preventing the touch detection accuracy from being reduced, the touch performance can be further improved.
In some optional embodiments, please refer to fig. 9, where fig. 9 is a schematic plan view illustrating a planar structure of another touch display panel according to an embodiment of the present invention, in this embodiment, the non-display area NA includes a binding area BA, the binding area BA is located on one side of the display area AA along the second direction Y, and the binding area BA is disposed adjacent to the first edge E1;
the bonding area BA includes a plurality of signal input terminals IN, and the touch electrode block 10 is electrically connected to the signal input terminals IN through the touch signal lines 20.
This embodiment further illustrates that, IN the first edge E1, the second edge E2, the third edge E3, and the fourth edge E4 of the touch display panel 000, the first edge E1 is an edge disposed adjacent to a bonding area BA, the bonding area BA is used for bonding a driver chip (i.e., a touch detection chip 30, not illustrated IN fig. 9), a plurality of signal input terminals IN (conductive pads) are disposed IN the bonding area BA, each touch electrode block 10 is electrically connected to each signal input terminal IN of the bonding area BA through a touch signal line 20 (not illustrated IN the drawings, and IN an embodiment, the bonding area BA can be implemented by bending the second sub-line 202), specifically, each touch electrode block 10 is electrically connected to the first sub-line 201 of the touch signal line 20, and the second sub-line 202 of the touch signal line 20 is electrically connected to each signal input terminal IN of the bonding area BA through the non-display area NA, so that the first sub-line 201 and the second sub-line 202 of the touch signal line 20 are electrically connected to the touch detection chip 30 through the touch electrode block 10 And transmitting the touch signal.
In some optional embodiments, please continue to refer to fig. 9, in the embodiment, the mth row of touch electrode rows 10HmEach touch electrode block 10mConnected touch signal line 20mMiddle, first sub-line 201mAre all located in the mth row of touch electrode row 10HmThe second sub-line 202 is away from the first edge E1mLocated in the second non-display area NA 2;
m +1 th row of touch electrode rows 10Hm+1Each touch electrode block 10m+1Connected touch signal line 20m+1Middle, first sub-line 201m+1Are all positioned in the (m + 1) th row of touch electrode rows 10Hm+1Close toOn the side of the first edge E1, the second sub-line 202m+1Located in the first non-display area NA 1; wherein m is an odd number.
The present embodiment further explains that, among the first edge E1, the second edge E2, the third edge E3, and the fourth edge E4 of the touch display panel 000, the first edge E1 is an edge disposed adjacent to a bonding area BA used for bonding a driving chip (i.e., a touch detection chip 30, not illustrated IN fig. 9), each touch electrode block 10 is electrically connected to the first sub-line 201 of the touch signal line 20, and the second sub-line 202 of the touch signal line 20 is electrically connected to each signal input terminal IN of the bonding area BA through the non-display area NA, so as to realize transmission of touch signals between the touch electrode block 10 and the touch detection chip 30 through the first sub-line 201 and the second sub-line 202 of the touch signal line 20. At this time, each touch electrode row 10H in the display area AA can be divided into odd and even rows, wherein the mth row of touch electrode rows 10HmOdd rows, m +1 th row of touch electrode rows 10Hm+1The number of the rows is even, each second sub-line 202 of the touch signal line 10 connected to each touch electrode row 10 is divided into two groups, namely a left sub-line 202 and a right sub-line 202, and the second sub-lines are located in the second non-display area NA2mThe mth row touch electrode rows 10H for connecting (driving) the odd rowsmEach touch electrode block 10mA second sub-line 202 positioned in the first non-display area NA1m+1 Touch electrode rows 10H for connecting (driving) the m +1 th rows of the even-numbered rowsm+1Each touch electrode block 10m+1Accordingly, the space of the first non-display area NA1 and the second non-display area NA2 on opposite sides of the display area AA can be made uniform and reasonable. The embodiment will also connect (drive) each mth row of touch electrode rows 10H of the odd rowsmEach touch electrode block 10m First sub-line 201 ofm Touch electrode row 10H from the m-th rowmThe side away from the first edge E1 is routed to connect each m-th touch electrode row 10H of the odd-numbered rowsmEach touch electrode block 10m First sub-line 201 ofmAre all from the m-th row of touch electrode rows 10H in FIG. 9mAnd connect each (m + 1) th touch electrode row 10H of the even-numbered rowsm+1Each touch electrode block 10m+1 First sub-line 201 ofm+1Are all from m +1 th row of touch electrode row 10H in FIG. 9m+1The characteristic that each touch electrode block 10 of the same touch electrode row 10H is distributed in a staggered manner in a ladder shape is fully utilized, and the ladder-shaped space between two adjacent touch electrode rows 10H is reasonably utilized, so that the requirements for improving the touch detection sensitivity and the overall uniformity of touch detection are met, the touch performance is improved, and meanwhile, the design structure of arranging the touch electrode blocks 10 and the touch signal lines 20 in a single layer is facilitated to be optimized.
In some optional embodiments, referring to fig. 10, fig. 10 is a schematic plan view of another touch display panel provided in the embodiments of the present invention, in which an mth row of touch electrode rows 10H is arranged along a second direction Y in the present embodimentmAnd the (m + 1) th touch electrode row 10Hm+1The distance between the touch electrodes is A, and the (m + 1) th row of touch electrodes is 10Hm+1And the m +2 th touch electrode row 10Hm+2The distance between the two is B which is more than or equal to A.
This embodiment further explains that, when each touch electrode row 10H in the display area AA is divided into odd-numbered rows and even-numbered rows, each mth-row touch electrode row 10H in the odd-numbered rows is connected (driven)mEach touch electrode block 10mFirst sub-line 201 ofmTouch electrode row 10H from the m-th rowmThe side away from the first edge E1 is routed to connect each m-th touch electrode row 10H of the odd-numbered rowsmEach touch electrode block 10mFirst sub-line 201 ofmAre all from the mth row of touch electrode row 10H in FIG. 10mAnd connect each (m + 1) th touch electrode row 10H of the even-numbered rowsm+1Each touch electrode block 10m+1First sub-line 201 ofm+1Are all from m +1 th row of touch electrode row 10H in FIG. 10m+1The lines are arranged below the touch electrode blocks, so that the characteristic that the touch electrode blocks 10 of the same touch electrode row 10H are distributed in a stepped staggered manner is fully utilized, and the stepped space between two adjacent touch electrode rows 10H is reasonably utilized, so that the touch detection sensitivity and the overall uniformity of touch detection are improved, the touch performance is improved, and the single-layer layout of the touch electrode blocks 1 is favorably optimized0 and touch signal lines 20. As shown in FIG. 10, the m-th touch electrode rows 10H of the odd-numbered rows are connectedmEach touch electrode block 10mFirst sub-line 201 ofmAre all from the mth row of touch electrode row 10H in FIG. 10mAnd connect each (m + 1) th touch electrode row 10H of the even-numbered rowsm+1Each touch electrode block 10m+1First sub-line 201 ofm+1Are all from m +1 th row of touch electrode row 10H in FIG. 10m+1The mth row of touch electrode rows 10HmAnd the (m + 1) th touch electrode row 10Hm+1There is no first sub-line 201 to be routed between them, so the touch electrode row 10H in the mth row and along the second direction Y is arranged in this embodimentmAnd the (m + 1) th touch electrode row 10Hm+1The distance between the touch electrodes is A, and the (m + 1) th row of touch electrodes is 10Hm+1And the m +2 th touch electrode row 10Hm+2The distance between the touch electrode rows is B, B is more than or equal to A, so that the m +1 th touch electrode row 10H can be ensured to the greatest extentm+1And the m +2 th touch electrode row 10Hm+2The m-th row of touch electrode rows 10H without wires can be reduced while the first wires 201 are not short-circuited therebetweenmAnd the (m + 1) th touch electrode row 10Hm+1The space between the electrodes is beneficial to improving the rationalization of wiring space, more space can be reserved for arranging the touch electrode blocks 10, and the touch performance is further improved.
In some optional embodiments, please refer to fig. 11, where fig. 11 is a schematic plan view illustrating a display device according to an embodiment of the present invention, and the display device 111 according to the embodiment includes the touch display panel 000 according to the above embodiment of the present invention. The embodiment of fig. 11 only takes a mobile phone as an example to describe the display device 111, and it should be understood that the display device 111 provided in the embodiment of the present invention may be another display device 111 with a display function, such as a computer, a television, and a vehicle-mounted display device, and the present invention is not limited thereto. The display device 111 provided in the embodiment of the present invention has the beneficial effects of the touch display panel 000 provided in the embodiment of the present invention, and specific descriptions of the touch display panel 000 in the above embodiments may be specifically referred to, and this embodiment is not described herein again.
As can be seen from the above embodiments, the touch display panel and the display device provided by the present invention at least achieve the following beneficial effects:
the touch display panel belongs to a self-capacitance sensing type touch display panel, and a touch electrode block in the touch display panel and a touch signal line electrically connected with the touch electrode block are arranged on the same layer, and the touch display panel belongs to a mode of arranging a touch structure on a single layer. Among a plurality of touch electrode blocks arranged in an array, the touch electrode blocks arranged along a first direction form a touch electrode row, the touch electrode rows are sequentially arranged along a second direction, for the same touch electrode row, the distance from each touch electrode block to a first edge is gradually reduced, the distance from each touch electrode block to a second edge is gradually increased, namely, each touch electrode block of the same touch electrode row is distributed in a step-shaped staggered manner, in each touch signal line connected with each touch electrode block, only a first sub-line walks a display area, the rest second sub-lines walks a non-display area (a frame area), and each touch electrode block of the same touch electrode row is distributed in a step-shaped staggered manner, so that enough space can be provided for each first sub-line in the display area, and therefore, short circuit routing among the touch signal lines can be avoided, the layout area of the touch electrode blocks in the display area occupied by the touch signal lines can be avoided, the layout area of the touch electrode blocks in the touch blind areas in the related technology can be increased, the areas of the touch electrode blocks tend to be consistent as much as possible, the touch blind areas can be reduced as much as possible, the touch detection sensitivity and the overall uniformity of touch detection can be improved, and the touch performance can be improved.
Although some specific embodiments of the present invention have been described in detail by way of examples, it should be understood by those skilled in the art that the above examples are for illustrative purposes only and are not intended to limit the scope of the present invention. It will be appreciated by those skilled in the art that modifications may be made to the above embodiments without departing from the scope and spirit of the invention. The scope of the invention is defined by the appended claims.
Claims (13)
1. A touch display panel, comprising: the touch display panel comprises a first edge and a second edge which are oppositely arranged in a second direction, and further comprises a third edge and a fourth edge which are oppositely arranged in the first direction; wherein the second direction intersects the first direction;
the display area comprises a plurality of touch electrode blocks which are arranged in an array, each touch electrode block is electrically connected with at least one touch signal line, and the touch signal lines electrically connected with different touch electrode blocks are different; the touch electrode blocks arranged along the first direction form a touch electrode row, and the touch electrode rows are sequentially arranged along the second direction;
for the same touch electrode row, pointing to the fourth edge along the third edge, wherein the distance from each touch electrode block to the first edge gradually decreases, and the distance from each touch electrode block to the second edge gradually increases;
each touch signal line comprises a first sub line and a second sub line which are connected with each other, the first sub line is located in the display area, and the second sub line is located in the non-display area.
2. The touch display panel of claim 1,
the non-display area comprises a first non-display area and a second non-display area which are positioned on two opposite sides of the display area, the first non-display area is arranged adjacent to the third edge, and the second non-display area is arranged adjacent to the fourth edge;
the second sub line is located in the first non-display area and/or the second non-display area.
3. The touch display panel according to claim 1, wherein an area of a forward projection of each touch electrode block to a light exit surface of the touch display panel is equal.
4. The touch display panel according to claim 1, wherein the length of the orthographic projection of each touch electrode block to the light exit surface of the touch display panel in the first direction is equal, and the length of the orthographic projection of each touch electrode block to the light exit surface of the touch display panel in the second direction is equal.
5. The touch display panel according to claim 1, wherein in the touch signal line connected to each touch electrode block of each touch electrode row, the first sub-line is located on a side of the touch electrode row close to the first edge.
6. The touch display panel according to claim 1, wherein in the touch signal line connected to each touch electrode block of each touch electrode row, the first sub-line is located on a side of the touch electrode row away from the first edge.
7. The touch display panel according to claim 1, wherein the distance between two adjacent touch electrode rows along the second direction is equal.
8. The touch display panel of claim 1,
in the second direction, the difference between the distances from two adjacent touch electrode blocks in the same touch electrode row to the first edge is C, the distance from two adjacent first sub-lines is D, and C is D.
9. The touch display panel of claim 1,
the non-display area comprises a binding area, the binding area is positioned on one side of the display area along the second direction, and the binding area is arranged adjacent to the first edge;
the binding area comprises a plurality of signal input ends, and the touch electrode block is electrically connected with the signal input ends through the touch signal lines.
10. The touch display panel of claim 9,
in the touch signal lines connected with the touch electrode blocks in the mth row of touch electrode rows, the first sub-lines are located on one side, away from the first edge, of the mth row of touch electrode rows, and the second sub-lines are located in the second non-display area;
in the touch signal lines connected with the touch electrode blocks of the (m + 1) th row of touch electrode lines, the first sub-lines are positioned on one side, close to the first edge, of the (m + 1) th row of touch electrode lines, and the second sub-lines are positioned in the first non-display area;
wherein m is an odd number.
11. The touch display panel according to claim 10, wherein, along the second direction, a distance between the m-th row of touch electrode rows and the m + 1-th row of touch electrode rows is a, a distance between the m + 1-th row of touch electrode rows and the m + 2-th row of touch electrode rows is B, and B is greater than or equal to a.
12. The touch display panel according to claim 1, wherein the touch electrode block and the touch signal line are disposed on the same layer.
13. A display device comprising the touch display panel according to any one of claims 1 to 12.
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