CN111857412B - Display panel and display device - Google Patents
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- CN111857412B CN111857412B CN202010621291.1A CN202010621291A CN111857412B CN 111857412 B CN111857412 B CN 111857412B CN 202010621291 A CN202010621291 A CN 202010621291A CN 111857412 B CN111857412 B CN 111857412B
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- G—PHYSICS
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- 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
- G06F3/0416—Control or interface arrangements specially adapted for digitisers
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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
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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
- G06F3/0443—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means using a single layer of sensing electrodes
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Abstract
The invention discloses a display panel and a display device. The display panel comprises a display area and a non-display area surrounding the display area, the non-display area comprises a binding area arranged on one side of the display area, and the direction of the display area pointing to the binding area is a first direction; the plurality of sensing electrode columns arranged along the second direction in the display area comprise a plurality of mutually insulated sensing electrode blocks arranged along the first direction, wherein the second direction is crossed with the first direction; the plurality of sensing electrode blocks comprise a first sensing electrode block close to the binding region and a second sensing electrode block far away from the binding region, the size of the first sensing electrode block in the second direction is smaller than that of the second sensing electrode block in the second direction, and the areas of the sensing electrode blocks are equal. The shape of the sensing electrode blocks is set in a differentiated mode on the premise that the areas of the sensing electrode blocks are equal, so that the areas of the sensing touch electrode blocks are increased, touch blind areas of wiring areas are reduced, and touch performance is improved.
Description
Technical Field
The invention relates to the technical field of display, in particular to a display panel and a display device.
Background
With the development of display technology, people have higher and higher requirements on the touch performance of a display screen, wherein a single-layer mutual capacitance type touch screen has simple process and greatly improved cost because a touch electrode and a touch electrode lead are positioned on the same layer; when a finger touches the display screen, the touch position of the finger on the display screen can be quickly judged by detecting the change of the capacitance.
However, since the touch electrode leads and the touch electrodes in the single-layer mutual capacitance touch display screen adopt the same process, the touch electrode leads greatly occupy the effective touch area, and the effective touch area occupied by the touch electrode leads becomes a touch blind area, so that the problems of finger touch sensing failure or touch sensitivity reduction are caused, and the user experience is seriously influenced.
Disclosure of Invention
The embodiment of the invention provides a display panel and a display device, which reduce touch blind areas and increase touch sensitivity by setting touch electrode blocks differently.
The embodiment of the invention provides a display panel, which comprises a display area and a non-display area surrounding the display area, wherein the non-display area comprises a binding area arranged on one side of the display area, and the direction of the display area pointing to the binding area is a first direction;
the display area comprises a plurality of driving electrode columns and a plurality of sensing electrode columns which are arranged along a second direction, the sensing electrode columns comprise a plurality of mutually insulated sensing electrode blocks which are arranged along a first direction, and the second direction is crossed with the first direction;
the plurality of sensing electrode blocks comprise a first sensing electrode block close to the binding region and a second sensing electrode block far away from the binding region, the size of the first sensing electrode block in the second direction is smaller than that of the second sensing electrode block in the second direction, and the areas of the sensing electrode blocks are equal.
Based on the same inventive concept, the embodiment of the invention further provides a display device, which comprises the display panel provided by any embodiment of the invention.
According to the display panel provided by the embodiment of the invention, the width of the first sensing electrode block close to the binding region in the second direction is smaller than the width of the second sensing electrode block far away from the binding region in the second direction, and the areas of the sensing electrode blocks are ensured to be equal, so that the shapes of the sensing electrode blocks are arranged in a differentiated manner on the premise that the areas of the sensing electrode blocks are equal, the area of the sensing touch electrode blocks is increased, the touch dead zone of the wiring region is reduced, and the touch sensitivity is increased.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and those skilled in the art can also obtain other drawings according to the drawings without inventive labor.
FIG. 1 is a diagram of a display panel in the related art;
fig. 2 is a schematic plan view of a display panel according to an embodiment of the present invention;
FIG. 3 is a schematic plan view of a display panel according to an embodiment of the present invention;
FIG. 4 is a schematic plan view of a display panel according to an embodiment of the present invention;
FIG. 5 is a schematic plan view of a display panel according to another embodiment of the present invention;
FIG. 6 is a schematic plan view of a display panel according to an embodiment of the present invention;
FIG. 7 is a schematic plan view of a display panel according to an embodiment of the present invention;
FIG. 8 is a schematic plan view of a display panel according to an embodiment of the present invention;
fig. 9 is a schematic plan view illustrating another structure of a display panel according to an embodiment of the present invention;
fig. 10 is a schematic view of a display device according to an embodiment of the invention.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, the present invention is further described in conjunction with the accompanying drawings and examples.
It should be noted that in the following description, specific details are set forth in order to provide a thorough understanding of the present invention. The invention can be implemented in numerous ways other than as described herein, and various embodiments can be implemented in combination without departing from the scope of the invention. Those skilled in the art can now make similar generalizations without departing from the scope of the invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.
It should be understood that although the terms first, second, etc. may be used to describe the touch electrode blocks located at different regions in the embodiments of the present invention, the touch electrode blocks should not be limited by these terms. These terms are only used to distinguish the respective touch electrode blocks located at different positions from each other. For example, a first sense electrode block may also be referred to as a second sense electrode block, and similarly, a second sense electrode block may also be referred to as a first sense electrode block without departing from the scope of embodiments of the present invention.
In order to solve the problem that touch failure or touch transition decline is caused by incapability of realizing touch due to blind areas generated by touch electrode signal lines, the embodiment of the invention makes the following researches:
as shown in fig. 1, fig. 1 is a schematic diagram of a display panel in the related art, and as shown in fig. 1, a partial schematic diagram of a touch layer of a display panel 100 ' is shown, where the touch layer includes a driving electrode 10 ' and a sensing electrode 20 ', the sensing electrode 20 ' includes a plurality of sensing electrode blocks 201 ', each sensing electrode block 201 ' is electrically connected to a corresponding sensing electrode signal line 202 ', and a wiring region 22 ' formed by a plurality of sensing electrode lines 202 ' is located in the touch layer, so that an effective touch region of the touch layer is occupied by the wiring region, a touch dead region is generated, and a problem of touch failure or sensitivity reduction due to inaccurate touch sensing in a partial display region is caused.
The inventor designs the following technical scheme aiming at the problems:
an embodiment of the present invention provides a display panel, as shown in fig. 2 and fig. 3, fig. 2 is a schematic plan structure diagram of the display panel provided in the embodiment of the present invention, and fig. 3 is a schematic plan partial diagram of the display panel provided in the embodiment of the present invention, as shown in fig. 2, the display panel 100 includes a display area AA and a non-display area VA surrounding the display area AA, the non-display area VA includes a binding area BA disposed on one side of the display area AA, and a direction in which the display area AA points at the binding area BA is a first direction Y;
it is understood that the bonding area BA includes a plurality of signal pins, and a plurality of signal lines on the display panel are bonded to the control chip IC on the flexible circuit board through the signal pins, so as to transmit signals to the respective signal lines through the driving chip IC.
As shown in fig. 3, the display area AA includes a plurality of driving electrode columns 3 and a plurality of sensing electrode columns 4 arranged along a second direction X, and the sensing electrode columns 4 include a plurality of mutually insulated sensing electrode blocks 40 arranged along a first direction Y, wherein the second direction and the first direction cross; the display panel AA further includes a plurality of driving signal lines 301 and a plurality of sensing signal lines 401 extending along the first direction Y, and one sensing electrode block 30 is electrically connected to one sensing signal line 301; one driving electrode column includes at least one driving electrode block 30 arranged in the first direction Y; it can be understood that, in the touch detection stage, a touch driving voltage signal is applied to one driving electrode block, and then one driving electrode block and at least one sensing electrode block in one sensing electrode column form a capacitor respectively.
Specifically, the plurality of sensing electrode blocks 40 include a first sensing electrode block 41 close to the bonding area BA and a second sensing electrode block 42 far from the bonding area BA, a size of the first sensing electrode block 41 in the second direction X is smaller than a size of the second sensing electrode block 42 in the second direction X, and areas of the sensing electrode blocks 40 are equal.
Optionally, with reference to fig. 3, the sensing electrode block 40 is a square block electrode, a dimension of the first sensing electrode block 41 along the second direction X, that is, a width of the first sensing electrode block 41 along the second direction X, is L1, a dimension of the second sensing electrode block 42 along the second direction X, that is, a width is L2, where L1 is smaller than L2, and areas of the first sensing electrode block 41 and the second sensing electrode block 42 are equal.
It can be understood that, in single-layer mutual capacitance touch, the sensing signal lines and the touch electrode layer are arranged on the same layer, so that the sensing signal lines occupy a certain area of arrangement space, the arrangement area of the touch electrode is greatly reduced, and the sensitivity of the touch performance is obviously affected; meanwhile, each sensing electrode block is correspondingly and electrically connected with one sensing signal line, a plurality of sensing signal lines can form a wiring space of a certain area, and the wiring width close to the binding area is almost equal to the wiring width far away from the binding area; however, due to the wiring manner of the sensing signal lines, the density of the sensing signal lines close to the bonding area is high, and the density of the sensing signal lines far from the bonding area is low, so that the wiring area far from the bonding area has a low density of the sensing signal lines and occupies a large wiring width, and the unreasonable utilization of the sensing signal lines wastes a touch space, thereby compressing the setting space of the touch electrode.
It should be noted here that the touch electrode layer in the present application includes touch electrodes and touch signal lines, the touch electrodes include driving electrode columns and sensing electrode columns in the present application, and the touch electrode blocks include respective sensing electrode blocks in the sensing electrode columns and electrode blocks in the driving electrode columns. The above-mentioned "corresponding electrical connection" may be understood as one-to-one corresponding electrical connection of one sensing electrode block and one sensing signal line.
In the embodiment of the invention, the areas of the sensing electrode blocks are set to be equal, so that the consistency of the touch signals of each touch block is ensured, the signal processing difficulty is reduced, and the processing difficulty of the touch driving chip is reduced. Meanwhile, the shapes of the sensing electrode blocks are arranged in a differentiated mode, the width of the first sensing electrode block close to one side of the binding area is smaller than that of the second sensing electrode block far away from one side of the binding area, the layout of the touch electrode blocks can be optimized to the greatest extent by utilizing the wiring mode of a single-layer touch signal line in the display panel, the area of the sensing electrode blocks is increased by utilizing the space of a touch blind area, and in the mutual capacitance type touch display panel, after a finger contacts the electrode blocks, the coupling capacitance between the driving electrode and the sensing electrode can be reduced, and the reduced capacitance is fed back to the touch driving chip; after the area of the sensing electrode block is increased, the capacitance between the finger and the touch pad is increased outside the original touch electrode block, and the increased capacitance is arranged in a parallel connection mode, so that the total coupling capacitance is reduced finally, the capacitance signal change value received by the touch driving chip is increased, the induction intensity is increased, the accuracy of the touch signal is improved, and the signal noise is reduced.
In the embodiment of the invention, each driving electrode block, each sensing electrode block and a plurality of sensing signal lines are manufactured in the same process. Optionally, the driving electrode block, the sensing electrode block and the sensing signal line are made of inorganic non-metallic materials or metal materials. The inorganic nonmetal material can be transparent material, such as indium tin oxide. The metal material includes: any one or more of titanium, aluminum, molybdenum and nano silver.
Optionally, the driving electrode block, the sensing electrode block and the sensing signal line may be made of a single metal layer, or may be made of two or three metal layers. Such as: titanium/aluminum two-layer metal, aluminum/molybdenum two-layer metal, titanium/aluminum/titanium three-layer metal, and the like.
In one embodiment, the driving electrode block and the sensing electrode block are both grid-shaped touch electrodes, wherein one grid-shaped touch electrode is overlapped with a plurality of sub-pixels in the direction perpendicular to the display panel, the grid-shaped touch electrode comprises a plurality of openings, the openings expose light emitting areas of the pixels, light shielding of the driving electrode block and the sensing electrode block on light can be reduced, light loss caused by the fact that the light penetrates through the touch electrode layer during display is reduced, and the brightness of the display panel is guaranteed. Especially for the driving electrode and the sensing electrode made of metal materials, the design of the latticed touch electrode can effectively reduce light loss caused by light penetrating through the metal layer, and the brightness of the display panel is ensured while the touch performance is ensured.
The display panel provided by the embodiment of the invention can be an organic light-emitting display panel and can also be a liquid crystal display panel. In an embodiment, the display panel is a flexible organic light emitting display panel, and the driving electrodes and the sensing electrodes in the display panel are both the grid-shaped touch electrodes. The manufacturing material of the grid-shaped touch electrode can be a metal material with good conductivity and extensibility, so that the brightness of the display panel can be ensured, the driving electrode blocks, the sensing signal lines and the like are not easy to break in the bending process of the panel, and the reliability of the touch performance is ensured.
In some alternative embodiments, the widths of the plurality of sensing electrode blocks in the second direction X gradually decrease along the first direction Y, please refer to fig. 4, fig. 4 is another schematic plan view of a part of a display panel provided in an embodiment of the present invention, in which the widths of the sensing electrode blocks 40 in the second direction X gradually decrease along the first direction Y, that is, a direction close to the bonding region, and optionally, the widths of the sensing electrode blocks 40 in the second direction X gradually decrease in an equal difference manner along the direction close to the bonding region.
It can be understood that, in the first direction Y, the closer the sensing electrode 40 is to the bonding area BA, the shorter the length of the sensing signal line 401 correspondingly connected to the sensing electrode 40 is, and at the same time, the greater the number of the sensing signal lines 401 arranged in the area, the wider the width occupied by the sensing signal line (in the second direction X), that is, in the direction close to the bonding area BA, the width of the wiring area 60 formed by the sensing signal line 401 in the second direction X gradually increases, and also in the direction close to the bonding area BA, the width of the electrode area formed by the sensing electrode 40 in the second direction X gradually decreases, so that, by the complementation of the widths of the wiring area and the electrode area, the dead area of the wiring area can be fully utilized by the sensing electrode, the space occupied by the wiring area is maximally decreased, thereby increasing the area of the sensing electrode and decreasing the touch blind area, the touch sensitivity is improved.
In an alternative embodiment, the scheme is that along the first direction, the widths of the sensing electrode blocks in the first direction are gradually increased. With reference to fig. 4, in the first direction Y along the display area AA pointing to the bonding area BA, the width of the sensing electrode block 401 along the first direction Y gradually increases, as shown in fig. 3, the first direction Y along the display area AA pointing to the bonding area BA includes a first sensing electrode block 41 close to the bonding area BA and a second sensing electrode block 42 far from the bonding area BA, and the width d1 of the first sensing electrode block 41 along the first direction Y is greater than the width d2 of the second sensing electrode block 42 along the first direction Y, so as to ensure that the touch areas of the sensing electrode blocks are the same, and simplify the process.
In an alternative embodiment, please refer to fig. 5, fig. 5 is a partial schematic plan view of a display panel according to an embodiment of the present invention, in the display panel 100, a driving electrode row 3 and a sensing electrode row 4 adjacent to each other form a touch electrode group 5, and the touch electrode group 5 is arranged along a second direction X; wherein the drive electrode column 3 and the sense electrode column 4 are arranged in the same layer. In the display panel, the driving electrode rows 3 and the sensing electrode rows 4 are alternately arranged along the second direction X, so that the driving electrode rows and the sensing electrode rows are more uniformly distributed on the display panel, and the touch performance of the display panel is improved.
In another alternative embodiment, referring to fig. 6, fig. 6 is a partial schematic plan view of another display panel provided by the embodiment of the present invention, as shown in fig. 6, a sensing electrode block 40 includes a first sub sensing electrode block 402 and a second sub sensing electrode block 403 which are electrically connected, the first sub sensing electrode block 402 and the second sub sensing electrode block 403 are arranged along the second direction X, and the second sub sensing electrode block 403 is disposed on a side of the first sub sensing electrode block 402 away from the driving electrode column 3 in the touch electrode group 5 where the first sub sensing electrode block is located. One sensing electrode block is electrically connected to one sensing signal line, as shown in fig. 6, the sensing signal line 401 may be electrically connected to the second sub sensing electrode block 403; or the sensing signal line may be electrically connected to the first sub-sensing electrode block 402.
With reference to fig. 6, the first sub-sensing electrode blocks 402 have the same shape and the same area. Since the first sub-sensing electrode block 402 is closer to the driving electrode row 3, in the mutual capacitance type touch manner, the first sub-sensing electrode block can generate a stronger touch capacitance with the driving electrode than the second sub-sensing electrode block, and therefore, the signal strength of the capacitance generated by the driving electrode and the sensing electrode is mainly concentrated on the signal strength between the driving electrode and the first sub-sensing electrode block; in the embodiment of the invention, the areas of the first sub-sensing electrode blocks 402 are equal, and the shapes of the first sub-sensing electrode blocks are the same, so that the opposite side lengths of the driving electrode array and the first sub-sensing electrode blocks are equal, thereby ensuring that the signal intensities between the driving electrode array and the first sub-sensing electrode blocks are the same, balancing that the signal intensities of the touch capacitors between the driving electrode and the sensing electrode blocks are approximately consistent, and ensuring the uniformity of touch performance.
Optionally, with reference to fig. 6, in the present embodiment, each of the second sub-sensing electrode blocks 403 is square, and may be rectangular or square; meanwhile, along the first direction Y, the widths of the at least two second sub-sensing electrode blocks 403 in the second direction X decrease progressively; it should be noted that, in the first direction Y, two second sub-sensing electrode blocks 403 are included, or the widths of a plurality of second sub-sensing electrode blocks 403 in the second direction X decrease progressively, or the widths of all the second sub-sensing electrode blocks 403 in the second direction decrease progressively.
Optionally, the widths of the second sub-sensing electrode blocks 403 in the second direction X are decreased with equal difference. The width of the electrode area formed by each sensing electrode block along the second direction X is ensured to be narrowed in the direction close to the binding area, the arrangement mode of the touch electrode blocks is optimized, and the touch sensitivity is improved.
In another alternative embodiment, referring to fig. 7, fig. 7 is a partial schematic plan view of a display panel provided in an embodiment of the invention, as shown in fig. 7, at least one sensing electrode block 40 is in the shape of a trapezoid, two parallel edges of the trapezoid extending along a first direction Y; along the first direction Y, the width of the sensing electrode block 40 in the second direction X decreases progressively; in this embodiment, set up all sensing electrode pieces and be right trapezoid, can understand, the parallel base and the topside of right trapezoid with first direction Y is parallel, distance between topside and the base, and right trapezoid's height reduces along first direction Y gradually promptly, has guaranteed the differentiation setting of touch electrode piece width, and wiring blind area that can make full use of touch signal line improves the sensitivity of touch-control.
With reference to fig. 7, it is defined that the side lengths of the opposite sides of the driving electrode rows 3 in the touch electrode group 5 of each sensing electrode block 40 are equal, that is, in this embodiment, the side lengths of the bottom sides of each right trapezoid are equal, so as to balance that the touch capacitance signal intensities between the driving electrodes and each sensing electrode block are approximately consistent, and ensure the uniformity of the touch performance.
In addition, the shape of each sensing electrode block is not limited to a right trapezoid, and meanwhile, the sensing electrode blocks can also be isosceles trapezoids, so that the longer bottom edge is enabled to be close to the driving electrode row in parallel, the shorter top edge is enabled to be far away from the driving electrode row, the distance advantage can be fully utilized, the longer bottom edge in each sensing electrode block and the driving electrode form a stronger capacitance signal, and the sensitivity of touch recognition is enhanced.
In another alternative embodiment, please refer to fig. 8, fig. 8 is a partial schematic plan view of a display panel according to an embodiment of the present invention, as shown in fig. 8, the driving electrode array 3 includes at least two electrically isolated driving electrode blocks 30 arranged along the first direction Y, and one driving electrode block 30 is electrically connected to one of the driving signal lines 301; in the second direction X, one driving electrode block 30 faces at least one sensing electrode block 40; for example, referring to fig. 8 in particular, the driving electrode column 3 includes two driving electrode blocks 30, which is not limited to two, and may even be multiple driving electrode blocks, so as to improve the recognition accuracy of touch; illustratively, one drive electrode block 30 may face three sense electrode blocks 40, and "facing" herein may be understood to mean that one drive electrode block 30 and the sides of three sense electrode blocks 40 form a capacitor.
Further, in the first direction Y, the driving electrode block 30 includes a first driving electrode block 31 close to the bonding area BA and a second driving electrode block 32 far from the bonding area BA; wherein, the dimension L3 of the first driving electrode block 31 along the second direction X is smaller than the dimension L4 of the second driving electrode block 32 along the second direction X, and the areas of the driving electrode blocks 30 are equal.
In the embodiment of the invention, the driving electrode array is provided with at least two electrically insulated driving electrode blocks, the widths of the at least two driving electrode blocks in the second direction X are arranged in a differentiated manner, and the widths of the driving signal lines on one side close to the binding region are more and more dense, and the occupied space is more and more wide, so that the width of the space occupied by the electrode region formed by the driving electrode blocks on one side close to the binding region is more and more narrow, thereby realizing space complementation, and reasonably utilizing space arrangement, thereby reducing the wiring space of the driving signal lines, increasing the area of the driving electrode blocks, on one hand, ensuring the improvement of touch control precision, and not increasing obvious wiring regions; on the other hand, the arrangement of the driving electrode blocks is reasonably arranged by utilizing the wiring area, so that the wiring space is reduced, the area of the driving electrode blocks is increased, the touch blind area is reduced, and the touch sensitivity is improved.
It should be noted that, in the embodiment of the present application, the driving electrode blocks are set as square electrodes, and on the premise that the areas of the driving electrode blocks are equal, the width of the driving electrode block in the first direction Y is gradually increased in the direction that the display area points to the binding area, so that the configuration design of the shapes of the driving electrode blocks and the configuration of the driving signal lines are mutually complemented, and the maximum utilization of the space is realized.
Optionally, referring to fig. 3 to 8, a touch electrode group 5 is formed by one driving electrode row 3 and one sensing electrode row 4 which are adjacent to each other, and the touch electrode group 5 is arranged along the second direction X; therefore, the driving electrode rows and the sensing electrode rows are alternately arranged along the second direction, so that the uniform distribution of the touch electrodes is realized, and the uniformity of the touch performance is realized.
Further, referring to fig. 3 to 8, a plurality of sensing signal lines 401 are disposed on a side of the sensing electrode row 4 away from the driving electrode row 3 in the touch electrode group 5 where the sensing electrode row is located.
Optionally, referring to fig. 8 specifically, the driving signal line 301 is disposed on a side of the driving electrode column 3 away from the sensing electrode column 4 in the touch electrode group 5 where the driving electrode column is located; because no sensing signal line and no driving signal line are arranged between the driving electrode block and the sensing electrode block in the same touch electrode group, the signal intensity of touch mutual capacitance formed between the driving electrode block and the sensing electrode block in the same group is ensured, and the recognition sensitivity of touch is improved.
Optionally, referring to fig. 8, the plurality of sensing signal lines 401 form a wiring region 60, and the width of the wiring region 60 along the second direction X gradually increases along the first direction Y; meanwhile, the electrode regions formed by the sensing electrode blocks 40 correspondingly and electrically connected to the sensing signal lines 401 are gradually reduced in width along the second direction X along the first direction Y, and the wiring regions and the electrode region forming regions are complementary to each other, so as to finally form a shape approaching a rectangle, that is, the electrode regions and the corresponding wiring regions are approximately equal in width in the second direction X.
Meanwhile, the plurality of driving signal lines 301 form a wiring region whose width gradually increases along the second direction X along the first direction Y; meanwhile, the electrode regions formed by the plurality of driving electrode blocks 40 correspondingly and electrically connected with the plurality of driving signal lines 301 are gradually reduced in width along the second direction X along the first direction Y, the wiring regions and the electrode region forming regions are complementary, and finally, a shape approaching a rectangle is formed, that is, the electrode regions and the corresponding wiring regions are approximately equal in width in the second direction X.
In the above embodiment, the touch electrodes and the touch signal lines are reasonably arranged by region complementation, so that the wiring space of the touch signal lines can be reduced, the touch blind area can be reduced, the area or the number of the touch electrode blocks can be increased, and the touch precision or the touch sensitivity can be improved.
In an embodiment, please refer to fig. 9, fig. 9 is another schematic plane structure diagram of the display panel provided in the embodiment of the present invention, as shown in fig. 9, the bonding area BA includes a plurality of driving signal pins 35 and a plurality of sensing signal pins 45; the plurality of driving signal lines 301 and the plurality of driving signal pins 35 are electrically connected in a one-to-one correspondence; the plurality of sensing signal lines 401 and the plurality of sensing signal pins 45 are electrically connected in a one-to-one correspondence. In the display panel, a plurality of driving signal lines 301 and a plurality of sensing signal lines 401 extend from the display area AA to the non-display area VA and make binding signal terminals in the binding area BA. With reference to fig. 9, the display panel 100 further includes a circuit board 80, and the driving signal pins 35 and the binding signal pins 45 are bound to the circuit board 80 through conductive adhesives, so as to achieve the conduction between the display panel and the flexible circuit board.
Specifically, in an optional embodiment, the circuit board 80 is a Chip On Film (COF), each driving signal pin 35 and each binding signal pin 45 are directly bound On the COF, and meanwhile, the COF is provided with the touch driving Chip 90 and the auxiliary device module, so that the touch driving Chip 90 transmits signals to each signal pin through the COF Film and then transmits the signals to the display panel, and the narrow-frame display panel is realized by utilizing the bendability of the COF.
In another alternative embodiment, the Circuit board 80 includes a Chip On Film (COF) and a Flexible Printed Circuit (FPC), the touch driving Chip 90 is disposed On the COF, the auxiliary device module is disposed On the FPC, the driving signal pins 35 and the bonding signal pins 45 are bonded On the COF, and the COF realizes connection between the display panel and the FPC. The narrow frame of the display panel is realized through the bendable COF.
It is emphasized that the various embodiments described in this application can be implemented in any combination without mutual exclusion.
Based on the same inventive concept, an embodiment of the present invention further provides a display apparatus, fig. 10 is a schematic diagram of the display apparatus provided in the embodiment of the present invention, and as shown in fig. 10, a display apparatus 200 includes the display panel 100 provided in any embodiment of the present invention. The specific structure of the display panel 100 has been described in detail in the above embodiments, and is not described herein again. Of course, the display device shown in fig. 10 is only a schematic illustration, and the display device may be any electronic device with a touch function, such as a mobile phone, a tablet computer, a notebook computer, an electronic book, or a television.
The foregoing is a further detailed description of the invention in connection with specific preferred embodiments and it is not intended to limit the invention to the specific embodiments described. For those skilled in the art to which the invention pertains, numerous simple deductions or substitutions may be made without departing from the spirit of the invention, which shall be deemed to belong to the scope of the invention.
The foregoing is a further detailed description of the invention in connection with specific preferred embodiments and it is not intended to limit the invention to the specific embodiments described. For those skilled in the art to which the invention pertains, several simple deductions or substitutions can be made without departing from the spirit of the invention, and all shall be considered as belonging to the protection scope of the invention.
Claims (13)
1. A display panel, comprising: the display device comprises a display area and a non-display area surrounding the display area, wherein the non-display area comprises a binding area arranged on one side of the display area, and the direction of the display area pointing to the binding area is a first direction;
the display region includes a plurality of driving electrode columns and a plurality of sensing electrode columns arranged along a second direction, the sensing electrode columns include a plurality of mutually insulated sensing electrode blocks arranged along the first direction, wherein the second direction crosses the first direction;
the display panel also comprises a plurality of driving signal lines and a plurality of sensing signal lines which extend along the first direction, and one sensing electrode block is correspondingly and electrically connected with one sensing signal line;
a plurality of sense electrode piece is including being close to the first sense electrode piece in binding the district and keeping away from the second sense electrode piece in binding the district, first sense electrode piece is followed size in the second direction is less than the second sense electrode piece is followed size in the second direction, and each the area of sense electrode piece equals.
2. The display panel according to claim 1, wherein the sensing electrode block is a square block electrode.
3. The display panel according to claim 2, wherein the widths of the plurality of sensing electrode blocks in the second direction gradually decrease along the first direction.
4. The display panel according to claim 3, wherein the plurality of sensing electrode blocks have a gradually increasing width in the first direction along the first direction.
5. The display panel according to claim 1, wherein one driving electrode column and one sensing electrode column adjacent to each other constitute a touch electrode group, and the touch electrode groups are arranged along the second direction; wherein the content of the first and second substances,
the driving electrode column and the sensing electrode column are disposed at the same layer.
6. The display panel according to claim 5,
the sensing electrode block comprises a first sub sensing electrode block and a second sub sensing electrode block which are electrically connected, the first sub sensing electrode block and the second sub sensing electrode block are arranged along the second direction, and the second sub sensing electrode block is arranged on one side, away from the driving electrode column in the touch electrode group, of the first sub sensing electrode block;
the first sub-sensing electrode blocks are the same in shape and equal in area.
7. The display panel according to claim 6, wherein each of the second sub sensing electrode blocks has a square shape;
along the first direction, the widths of at least two second sub sensing electrode blocks in the second direction are decreased progressively.
8. The display panel according to claim 5, wherein at least one of the sensing electrode blocks has a trapezoidal shape, two parallel edges of the trapezoidal shape extending in the first direction;
along the first direction, the width of the sensing electrode block in the second direction is decreased progressively;
the side lengths of the opposite sides of the drive electrode columns in the touch electrode groups where the sensing electrode blocks are located are equal.
9. The display panel according to claim 1, wherein the driving electrode column includes at least two electrically insulated driving electrode blocks arranged along the first direction, one of the driving electrode blocks being electrically connected to one of the driving signal lines;
in the second direction, one driving electrode block is opposite to at least one sensing electrode block;
and along the first direction, the driving electrode block comprises a first driving electrode block close to the binding region and a second driving electrode block far away from the binding region;
the size of the first driving electrode block along the second direction is smaller than that of the second driving electrode block along the second direction, and the areas of the driving electrode blocks are equal.
10. The display panel according to claim 1, wherein one driving electrode column and one sensing electrode column adjacent to each other constitute a touch electrode group, and the touch electrode groups are arranged along the second direction;
the sensing signal lines are arranged on one side, away from the driving electrode column in the touch electrode group, of the sensing electrode column.
11. The display panel according to claim 10, wherein a plurality of the sensing signal lines form a wiring region, and a width of the wiring region in the second direction gradually increases in the first direction.
12. The display panel according to claim 10, wherein the bonding region comprises a plurality of driving signal pins and a plurality of sensing signal pins;
the plurality of driving signal wires are electrically connected with the plurality of driving signal pins in a one-to-one correspondence manner;
the sensing signal lines and the sensing signal pins are electrically connected in a one-to-one correspondence mode.
13. A display device, characterized in that it comprises a display panel according to any one of the preceding claims 1-12.
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| CN113050838B (en) * | 2021-04-26 | 2023-11-28 | 武汉天马微电子有限公司 | Touch display panel and touch display device |
| CN113672119B (en) * | 2021-08-05 | 2024-03-26 | Tcl华星光电技术有限公司 | Display device |
| CN113721790B (en) * | 2021-09-03 | 2023-06-27 | 武汉华星光电半导体显示技术有限公司 | Touch display panel and display device |
| WO2024012426A1 (en) * | 2022-07-11 | 2024-01-18 | 广州视源电子科技股份有限公司 | Touch-control panel and touch-control display apparatus |
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