CN113849079A - Display panel and display device - Google Patents

Display panel and display device Download PDF

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Publication number
CN113849079A
CN113849079A CN202111094195.7A CN202111094195A CN113849079A CN 113849079 A CN113849079 A CN 113849079A CN 202111094195 A CN202111094195 A CN 202111094195A CN 113849079 A CN113849079 A CN 113849079A
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China
Prior art keywords
touch
trace
display panel
display
display area
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Granted
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CN202111094195.7A
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CN113849079B (en
Inventor
邓义超
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Kunshan Govisionox Optoelectronics Co Ltd
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Kunshan Govisionox Optoelectronics Co Ltd
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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
    • 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
    • G06F3/0446—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means using a grid-like structure of electrodes in at least two directions, e.g. using row and column electrodes

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Human Computer Interaction (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)
  • Position Input By Displaying (AREA)

Abstract

The invention discloses a display panel and a display device, wherein the display panel is provided with a first display area and a second display area which is at least partially arranged around the first display area, and the display panel comprises: a substrate; the touch structure is arranged on one side of the substrate and comprises a plurality of touch electrode blocks formed by touch wires, and at least part of the touch wires positioned in the first display area are provided with wire openings. Each touch electrode block is of a grid structure formed by touch wires, and at least part of the touch wires located in the first display area are provided with wire openings.

Description

Display panel and display device
Technical Field
The invention belongs to the technical field of electronic products, and particularly relates to a display panel and a display device.
Background
On electronic devices such as cellular phones and tablet computers, it is necessary to integrate optical elements such as a front camera, an infrared light sensor, and the like on the side where the display panel is provided. Because optical element is higher to display panel's rete luminousness requirement, receive structural constraint, current touch-control rete can reduce display panel's luminousness, influences optical element's normal work.
Therefore, a new display panel and a new display device are needed.
Disclosure of Invention
The embodiment of the invention provides a display panel and a display device, wherein the light transmission area of a touch structure can be increased by arranging a wiring opening, so that the light transmittance of the display panel in a first display area is improved, and the normal work of an optical element arranged in the first display area is ensured.
An embodiment of the present invention provides a display panel having a first display area and a second display area at least partially surrounding the first display area, the display panel including: a substrate; the touch structure is arranged on one side of the substrate and comprises a plurality of touch electrode blocks formed by touch wires, and at least part of the touch wires positioned in the first display area are provided with wire openings.
According to one aspect of the invention, the display device further comprises a non-display area, the non-display area is at least partially arranged around the second display area, a control chip is arranged in the non-display area, each touch electrode block is electrically connected with the control chip, and the touch wires of the touch electrode blocks in the first display area and the second display area are provided with wire openings.
According to an aspect of the invention, in a direction perpendicular to the plane of the substrate, an area ratio of the trace opening of each touch electrode block on the touch trace gradually increases from one end of the touch structure close to the control chip to one end of the touch structure far away from the control chip.
According to an aspect of the present invention, the length of the trace opening of the touch electrode block located at the end of the touch structure away from the control chip is greater than the length of the trace opening of the touch electrode block located at the end of the touch structure close to the control chip; and/or the width of the wiring opening of the touch electrode block at one end of the touch structure far away from the control chip is larger than the width of the wiring opening of the touch electrode block at one end of the touch structure close to the control chip.
According to an aspect of the present invention, the width of the touch trace is greater than or equal to 0.1 μm and less than or equal to 40 μm, and the width of the trace opening is greater than or equal to 0.05 μm and less than or equal to 35 μm.
According to an aspect of the invention, an orthographic projection of the trace opening on the substrate is at least one of a polygon, a circle and a sector.
According to one aspect of the invention, the distances between the routing openings are equal.
According to an aspect of the invention, the length of the trace opening is greater than or equal to 0.1 μm and less than or equal to 100 μm.
According to an aspect of the invention, the touch screen further includes a display device layer, the display device layer is disposed between the substrate and the touch structure, the display device layer includes a plurality of light emitting units, and an orthographic projection of the touch trace on the substrate and an orthographic projection of the light emitting units on the substrate do not overlap.
Another aspect of an embodiment of the present invention provides a display device, including: a display panel according to any one of the above embodiments; and the optical element is arranged corresponding to the first display area of the display panel.
Compared with the prior art, the display panel provided by the embodiment of the invention comprises the substrate and the touch structure, wherein the touch structure comprises a plurality of touch electrode blocks formed by touch wires, specifically, each touch electrode block forms a grid structure by the touch wires, at least part of the touch wires positioned in the first display area are provided with wire openings, because the touch wires are usually made of opaque metal materials, the touch wires can block light entering the first display area, the light transmission area of the touch structure can be increased by arranging the wire openings, the light transmittance of the display panel in the first display area is further improved, and the normal work of optical elements arranged in the first display area is ensured.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments of the present invention will be briefly described below, and it is obvious that the drawings described below are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a display panel according to an embodiment of the present invention;
fig. 2 is a diagram illustrating a structure of a film layer of a first display area according to an embodiment of the disclosure;
fig. 3 is a schematic structural diagram of a touch electrode block according to an embodiment of the present invention;
FIG. 4 is an enlarged view of a portion of FIG. 1 at A;
FIG. 5 is an enlarged view of a portion of FIG. 1 at B;
FIG. 6 is an enlarged view of a portion of FIG. 1 at C;
FIG. 7 is another enlarged partial view taken at B in FIG. 1;
FIG. 8 is another enlarged partial view at C of FIG. 1;
fig. 9 is a schematic structural diagram of a touch trace according to an embodiment of the present invention;
fig. 10 is a schematic structural diagram of another touch trace according to an embodiment of the invention.
In the drawings:
1-a substrate; 2-a touch structure; 21-touch routing; 3-display device layer; 31-a light emitting unit; 4-a control chip; 5-an optical element; 6-cover plate; k-routing opening; AA 1-first display area; AA 2-second display area; NA-non-display area.
Detailed Description
Features and exemplary embodiments of various aspects of the present invention will be described in detail below, and in order to make objects, technical solutions and advantages of the present invention more apparent, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not to be construed as limiting the invention. It will be apparent to one skilled in the art that the present invention may be practiced without some of these specific details. The following description of the embodiments is merely intended to provide a better understanding of the present invention by illustrating examples of the present invention.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
It will be understood that when a layer, region or layer is referred to as being "on" or "over" another layer, region or layer in describing the structure of the component, it can be directly on the other layer, region or layer or intervening layers or regions may also be present. Also, if the component is turned over, one layer or region may be "under" or "beneath" another layer or region.
It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the invention. Thus, it is intended that the present invention cover the modifications and variations of this invention provided they come within the scope of the appended claims and their equivalents. It should be noted that the embodiments provided in the embodiments of the present invention can be combined with each other without contradiction.
On electronic devices such as cellular phones and tablet computers, it is necessary to integrate optical elements such as a front camera, an infrared light sensor, a proximity light sensor, and the like on the side where the display panel is provided. In some embodiments, a transparent display area may be disposed on the electronic device, and the optical element is disposed on a back surface of the transparent display area, so as to implement full-screen display of the electronic device under the condition that the optical element is ensured to work normally.
However, the current structure of the touch film is limited, and the touch film reduces the transmittance of the display panel, which affects the normal operation of the optical device.
In order to solve the above problems, embodiments of the present invention provide a display panel and a display device, and embodiments of the display panel and the display device will be described below with reference to fig. 1 to 10.
The display panel provided by the embodiment of the invention can be an Organic Light-Emitting Diode (OLED) display panel, a liquid crystal panel or a Micro flat display panel (Micro-OLED or Micro-LED), and the like.
Referring to fig. 1 to 3, an embodiment of the invention provides a display panel having a first display area AA1 and a second display area AA2 at least partially surrounding the first display area AA1, the display panel including: a substrate 1; the touch structure 2 is disposed on one side of the substrate 1, the touch structure 2 includes a plurality of touch electrode blocks formed by the touch traces 21, and at least a portion of the touch traces 21 located in the first display area AA1 has a trace opening K.
The display panel provided by the embodiment of the invention comprises a substrate 1 and a touch structure 2, wherein the touch structure 2 comprises a plurality of touch electrode blocks formed by touch wires 21, specifically, each touch electrode block is formed into a grid structure by the touch wires 21, and at least part of the touch wires 21 located in the first display area AA1 are provided with wire openings K, because the touch wires 21 are usually made of opaque metal materials, the touch wires 21 can block light entering the first display area AA1, the light transmission area of the touch structure 2 can be increased by setting the wire openings K, so that the light transmission rate of the display panel in the first display area AA1 is improved, and the normal operation of the optical element 5 arranged in the first display area AA1 is ensured.
The touch trace 21 is typically made of an opaque metal with low resistivity, such as copper, aluminum, etc.
The first display area AA1 is a light-transmitting area for disposing optical elements 5 such as a camera, and the light transmittance of the first display area AA1 can be greater than that of the second display area AA2 by disposing the trace opening K on the touch trace 21, so that the corresponding optical element 5 receives a sufficient amount of incident light, and an imaging or fingerprint recognition effect of the corresponding optical element 5 is ensured.
It should be noted that, the number of the trace openings K disposed in the first display area AA1 is not particularly limited, and the greater the number of the trace openings K, the higher the transmittance of the corresponding area, for example, when the number of the trace openings K in the first display area AA1 is 1, 2, 3 · · · · · · · n, the transmittance Tr of the corresponding area is Tr1、Tr2、Tr3······TrnAnd Tr0＜Tr1＜Tr2＜Tr3······＜Trn. Therefore, the transmittance of the first display area AA1 can be adjusted by the number of the trace openings K of the touch structure 2.
Among them, the substrate 1 may be a hard substrate, such as a glass substrate; the flexible substrate can also be made of polyimide, polystyrene, polyethylene terephthalate, parylene, polyethersulfone or polyethylene naphthalate. The substrate 1 is mainly used to support devices disposed thereon.
In order to transmit the touch signal to the touch structure 2, in some optional embodiments, the display panel further includes a non-display area NA, the non-display area NA is at least partially disposed around the second display area AA2, the control chip 4 is disposed on the non-display area NA, each touch electrode block is electrically connected to the control chip 4, and the touch traces 21 of the touch electrode blocks in the first display area AA1 and the second display area AA2 both have trace openings K.
It should be noted that the control chip 4 may respectively send a touch signal to each touch electrode block through the trace and receive a feedback signal of each touch electrode block, and determine the touch position according to a difference between the two signals, and the touch traces 21 of the touch electrode blocks in the first display area AA1 and the second display area AA2 both have the trace opening K, so as to improve the light transmittance of the display area of the entire display panel and improve the display effect of the display panel.
In the related art, the impedance R of the touch electrode block on the side far from the control chip 4 is often greater than the impedance R of the touch electrode block on the side near the control chip 4, and the capacitances of the touch electrode blocks are substantially the same, so that the charging time RC of the touch electrode block on the side far from the control chip 4 of the display panel is greater than the charging time RC of the touch electrode block on the side near the control chip 4, so that the touch uniformity of the display panel is degraded.
It should be noted that, the larger the area ratio of the trace opening K of each touch electrode block on the touch trace 21 is, the smaller the touch capacitance C generated by the touch trace 21 is, and the difference between the charging time RC of the touch electrode block at the near end of the control chip 4 and the charging time RC of the touch electrode block at the far end of the control chip 4 can be balanced by adjusting the area ratio of the trace opening K of each touch electrode block on the touch trace 21 from the end of the touch structure 2 close to the control chip 4 to the end of the touch structure 2 away from the control chip 4, i.e. the charging time of the touch electrode blocks at the far end and near end is basically consistent, so as to improve the touch uniformity of the display panel.
Referring to fig. 4 to 8, in order to realize that the trace openings K have different area ratios on the touch traces 21, in some optional embodiments, the length of the trace openings K of the touch electrode blocks located at one end of the touch structure 2 away from the control chip 4 is greater than the length of the trace openings K of the touch electrode blocks located at one end of the touch structure 2 close to the control chip 4; and/or the width of the trace opening K of the touch electrode block located at the end of the touch structure 2 away from the control chip 4 is greater than the width of the trace opening K of the touch electrode block located at the end of the touch structure 2 close to the control chip 4.
It can be understood that the area of the trace opening K can be changed by adjusting the size parameters such as the length and the width of the trace opening K, and then the touch area corresponding to the touch capacitance generated by the touch trace 21 is adjusted, so as to change the capacitance from the touch electrode block at the near end of the control chip 4 to the touch electrode block at the far end of the control chip 4, and balance the difference between the charging times RC of the touch electrode block at the near end of the control chip 4 and the touch electrode block at the far end of the control chip 4, i.e. the charging times of the touch electrode blocks at the far end and the near end are basically consistent, and the touch uniformity of the display panel is improved.
Specifically, the charging time RC is R × k × S/d; wherein, R is the impedance of the touch electrode block, k is the dielectric constant of the medium between the conductors, S is the facing area of the two conductors, and d is the distance between the two conductors.
K and D are constants, and S is inversely proportional to the length L or the width D of the trace opening K, that is, the larger the area occupied by the trace opening K in the touch trace 21 is, the smaller S is, and further, the smaller the touch capacitance C is, and the impedances from the touch electrode block located at the end of the touch structure 2 close to the control chip 4 to the touch electrode block located at the end of the touch structure 2 far from the control chip 4 are R1 and R2 … … Rn; wherein R1 is not less than R2. cndot. Rn. As shown in FIG. 7 and FIG. 8, the lengths of the trace openings K from the touch electrode block near one end of the control chip 4 to the touch electrode block far from the end of the control chip 4 can be respectively L567, L2. cndot. Ln, where L1 is equal to or less than L2. cndot. Ln, or as shown in FIG. 4, FIG. 5 and FIG. 6, the widths of the trace openings K from the touch electrode block near one end of the control chip 4 to the touch electrode block far from the end of the control chip 4 are respectively D1, D2. cndot. Dn, D1 is equal to or more than D2. cndot. to make the lengths and/widths of the trace openings K be respectively C4835. cndot. to make the capacitance of the contact electrode blocks from the touch electrode block near the end of the control chip 4 to the control chip 4 be respectively C4835, C387, C3, C, and further realize that R1 XC 1 is approximately equal to R2 XC 2. cncnx Rn, so that the charging time RC of the touch electrode block at the near end of the control chip 4 is basically consistent with the charging time RC of the touch electrode block at the far end of the control chip 4, and the touch uniformity of the display panel is improved.
In order to ensure normal transmission of the touch signal, in some optional embodiments, the width of the touch trace 21 is greater than or equal to 0.1 μm and less than or equal to 40 μm, and the width of the trace opening K is greater than or equal to 0.05 μm and less than or equal to 35 μm.
It can be understood that the width of the touch trace 21 should not be too small, and too small is likely to cause problems such as fracture, and the processing is difficult, and since the trace opening K is disposed on the touch trace 21, the width dimension of the trace opening K needs to be smaller than the width dimension of the touch trace 21.
Referring to fig. 9 and 10, in some alternative embodiments, an orthogonal projection of the trace opening K on the substrate 1 is at least one of a polygon, a circle, and a sector. For convenience of forming, the trace opening K may be a rectangular pattern which is easily formed on the touch trace 21, and the trace opening K may be formed by etching, for example, the touch trace 21 is etched by using a corresponding etchant, and a portion of the touch trace 21 is etched to form the trace opening K. Optionally, the length of the trace opening K is greater than or equal to 0.1 μm and less than or equal to 100 μm, and the length of the trace opening K is limited to avoid that the trace opening K has a large influence on the structural strength of the touch trace 21.
In order to ensure the uniformity of the light transmission of the display panel, in some alternative embodiments, the distances between the trace openings K are equal. It can be understood that, the distances between the trace openings K are equal, that is, the trace openings K are uniformly distributed on the touch trace 21, so that the touch trace 21 at each position is uniformly transparent through the trace openings K, thereby ensuring the display effect.
In some optional embodiments, the display device layer 3 is further included, the display device layer 3 is disposed between the substrate 1 and the touch structure 2, the display device layer 3 includes a plurality of light emitting units 31, and an orthogonal projection of the touch trace 21 on the substrate 1 and an orthogonal projection of the light emitting units 31 on the substrate 1 do not overlap. The orthographic projection of the touch wire 21 on the substrate 1 and the orthographic projection of the light-emitting unit 31 on the substrate 1 are not overlapped, so that the shielding of the touch wire 21 on the light emitted by each light-emitting unit 31 is reduced as much as possible. Optionally, a cover plate 6 is disposed on a side of the touch structure 2 away from the display device layer 3 to protect the display panel.
An embodiment of the present invention further provides a display device, including: a display panel, which is the display panel in any one of the above embodiments; the optical element 5 is disposed corresponding to the first display area AA1 of the display panel. The optical element 5 specifically includes a camera and an infrared light sensor. Therefore, the display device provided in the embodiments of the present invention has the technical effects of the technical solutions of the display panels in any of the embodiments, and the explanations of the structures and terms that are the same as or corresponding to the embodiments are not repeated herein. The display device provided by the embodiment of the invention can be a mobile phone and can also be any electronic product with a display function, including but not limited to the following categories: the touch screen display system comprises a television, a notebook computer, a desktop display, a tablet computer, a digital camera, an intelligent bracelet, intelligent glasses, a vehicle-mounted display, medical equipment, industrial control equipment, a touch interaction terminal and the like, and the embodiment of the invention is not particularly limited in this respect.
As will be apparent to those skilled in the art, for convenience and brevity of description, the specific working processes of the systems, modules and units described above may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again. It should be understood that the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive various equivalent modifications or substitutions within the technical scope of the present invention, and these modifications or substitutions should be covered within the scope of the present invention.
It should also be noted that the exemplary embodiments mentioned in this patent describe some methods or systems based on a series of steps or devices. However, the present invention is not limited to the order of the above-described steps, that is, the steps may be performed in the order mentioned in the embodiments, may be performed in an order different from the order in the embodiments, or may be performed simultaneously.

Claims (10)

1. A display panel having a first display region and a second display region disposed at least partially around the first display region, the display panel comprising:
a substrate;
the touch structure is arranged on one side of the substrate and comprises a plurality of touch electrode blocks formed by touch wires, and at least part of the touch wires positioned in the first display area are provided with wire openings.
2. The display panel according to claim 1, further comprising a non-display area, wherein the non-display area is at least partially disposed around the second display area, a control chip is disposed in the non-display area, each of the touch electrode blocks is electrically connected to the control chip, and the touch traces of the touch electrode blocks in the first display area and the second display area have trace openings.
3. The display panel according to claim 2, wherein in a direction perpendicular to the plane of the substrate, an area ratio of the trace openings of the touch electrode blocks on the touch traces gradually increases from one end of the touch structure close to the control chip to one end of the touch structure away from the control chip.
4. The display panel according to claim 3, wherein the length of the trace opening of the touch electrode block at the end of the touch structure away from the control chip is greater than the length of the trace opening of the touch electrode block at the end of the touch structure close to the control chip; and/or the presence of a gas in the gas,
the width of the wiring opening of the touch electrode block, which is positioned at one end of the touch structure far away from the control chip, is greater than the width of the wiring opening of the touch electrode block, which is positioned at one end of the touch structure close to the control chip.
5. The display panel according to claim 4, wherein the width of the touch trace is greater than or equal to 0.1 μm and less than or equal to 40 μm, and the width of the trace opening is greater than or equal to 0.05 μm and less than or equal to 35 μm.
6. The display panel of claim 1, wherein an orthographic projection of the trace opening on the substrate is at least one of a polygon, a circle, and a fan.
7. The display panel of claim 1, wherein the distance between the trace openings is equal.
8. The display panel according to claim 1, wherein the length of the trace opening is greater than or equal to 0.1 μm and less than or equal to 100 μm.
9. The display panel of claim 1, further comprising a display device layer disposed between the substrate and the touch structure, wherein the display device layer includes a plurality of light emitting units, and an orthogonal projection of the touch trace on the substrate and an orthogonal projection of the light emitting units on the substrate do not overlap.
10. A display device, comprising:
a display panel according to any one of claims 1 to 9;
and the optical element is arranged corresponding to the first display area of the display panel.
CN202111094195.7A 2021-09-17 2021-09-17 Display panel and display device Active CN113849079B (en)

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Application Number Priority Date Filing Date Title
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CN113849079B CN113849079B (en) 2023-08-04

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109144330A (en) * 2018-10-31 2019-01-04 武汉华星光电半导体显示技术有限公司 Touch-control display panel and display device
CN110888565A (en) * 2019-12-20 2020-03-17 京东方科技集团股份有限公司 Touch display panel and display device
CN111752417A (en) * 2020-06-29 2020-10-09 武汉天马微电子有限公司 Display panel and display device
CN111984153A (en) * 2020-08-31 2020-11-24 武汉天马微电子有限公司 Display panel and display device
CN113391728A (en) * 2021-06-23 2021-09-14 京东方科技集团股份有限公司 Touch display module, manufacturing method thereof and display device

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109144330A (en) * 2018-10-31 2019-01-04 武汉华星光电半导体显示技术有限公司 Touch-control display panel and display device
CN110888565A (en) * 2019-12-20 2020-03-17 京东方科技集团股份有限公司 Touch display panel and display device
CN111752417A (en) * 2020-06-29 2020-10-09 武汉天马微电子有限公司 Display panel and display device
CN111984153A (en) * 2020-08-31 2020-11-24 武汉天马微电子有限公司 Display panel and display device
CN113391728A (en) * 2021-06-23 2021-09-14 京东方科技集团股份有限公司 Touch display module, manufacturing method thereof and display device

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