CN111755489B - Display panel - Google Patents

Display panel Download PDF

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Publication number
CN111755489B
CN111755489B CN202010572635.4A CN202010572635A CN111755489B CN 111755489 B CN111755489 B CN 111755489B CN 202010572635 A CN202010572635 A CN 202010572635A CN 111755489 B CN111755489 B CN 111755489B
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light emitting
touch
emitting area
layer
area
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CN111755489A (en
Inventor
张启沛
杨佳瑶
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Wuhan China Star Optoelectronics Semiconductor Display Technology Co Ltd
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Wuhan China Star Optoelectronics Semiconductor Display Technology Co Ltd
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    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
    • H10K59/10—OLED displays
    • H10K59/12—Active-matrix OLED [AMOLED] displays
    • H10K59/131—Interconnections, e.g. wiring lines or terminals
    • 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
    • G06F30/00—Computer-aided design [CAD]
    • G06F30/30—Circuit design
    • G06F30/39—Circuit design at the physical level
    • G06F30/394—Routing

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  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • General Physics & Mathematics (AREA)
  • Evolutionary Computation (AREA)
  • Geometry (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Human Computer Interaction (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)
  • Electroluminescent Light Sources (AREA)

Abstract

The invention provides a display panel which comprises a substrate, a display layer and a touch layer. The touch wires are arranged around each pixel display area, and the projection of the touch wires on the display layer is overlapped with the GOA signal lines, so that the touch wires are prevented from being overlapped with the pixel display areas, and the light transmittance of the display panel is improved.

Description

Display panel
Technical Field
The invention relates to the technical field of touch display, in particular to a display panel.
Background
With the increasing intelligence of electronic products, the requirements on the OLED display panel are also higher, especially the under-screen fingerprint identification technology provides higher opening requirements for the design of OLED pixels, and the Touch metal lines are directly arranged on the packaging layer of the panel by combining the technology of DOT (Direct on cell Touch) under development, so that the difficulty is greatly increased.
In order to avoid the loss of the display aperture ratio, the metal grid wiring of DOT needs to avoid the light-emitting opening area of the pixel, but the metal wiring of the display area is dense, the light transmittance is low, and the difficulty is caused in fingerprint identification under the light sensing screen.
Disclosure of Invention
The present invention is directed to a display panel, which is used to solve the problems of dense metal routing and low light transmittance in a display area.
The invention provides a display panel, comprising a substrate; the display layer is arranged on the substrate; the touch layer is arranged on the display layer; the display layer comprises a GOA signal line and a plurality of pixel light emitting areas arranged on the GOA signal line in an array manner; the touch layer comprises touch wires, the touch wires surround at least one pixel light emitting area, and the projection of the touch wires on the display layer is overlapped with the GOA signal lines.
Furthermore, the touch routing forms at least one gap, and the gap is located between two adjacent pixel light emitting areas.
Furthermore, the plurality of pixel light-emitting areas comprise a blue light-emitting area, a green light-emitting area and a red light-emitting area, and the blue light-emitting area, the green light-emitting area and the red light-emitting area form a plurality of pixel units.
Furthermore, the touch trace surrounds at least one blue light emitting area, and the touch trace around the blue light emitting area has at least two notches.
Furthermore, each pixel unit comprises two green light emitting areas, a red light emitting area and a blue light emitting area; the pixel units are arranged in a matrix of 2*2, the red light-emitting region and the blue light-emitting region are disposed at one diagonal of the matrix, and the two green light-emitting regions are disposed at the other diagonal of the matrix.
Further, each pixel light emitting area is surrounded by the touch wire.
Further, the substrate comprises a sensing area and a non-sensing area, wherein the non-sensing area surrounds the sensing area; the wiring density of the touch-control wires in the sensing area is less than or equal to that of the touch-control wires in the non-sensing area.
Further, at least a part of the touch-control wiring surrounds the light-emitting areas of the plurality of pixels.
Further, the method also comprises the following steps: the shadow eliminating layer is arranged on the touch control layer.
Further, the image elimination layer is a polarizer.
The invention has the beneficial effects that: the invention provides a display panel, wherein touch wires are arranged around each pixel display area, and the projection of the touch wires on the display layer is overlapped with GOA signal lines, so that the touch wires are prevented from being overlapped with the pixel display areas, and the light transmittance of the display panel is improved.
Drawings
The invention is further described below with reference to the figures and examples.
Fig. 1 is a schematic layer structure diagram of a display panel according to embodiment 1 of the present invention;
fig. 2 is a schematic plan wiring diagram of a display panel provided in embodiment 1 of the present invention;
fig. 3 is a schematic structural diagram of a substrate and a display layer provided in embodiment 1 of the present invention;
fig. 4 is a schematic structural diagram of a touch layer provided in embodiment 1 of the present invention;
fig. 5 is a schematic plan view of a display panel provided in embodiment 2 of the present invention;
fig. 6 is a schematic plan view of a display panel provided in embodiment 2 of the present invention;
fig. 7 is a schematic plan view of a display panel provided in embodiment 3 of the present invention;
fig. 8 is a schematic plan view of a display panel provided in embodiment 3 of the present invention;
fig. 9 is a schematic structural diagram of a display panel provided in embodiment 4 of the present invention;
a display panel 100;
a substrate 101; a display layer 102; a touch layer 103;
a touch trace 105; a GOA signal line 104; a pixel light emitting region 106;
a blue emissive area 1063; a green emissive area 1062; a red light emitting zone 1061;
a gate trace 1041; a data line 1042; a first insulating layer 301;
a second insulating layer 302; a third insulating layer 303; a plasma sheath 304;
a first metal layer 305; a second metal layer 306; a transmitting electrode 1051;
a receiving electrode 1052;
Detailed Description
In order that the present invention may be better understood, the following examples are included to further illustrate the invention, but not to limit its scope.
The following description of the embodiments refers to the accompanying drawings for illustrating the specific embodiments in which the invention may be practiced. The directional terms used in the present invention, such as "up", "down", "front", "back", "left", "right", "top", "bottom", etc., refer to the directions of the attached drawings. Accordingly, the directional terms used are used for explanation and understanding of the present invention, and are not used for limiting the present invention.
As shown in fig. 1, an embodiment 1 of the invention provides a display panel 100, which includes a substrate 101, a display layer 102, and a touch layer 103.
The substrate 101 is made of polyimide, and is used for preparing and forming the flexible substrate.
The display layer 102 is disposed on the substrate 101.
The touch layer 103 is disposed on the display layer 102.
As shown in fig. 2, the display layer 102 includes a GOA signal line 104 and a plurality of pixel light emitting areas 106 arranged in an array on the GOA signal line 104. In addition, the GOA (Gate Driver On Array) refers to the row driving technology of the Array substrate.
The touch layer 103 includes a touch trace 105, the touch trace 105 surrounds at least one pixel light emitting area 106, and a projection of the touch trace 105 on the display layer 102 overlaps with the GOA signal line 104. That is to say, the touch trace 105 is projected on the GOA signal line 104 of the display layer 102.
In embodiment 1, the wiring density of the touch trace 105 surrounds each pixel light emitting area 106. In other words, in embodiment 1, each pixel light emitting area 106 is surrounded by the touch trace 105.
The plurality of pixel light emitting areas 106 include a blue light emitting area 1063, a green light emitting area 1062, and a red light emitting area 1061. In embodiment 1, the light emitting areas 1061, 1062, and 1063 are all surrounded by the touch trace 105.
The blue light-emitting area 1063, the green light-emitting area 1062, and the red light-emitting area 1061 constitute a plurality of pixel units.
In embodiment 1, each pixel unit includes two green light emitting areas 1062, one red light emitting area 1061, and one blue light emitting area 1063.
Each pixel unit is arranged in a 2*2 matrix, that is, one red light emitting area 1061, one blue light emitting area 1063, and two green light emitting areas 1062 of each pixel unit are arranged in a 2*2 matrix, the red light emitting area 1061 and the blue light emitting area 1063 are provided at one diagonal of the matrix, and the two green light emitting areas 1062 are provided at the other diagonal of the matrix.
The area of the blue light emitting area 1063 is larger than that of the red light emitting area 1061, and the area of the red light emitting area 1061 is larger than that of the green light emitting area 1062. When wiring is required to be performed in the same pixel unit, two horizontal touch traces 105 have a dislocation, but the touch traces 105 are still disposed above the GOA signal lines 104.
In other embodiments, a pixel unit may also be composed of 1 red light emitting area 1061, 1 green light emitting area 1062, and 1 blue light emitting area 1063.
In embodiment 1, the GOA signal lines 104 include laterally disposed gate traces 1041 and longitudinally disposed data lines 1042.
As shown in fig. 3, the display layer 102 includes: a buffer layer 202, a dielectric layer 203, and an anode layer 204.
The buffer layer 202 is disposed on the substrate 101. The dielectric layer 203 is disposed on the buffer layer 202, and the anode layer 204 is disposed on the dielectric layer 203.
The dielectric layer 203 is provided with a plurality of thin film transistors 210. The thin film transistor 210 includes: a semiconductor layer 211, a first gate electrode 212, a second gate electrode 213, and a source drain layer 214.
The dielectric layer 203 includes: a first gate insulating layer 2031, a second gate insulating layer 2032, an interlayer insulating layer 2033, and a planarization layer 2034.
The semiconductor layer 211 is disposed on a side of the buffer layer 202 away from the substrate 101; the material of the semiconductor layer 211 is polysilicon or monocrystalline silicon.
The first gate insulating layer 2031 is disposed on the buffer layer 202 and the semiconductor layer 211; the first gate insulating layer 2031 mainly functions to insulate between adjacent metal layers.
The first gate electrode 212 is disposed on a side of the first gate insulating layer 2031 away from the buffer layer 202; the second gate insulating layer 2032 is disposed on the first gate electrode 212 and the first gate insulating layer 2031; the second gate 213 is disposed on a side of the second gate insulating layer 2032 away from the first gate insulating layer 2031.
The interlayer insulating layer 2033 is disposed on the second gate insulating layer 2032 and the second gate electrode 213; the source/drain layer 214 is disposed on a side of the interlayer insulating layer 2033 away from the second gate insulating layer 2032.
The planarization layer 2034 is disposed on the source/drain layer 214 and the interlayer insulating layer 2033.
The anode layer 204 is disposed on a side of the dielectric layer 203 away from the buffer layer 202 and connected to the dielectric layer 203.
The pixel defining layer 105 is disposed on the anode layer 204 and the dielectric layer 203, wherein the pixel defining layer 205 has an opening 206, and the anode layer 204 is exposed in the opening 206.
The gate wire 1041 is disposed in the first gate 212 or the second gate 213, and the data line 1042 is disposed in the source drain layer 214 or the anode layer 204.
As shown in fig. 4, the touch layer 103 includes: a first insulating layer 301, a second insulating layer 302, a third insulating layer 303, and a plasma layer 304.
The second insulating layer 302 is provided over the first insulating layer 301; the third insulating layer 303 is disposed on the second insulating layer 302, and the plasma layer 304 is disposed on the third insulating layer 303.
The third insulating layer 303 includes a first metal layer 305 and a second metal layer 306, and the second metal layer 306 is disposed on the first metal layer 305.
The touch trace 105 includes a transmitting electrode 1051 and a receiving electrode 1052, which are insulated from each other, the transmitting electrode 1051 and the receiving electrode 1052 are disposed in the second metal layer 306, and the transmitting electrode 1051 is connected to the receiving electrode 1052 through the first metal layer 305.
Embodiment 1 provides a display panel 100, wherein a touch trace 105 is disposed around each pixel light emitting area 106, and a projection of the touch trace 105 on the display layer 102 overlaps with the GOA signal line 104, so that the touch trace 105 is prevented from overlapping with a pixel display area, and light transmittance of the display panel 100 is improved.
As shown in fig. 5, an embodiment 2 of the present invention further provides a display panel 100a, which is different from the embodiment 1 in that at least one notch 107a is formed in the touch trace 105a, and the notch 107a is located between two adjacent pixel light emitting areas 105 a. This can reduce the light-shielding area of the touch trace 105a, and improve light transmission.
According to the characteristic of the lowest blue light brightness, in embodiment 2, the notch 107a is better to be disposed around the blue light emitting area 1063a, and the touch trace 105a surrounds at least one blue light emitting area 1063a, that is, the touch trace 105a around the blue light emitting area 1063a has at least two notches 107a. The touch trace 105a of the pixel unit has at least two notches 107a.
Specifically, in a pixel unit, the blue light emitting area 1063a and the right green light emitting area 1062a have a gap 107a, the blue light emitting area 1063a and the lower green light emitting area 1062a have another gap 107a, and a gap 107a is also formed around the red light emitting area 1061 a. Example 2 does not define the specific location of the notch.
As shown in fig. 6, the notch 107a may be further enlarged to further improve light transmission.
As shown in fig. 7, an embodiment 3 of the present invention further provides a display panel 100b, which is different from the embodiment 1 in that the substrate includes a sensing region 110b and a non-sensing region 120b, and the non-sensing region 120b surrounds the sensing region 110b.
In addition, in embodiment 3, at least a portion of the touch trace 105b may be surrounded on the periphery of the plurality of pixel light emitting areas, so as to reduce the wiring density of the touch trace 105 b. That is to say, each light emitting area of the pixels in embodiment 1 is surrounded by the touch traces. In embodiment 3, the wiring density of the touch trace 105b is adjusted by adjusting the number of the pixel light emitting areas 106b surrounded by the touch trace 105 b.
In embodiment 3 of the present invention, the wiring density of the touch trace 105b in the sensing area 110b is less than or equal to the wiring density of the touch trace 105 in the non-sensing area 120b, that is, in embodiment 3, the wiring density can be reduced by surrounding the touch trace 105b around a plurality of pixel light emitting areas 106b. The sensing area 110b is a fingerprint identification area.
Fig. 7 shows a case that the wiring density of the touch traces 105b in the sensing area 110b and the non-sensing area 120b is the same. Both regions may be wired according to the same rule.
Specifically, in the sensing region 110b and the non-sensing region 120b, the wiring manner is as follows: a part of the touch trace 105b surrounds the four pixel light emitting areas 106b, a part of the touch trace 105b surrounds one pixel light emitting area 106b, and a part of the touch trace 105b surrounds two pixel light emitting areas 106b.
Specifically, a part of the touch trace 105b surrounds three green emitting areas 1062b and one blue emitting area 1063b; a part of the touch trace 105b surrounds a red light emitting area 1061b; a portion of the touch trace 105b surrounds a green light emitting area 1062b and a blue light emitting area 1063b.
Further, when three green light emitting areas 1062b and one blue light emitting area 1063b are combined into a group and surrounded by the touch trace 105b, the blue light emitting area 1063b is located at the middle position, and the periphery thereof is not surrounded by the touch trace 105b, so that the brightness difference between the metal reflection and the pixel luminescence can be reduced. By reducing the density of the touch traces 105b in the sensing area, the light blocking effect of the metal in the sensing area 110b is reduced.
Fig. 8 shows a case that the wiring density of the touch traces 105b in the sensing area 110b and the non-sensing area 120b is different, for example, each pixel light emitting area 106b shown in fig. 8 is surrounded by the touch traces 105b, so that the wiring density of the touch traces 105b in the sensing area 110b is less than the wiring density of the touch traces 105b in the non-sensing area 120b, thereby reducing the light blocking effect of the metal in the sensing area 110b and improving the touch accuracy of the non-sensing area 120 b.
As shown in fig. 9, embodiment 4 of the present invention further provides a display panel 100c, which is a further limitation to embodiments 1 to 3.
In embodiment 4, to avoid visible reflection at different positions due to different metal densities, the shadow eliminating layer 104c may be added on the touch layer 103c to eliminate visible reflection of metal, so as to further reduce light blocking of metal and improve the display performance of the panel.
It should be noted that many variations and modifications of the embodiments of the present invention fully described are possible and are not to be considered as limited to the specific examples of the above embodiments. The above examples are intended to be illustrative of the invention and are not intended to be limiting thereof. In general, the scope of the present invention should include those alternatives or modifications as would be apparent to one of ordinary skill in the art.

Claims (7)

1. A display panel, comprising:
a substrate;
the display layer is arranged on the substrate;
the touch layer is arranged on the display layer;
the display layer comprises a GOA signal line and a plurality of pixel light emitting areas arranged on the GOA signal line in an array manner;
the touch layer comprises touch wires, the touch wires surround at least one pixel light emitting area, and the projection of the touch wires on the display layer is overlapped with the GOA signal lines;
the plurality of pixel light emitting areas comprise a blue light emitting area, a green light emitting area and a red light emitting area, and the blue light emitting area, the green light emitting area and the red light emitting area form a plurality of pixel units;
in the same pixel unit, two transverse touch control wires have a dislocation;
the touch control wiring forms at least one notch, and the notch is positioned between the light emitting areas of the two adjacent pixels;
the touch wire surrounds at least one blue light emitting area, and the touch wire around the blue light emitting area is provided with at least two notches;
each pixel unit comprises two green light emitting areas, a red light emitting area and a blue light emitting area, the blue light emitting area and the green light emitting area are provided with a notch, the blue light emitting area and the other green light emitting area are provided with another notch, and a notch is arranged on the periphery of the red light emitting area.
2. The display panel according to claim 1,
the pixel units are arranged in a matrix of 2*2, the red light-emitting region and the blue light-emitting region are disposed at one diagonal of the matrix, and the two green light-emitting regions are disposed at the other diagonal of the matrix.
3. The display panel according to claim 1,
each pixel light emitting area is surrounded by the touch wire.
4. The display panel according to claim 1,
the substrate comprises a sensing area and a non-sensing area, wherein the non-sensing area surrounds the sensing area;
the wiring density of the touch-control wires in the sensing area is less than or equal to that of the touch-control wires in the non-sensing area.
5. The display panel according to claim 4,
at least one part of touch control wires surround the periphery of the light emitting areas of the pixels.
6. The display panel according to claim 1, characterized by further comprising:
the shadow eliminating layer is arranged on the touch control layer.
7. The display panel according to claim 6,
the image eliminating layer is a polaroid.
CN202010572635.4A 2020-06-22 2020-06-22 Display panel Active CN111755489B (en)

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CN111755489B true CN111755489B (en) 2022-10-04

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CN113268176A (en) * 2021-05-20 2021-08-17 武汉华星光电技术有限公司 Self-contained touch display panel and display device

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