CN112490277B - display panel - Google Patents

display panel Download PDF

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Publication number
CN112490277B
CN112490277B CN202011538393.3A CN202011538393A CN112490277B CN 112490277 B CN112490277 B CN 112490277B CN 202011538393 A CN202011538393 A CN 202011538393A CN 112490277 B CN112490277 B CN 112490277B
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China
Prior art keywords
pixels
display panel
sub
light transmission
connection line
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Active
Application number
CN202011538393.3A
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Chinese (zh)
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CN112490277A (en
Inventor
胡凯
苏博宇
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Wuhan China Star Optoelectronics Semiconductor Display Technology Co Ltd
Original Assignee
Wuhan China Star Optoelectronics Semiconductor Display Technology Co Ltd
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Priority to CN202011538393.3A priority Critical patent/CN112490277B/en
Publication of CN112490277A publication Critical patent/CN112490277A/en
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Classifications

    • 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
    • H10K59/122—Pixel-defining structures or layers, e.g. banks
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/22—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources
    • G09G3/30—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels
    • G09G3/32—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
    • G09G3/3208—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED]
    • G09G3/3225—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED] using an active matrix
    • 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
    • H10K59/121—Active-matrix OLED [AMOLED] displays characterised by the geometry or disposition of pixel elements
    • H10K59/1213—Active-matrix OLED [AMOLED] displays characterised by the geometry or disposition of pixel elements the pixel elements being TFTs
    • 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
    • H10K59/123—Connection of the pixel electrodes to the thin film transistors [TFT]
    • 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
    • H10K59/1315—Interconnections, e.g. wiring lines or terminals comprising structures specially adapted for lowering the resistance
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2320/00—Control of display operating conditions
    • G09G2320/02—Improving the quality of display appearance
    • G09G2320/0233—Improving the luminance or brightness uniformity across the screen

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  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Geometry (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)

Abstract

The present invention provides a display panel, comprising: the display device comprises a light transmission area, a display area, a reset signal line, a first connecting line and a second connecting line; the invention reduces the impedance between pixels by connecting in parallel between the sub-pixels of adjacent rows, and the voltage across the panel is closer, which can reduce the voltage drop across the panel. The first connecting lines of the light transmission area are disconnected, the partial row sub-pixels of the first connecting lines are indirectly connected through the second connecting lines, the first connecting lines corresponding to the light transmission area are further indirectly connected, the row sub-pixels corresponding to the light transmission area are connected in parallel, the voltage of the whole reset signal in the light transmission area is kept consistent, the brightness of a display nearby the light transmission area can be uniform, and the taste of a panel is improved.

Description

Display panel
Technical Field
The invention relates to the field of flexible display, in particular to a display panel.
Background
An Active-matrix organic light emitting diode (AMOLED) has advantages of wide viewing angle, ultra-high contrast ratio, low power consumption, rapid response, etc. due to its relatively complex circuit architecture, but has insufficient microscopic uniformity due to factors such as process and equipment. Particularly, thin Film Transistor (TFT) characteristics of PMOS (n-type substrate, p-channel, MOS transistor for carrying current by flow of holes) devices are uneven, which may cause uneven display brightness (mura) and color cast of AMOLED in low-light conditions.
For some high-end display panels, consumers tend to have narrow frames and full screen designs, and the current high-end mobile phones all adopt a structure (camera under panel) that a camera is arranged below the panel, as shown in fig. 1, which results in difficulty in designing a dense structure near the image pick-up hole 11, wherein reset lines 12 near the image pick-up hole 11 are generally connected with each row of sub-pixels, and each row of sub-pixels are disconnected near the image pick-up hole 11 by oval lines near the image pick-up hole 11, the upper and lower sub-pixels are not connected in parallel, the reset capability of the reset lines 12 near the image pick-up hole 11 is higher than that of a display area, wherein the reset voltage of an anode wiring is lower, the anode of an AMOLED is lightened slowly under the display of the panel with low gray scale, and the lighting time of the condition that the brightness of the display is uneven near the image pick-up hole 11 is shortened when the screen is displayed, so that the low gray scale taste is poor.
Therefore, it is highly desirable to provide a new display panel for improving the signal resetting capability of the transparent area.
Disclosure of Invention
The invention aims to provide a display panel, which is characterized in that the impedance between pixels is reduced by connecting the subpixels of two adjacent rows in parallel, and the voltage on the panel is more approximate, so that the voltage drop on the panel is reduced, and the signal resetting capability of a light transmission area is improved.
In order to achieve the above object, the present invention provides a display panel comprising: a light transmission region; the display area comprises a plurality of sub-pixels, and the sub-pixels are distributed in the display area in a matrix manner and surround the light transmission area; the reset signal lines are arranged on two sides of the display area and are respectively connected with each row of sub-pixels; the subpixels of each row are connected with each other, and the subpixels of two adjacent rows are connected in parallel.
Further, the display panel further includes: a first connection line connecting the sub-pixels of each row; and a second connection line connecting the sub-pixels of the adjacent two rows.
Further, the first connection line is vertically connected to the second connection line.
Further, the second connection line includes a line shape, a wave shape, or an oval shape; the linearity includes a straight line shape or a broken line shape.
Further, the first connection line and the second connection line are formed in the first metal layer.
Further, the first connection line is formed in the first metal layer; the second connecting wire is formed in the second metal layer; the second connecting wire is connected with the first connecting wire through a through hole.
Further, a part of the first connection line corresponding to the light-transmitting region is disconnected; and part of the row sub-pixels with the part of the first connecting lines disconnected are indirectly connected through the second connecting lines.
Further, the second connection line includes: the left connecting line is arranged at the left side of the light transmission area; and the right connecting line is arranged on the right side of the light transmission area.
Further, the left connecting wire is directly connected with the right connecting wire; or the left connecting wire and the right connecting wire are indirectly connected through the first connecting wire.
Further, the first metal layer includes: a gate layer and a source/drain electrode layer; the second metal layer includes: a gate layer and a source/drain electrode layer; wherein the first metal layer is different from the second metal layer.
The beneficial effects of the invention are as follows: the present invention provides a display panel in which the impedance between pixels is reduced by connecting the subpixels in two adjacent rows in parallel, and the voltage across the panel is more similar, which can reduce the voltage drop across the panel. The first connecting lines of the light transmission area are disconnected, the partial row sub-pixels of the first connecting lines are indirectly connected through the second connecting lines, the first connecting lines corresponding to the light transmission area are further indirectly connected, the row sub-pixels corresponding to the light transmission area are connected in parallel, the voltage of the whole reset signal in the light transmission area is kept consistent, the brightness of a display nearby the light transmission area can be uniform, and the taste of a panel is improved.
Drawings
The invention is further described below with reference to the drawings and examples.
FIG. 1 is a schematic plan view of a display panel according to the prior art;
fig. 2 is a schematic plan view of a display panel according to embodiment 1 of the present invention;
fig. 3 is a schematic plan view of a display panel according to embodiment 2 of the present invention;
fig. 4 is a schematic structural diagram of a display panel according to embodiment 2 of the present invention; the method comprises the steps of carrying out a first treatment on the surface of the
Fig. 5 is a schematic plan view of a display panel according to embodiment 3 of the present invention;
description of main reference numerals:
a display panel 100;
a light-transmitting region 120; a display area 110; a reset signal line 200;
a first connection line 112; a second connection line 121; left connecting line 1211;
a right connecting line 1212; through holes 122a,122b; a subpixel 111.
Detailed Description
The following description of the embodiments refers to the accompanying drawings, which illustrate specific embodiments in which the invention may be practiced. The directional terms, such as up, down, front, back, left, right, inner, outer, side, etc., are merely referring to the directions of the drawings. The names of the elements, such as first, second, etc., mentioned in the present invention are merely distinguishing different elements, and may be better expressed. In the drawings, like structural elements are denoted by like reference numerals.
Embodiments of the present invention will be described in detail herein with reference to the accompanying drawings. This invention may take many different forms and should not be construed as limited to the particular embodiments set forth herein. These embodiments are provided so that this disclosure will be thorough and complete, and will fully enable others skilled in the art to understand the various embodiments of the invention and with various modifications as are suited to the particular use contemplated.
In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
As shown in fig. 2, embodiment 1 of the present invention provides a display panel 100, including: the light transmitting region 120, the display region 110, the reset signal line 200, the first connection line 112, and the second connection line 121.
The light-transmitting region 120 is used for transmitting more light; an optical sensor is disposed below the light-transmitting region 120, and is configured to receive light from the outside.
The display area 110 includes a plurality of sub-pixels 111, and the sub-pixels 111 are distributed in the display area 110 in a matrix and surround the light-transmitting area 120.
The reset signal lines 200 are disposed on two sides of the display area 110, and the reset signal lines 200 are respectively connected to each row of sub-pixels 111.
The sub-pixels 111 in each row are connected with each other, and the sub-pixels 111 in two adjacent rows are connected in parallel.
The first connection line 112 connects the sub-pixels 111 of each row; the second connection lines 121 connect the sub-pixels 111 of the adjacent two rows.
A portion of the first connection line 112 corresponding to the light-transmitting region 120 is disconnected. The partial row of sub-pixels 111 at the break of the partial first connection lines 112 are indirectly connected by the second connection lines 121.
The present invention, by connecting in parallel between the subpixels 111 of two adjacent rows, reduces the impedance between the pixels, and the voltage across the panel is closer, which may reduce the voltage drop across the panel.
The first connection lines 112 at the light-transmitting area 120 are disconnected, and the partial row sub-pixels 111 disconnected by the first connection lines 112 are indirectly connected through the second connection lines 121, so that the first connection lines 112 corresponding to the light-transmitting area 120 are indirectly connected, the row sub-pixels 111 corresponding to the light-transmitting area 120 are connected in parallel, and the voltage of the whole reset signal in the light-transmitting area 120 is kept consistent, so that the brightness of a display near the light-transmitting area 120 is uniform, and the taste of a panel is improved.
The shape of the second connection line 121 includes a line shape, particularly a zigzag shape, or a waveform, particularly a square wave or a sine wave. This can increase the equivalent resistance of the second connection lines 121, and can reduce the overall resistance of the panel when connected in parallel, reducing the impedance.
In preparing the structure of the present invention, the first connection line 112 and the second connection line 121 are formed in a first metal layer.
Specifically, the first connection line 112 and the second connection line 121 are formed by depositing a metal layer and patterning. Wherein patterning is typically by lithographic form. The material of the metal layer includes copper and its alloy.
The second connection line 121 includes: left connecting line 1211 and right connecting line 1212.
The left connecting line 1211 is disposed on the left side of the light-transmitting region 120; the right connecting line 1212 is disposed on the right side of the light-transmitting region 120. The left connection line 1211 and the right connection line 1212 are indirectly connected through the first connection line 112.
The first metal layer includes: a gate layer and a source-drain electrode layer. The first metal layer in embodiment 1 is a gate layer.
As shown in fig. 3 and 4, embodiment 2 of the present invention provides a display panel 100a, which is different from embodiment 1 in that the first connection line 112a is formed in the first metal layer 202 a; the second connection line 121a is formed in the second metal layer 204 a.
The second connection line 121a is connected to the first connection line 112a through hole 122a, that is, the second connection line 121a is not directly connected to the first connection line 112a, and is connected to each other through the through hole 122 a.
Alternatively, the first connection line 112a is swapped into the second metal layer 204 a.
The first connection line 112a is vertically connected to the second connection line 121a, and alternatively, a projection of the second connection line 121a on the first metal layer 202a is perpendicular to the first connection line 112a.
The second connection line 121a is linear in shape.
The first metal layer 202a includes: a gate layer and a source/drain electrode layer; the second metal layer 204a includes: a gate layer and a source-drain electrode layer. The first metal layer is different from the second metal layer.
In embodiment 2, the first metal layer 202a is a gate layer, and the second metal layer 204a is a source-drain electrode layer.
Specifically, in preparing the structure of example 2, the following steps are specifically included:
a substrate 201a is provided.
The deposited first metal layer 202a is patterned to form the first connection line 112a.
A buffer layer 203a is deposited on the substrate 201a and covers the first connection line 112a.
A hole is perforated at the junction of the first connection line 112a and the second connection line 121 a.
The deposited second metal layer 204a is patterned to form a second connection line 121a, and the second connection line 121a is connected to the first connection line 112a through the via 122 a.
As shown in fig. 5, embodiment 3 of the present invention provides a display panel 100b, which is different from embodiment 2 in that the second connection line 121b is elliptical.
The left connecting line 1211b and the right connecting line 1212b form an entire ellipse, and the second connecting line 121b of the ellipse surrounds the light-transmitting region 120b. The left connection line 1211b is directly connected to the right connection line 1212 b.
The connection manner of the second connection line 121b and the first connection line 112b in embodiment 3 may also be through the via 122b, that is, the second connection line 121b and the first connection line 112b may also be disposed in different layers.
In addition, the left connection line 1211b and the right connection line 1212b in embodiment 3 may also be directly connected, which increases the stability of the circuit structure.
The number of the left connecting wire 1211b and the right connecting wire 1212b is at least two in embodiment 3, which is used to increase the stability of the circuit structure, and when one of them is disconnected, the other one can also function as a connection.
It should be noted that numerous variations and modifications are possible in light of the fully described invention, and are not limited to the specific examples of implementation described above. The above-described embodiments are merely illustrative of the present invention and are not intended to be limiting. In general, the scope of the present invention should include those variations or alternatives and modifications apparent to those skilled in the art.

Claims (7)

1. A display panel, comprising:
a light transmission region;
the display area comprises a plurality of sub-pixels, and the sub-pixels are distributed in the display area in a matrix manner and surround the light transmission area; and
reset signal lines which are arranged on two sides of the display area and are respectively connected with each row of sub-pixels;
the second connecting wire is connected with the sub-pixels of two adjacent rows;
the sub-pixels of each row are connected with each other, and the sub-pixels of two adjacent rows corresponding to the light transmission area and at least one row of sub-pixels adjacent to the light transmission area along the direction perpendicular to the row are connected in parallel through the second connecting line;
the number of the second connecting lines is at least two, and the at least two second connecting lines are all arranged to surround the light-transmitting area;
the second connecting wire includes:
the left connecting line is arranged at the left side of the light transmission area; and
the right connecting wire is arranged on the right side of the light transmission area, and the left connecting wire is directly connected with the right connecting wire and surrounds the light transmission area in an oval shape.
2. The display panel of claim 1, further comprising:
and a first connection line connecting the sub-pixels of each row.
3. The display panel of claim 2, wherein the display panel comprises,
the first connecting wire is vertically connected with the second connecting wire.
4. The display panel of claim 2, wherein the display panel comprises,
the first connection line and the second connection line are formed in the first metal layer.
5. The display panel of claim 2, wherein the display panel comprises,
the first connecting line is formed in the first metal layer;
the second connecting wire is formed in the second metal layer;
the second connecting wire is connected with the first connecting wire through a through hole.
6. The display panel of claim 2, wherein the display panel comprises,
a part of the first connecting line corresponding to the light-transmitting area is disconnected;
and part of the row of sub-pixels positioned at the disconnection position of the part of the first connecting lines are indirectly connected through the second connecting lines.
7. The display panel of claim 5, wherein the first metal layer comprises: a gate layer and a source/drain electrode layer;
the second metal layer includes: a gate layer and a source/drain electrode layer;
wherein the first metal layer is different from the second metal layer.
CN202011538393.3A 2020-12-23 2020-12-23 display panel Active CN112490277B (en)

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Publication number Priority date Publication date Assignee Title
CN113539175B (en) 2021-07-23 2022-10-04 武汉华星光电半导体显示技术有限公司 Display panel and display device
CN115294878A (en) * 2022-09-06 2022-11-04 武汉天马微电子有限公司上海分公司 Display panel and display device

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CN112614875A (en) * 2020-12-15 2021-04-06 昆山国显光电有限公司 Display panel and display device

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