CN116486690A - Display module and display device - Google Patents

Display module and display device Download PDF

Info

Publication number
CN116486690A
CN116486690A CN202310530645.5A CN202310530645A CN116486690A CN 116486690 A CN116486690 A CN 116486690A CN 202310530645 A CN202310530645 A CN 202310530645A CN 116486690 A CN116486690 A CN 116486690A
Authority
CN
China
Prior art keywords
display
display panel
display module
module assembly
layer
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202310530645.5A
Other languages
Chinese (zh)
Inventor
杨春辉
金驰名
杨康
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 Tianma Microelectronics Co Ltd
Original Assignee
Wuhan Tianma Microelectronics Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Wuhan Tianma Microelectronics Co Ltd filed Critical Wuhan Tianma Microelectronics Co Ltd
Priority to CN202310530645.5A priority Critical patent/CN116486690A/en
Publication of CN116486690A publication Critical patent/CN116486690A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/13338—Input devices, e.g. touch panels
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/133528—Polarisers
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
    • G09F9/30—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements
    • G09F9/33—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements being semiconductor devices, e.g. diodes
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L27/00—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate
    • H01L27/15—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components having potential barriers, specially adapted for light emission
    • H01L27/153—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components having potential barriers, specially adapted for light emission in a repetitive configuration, e.g. LED bars
    • H01L27/156—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components having potential barriers, specially adapted for light emission in a repetitive configuration, e.g. LED bars two-dimensional arrays
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L33/00—Semiconductor devices having potential barriers specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
    • H01L33/48—Semiconductor devices having potential barriers specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof characterised by the semiconductor body packages
    • H01L33/58—Optical field-shaping elements
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L33/00—Semiconductor devices having potential barriers specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
    • H01L33/48—Semiconductor devices having potential barriers specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof characterised by the semiconductor body packages
    • H01L33/62—Arrangements for conducting electric current to or from the semiconductor body, e.g. lead-frames, wire-bonds or solder balls
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05F—STATIC ELECTRICITY; NATURALLY-OCCURRING ELECTRICITY
    • H05F3/00—Carrying-off electrostatic charges
    • H05F3/02—Carrying-off electrostatic charges by means of earthing connections
    • 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
    • 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
    • H10K59/50—OLEDs integrated with light modulating elements, e.g. with electrochromic elements, photochromic elements or liquid crystal elements
    • 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
    • H10K59/80—Constructional details
    • H10K59/8793—Arrangements for polarized light emission
    • 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
    • H10K59/80—Constructional details
    • H10K59/88—Dummy elements, i.e. elements having non-functional features
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F2202/00—Materials and properties
    • G02F2202/22—Antistatic materials or arrangements

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Nonlinear Science (AREA)
  • Power Engineering (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Chemical & Material Sciences (AREA)
  • Optics & Photonics (AREA)
  • Mathematical Physics (AREA)
  • Computer Hardware Design (AREA)
  • Theoretical Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)

Abstract

The embodiment of the invention provides a display module and a display device, relates to the technical field of display, and is used for improving the electrostatic reliability of the display module. The display module includes: a display panel including a display region and a non-display region; the polaroid is positioned on the light emitting side of the display panel and comprises a conductive layer; the orthographic projection of the polaroid on the plane of the display panel is at least partially positioned in the display area; the orthographic projection of the grounding pad on the plane of the display panel is positioned in the non-display area; the front projection of the static liquid on the plane of the display panel is positioned in the non-display area; the static liquid is electrically connected with the conductive layer and the grounding pad.

Description

Display module and display device
[ field of technology ]
The present invention relates to the field of display technologies, and in particular, to a display module and a display device.
[ background Art ]
With the continuous development of science and technology, more and more display devices are widely applied to daily life and work of people, and become an indispensable important tool for people today. Moreover, with the continuous development of display technology, the display effect requirements of consumers on the display are also continuously improved.
At present, static electricity is easily generated at the edge position of the display panel in the production, test and use processes of the display panel, and the static electricity is accumulated to a certain extent, so that the edge of the display panel is abnormally lightened due to the static electricity discharge phenomenon. Further, if static electricity is conducted into the display panel, damage is caused to electronic devices in the display panel.
[ invention ]
In view of the above, the embodiment of the invention provides a display module and a display device, which are used for timely guiding static electricity at the edge of the display module, avoiding the static electricity from entering a display area, improving the static electricity reliability of the display module and improving the display effect of the display module.
In one aspect, an embodiment of the present invention provides a display module, including:
a display panel including a display region and a non-display region;
the polaroid is positioned on the light emitting side of the display panel and comprises a conductive layer; the orthographic projection of the polaroid on the plane of the display panel is at least partially positioned in the display area;
the orthographic projection of the grounding pad on the plane of the display panel is positioned in the non-display area;
the front projection of the static liquid on the plane of the display panel is positioned in the non-display area; the static liquid is electrically connected with the conductive layer and the grounding pad.
Optionally, the polarizer includes a first end, and along a direction parallel to a plane where the display panel is located, the first end is located on a side of the polarizer away from the display area, and the conductive layer is exposed at the first end, where the static liquid contacts with the first end.
Optionally, the static liquid is in contact with a ground pad.
Optionally, the static liquid at least partially overlaps the ground pad in a direction perpendicular to a plane in which the display panel is located.
Optionally, the orthographic projection of the static liquid on the plane of the display panel covers the grounding pad.
Optionally, the display panel includes a substrate, and an array film layer and a touch film layer stacked on the same side of the substrate; the array film layer is positioned between the substrate and the touch control film layer;
the touch control film layer comprises a first touch control conductive layer, and the distance between the first touch control conductive layer and the substrate is larger than or equal to the distance between other conductive layers in the touch control film layer and the substrate;
the grounding pad comprises a first pad metal layer, and the first pad metal layer and the first touch conductive layer are arranged on the same layer.
Optionally, the touch film layer further includes a first touch insulating layer, the first touch insulating layer is located at a side of the first touch conductive layer away from the substrate, the first touch insulating layer includes a through hole, and along a direction perpendicular to a plane where the display panel is located, the through hole overlaps the ground pad.
Optionally, the electrostatic liquid at least partially fills the through hole.
Optionally, the polarizer includes a first end, and along a direction parallel to a plane where the display panel is located, the first end is located at a side of the polarizer away from the display area, the conductive layer is exposed at the first end, and the first end is located in the through hole.
Optionally, the polarizer includes a first end, along a direction parallel to a plane where the display panel is located, the first end is located on a side of the polarizer away from the display area, the conductive layer is exposed at the first end, and along a direction perpendicular to the plane where the display panel is located, the first end is staggered from the through hole.
On the other hand, the embodiment of the invention provides a display device, which comprises the display module.
According to the display module and the display device provided by the embodiment of the invention, the polaroid positioned on the light emitting side of the display panel is arranged in the display module, and is arranged to comprise the conductive layer, namely, the polaroid has a dimming function and also has a conductive function. Based on the setting mode provided by the embodiment of the invention, static charges generated by the display module in the static test process and the process of using the display device by consumers can be conducted to static liquid through the polaroid and then to the grounding pad through the static liquid, so that the static conduction efficiency in the display module can be improved, static charges are prevented from moving into a display area, the influence of static charges on the display of the display module is avoided, the problem of static breakdown caused by static charges accumulated to a certain degree is avoided, and the display stability and reliability of the display module are improved.
[ description of the drawings ]
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and that other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic top view of a display module according to an embodiment of the invention;
FIG. 2 is a schematic cross-sectional view along BB' of FIG. 1;
FIG. 3 is another cross-sectional schematic view along BB' of FIG. 1;
FIG. 4 is a further schematic cross-sectional view along BB' of FIG. 1;
FIG. 5 is a schematic cross-sectional view of a display area of a display panel according to an embodiment of the present invention;
FIG. 6 is a further schematic cross-sectional view along BB' of FIG. 1;
fig. 7 is a schematic cross-sectional view of another display module according to an embodiment of the invention;
fig. 8 is a schematic top view of another display module according to an embodiment of the invention;
fig. 9 is a schematic top view of a display device according to an embodiment of the invention.
[ detailed description ] of the invention
For a better understanding of the technical solution of the present invention, the following embodiments of the present invention will be described with reference to the accompanying drawings as DD223354I
Detailed Description
It should be understood that the described embodiments are merely some, but not all, embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The terminology used in the embodiments of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used in this application and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.
It should be understood that the term "and/or" as used herein is merely one relationship describing the association of the associated objects, meaning that there may be three relationships, e.g., a and/or B, may represent: a exists alone, A and B exist together, and B exists alone. In addition, the character "/" herein generally indicates that the front and rear associated objects are an "or" relationship.
It should be understood that although the terms first, second, etc. may be used to describe the pad metal layers in embodiments of the present invention, these pad metal layers should not be limited to these terms. These terms are only used to distinguish the pad metal layers from each other. For example, the first pad metal layer may also be referred to as a second pad metal layer, and similarly, the second pad metal layer may also be referred to as a first pad metal layer, without departing from the scope of embodiments of the present invention.
In the process of realizing the embodiment of the invention, the inventor researches and discovers that the problem of abnormal display of local brightening can often occur in the edge area of the display module in the process of verifying the reliability of the display module by adopting a copper bar friction experiment. The copper bar friction experiment is used for verifying the stability of display equipment such as a mobile phone in the long-time screen scratching use process. The specific test method is that on the basis of normal lighting of the mobile phone screen, scribing equipment such as copper bars and the like is used for scribing on the surface of the mobile phone screen at a certain speed. The inventor researches and discovers that when a scribing device such as a copper bar is adopted to rub a mobile phone cover plate, electrostatic charges are generated on the cover plate, the electrostatic charges can induce a device used for driving sub-pixels to light in a display panel, the device characteristics drift, and therefore the display panel can display abnormal locally.
In view of the above, an embodiment of the present invention provides a display module, as shown in fig. 1 and fig. 2, fig. 1 is a schematic top view of the display module provided in the embodiment of the present invention, and fig. 2 is a schematic cross-sectional view along BB' of fig. 1, where the display module includes a display panel 1. The display panel 1 includes a display area AA and a non-display area NA. The display area AA includes a plurality of sub-pixels (not shown). The display panel 1 may be a display panel using self-luminescence technology, that is, the sub-pixels may include any one of organic light emitting diodes (Organic Light Emitting Diode, abbreviated as OLED), quantum dot light emitting diodes (Quantum Dots Light Emitting Diode, abbreviated as QLED), and Micro light emitting diodes (Micro Light Emitting Diode, abbreviated as Micro-LED). Alternatively, the display panel 1 may be a liquid crystal display panel (Liquid Crystal Display, LCD). The non-display area NA includes wiring and/or driving circuits and the like.
As shown in fig. 1 and 2, the display module further includes a polarizer 2 located on the light emitting side of the display panel 1, and the polarizer 2 includes a conductive layer 20, i.e., the polarizer 2 is a low-resistance polarizer. In the embodiment of the invention, the polarizer 2 has not only a dimming function but also a conducting function. Illustratively, the conductive layer 20 includes any one of carbon nanotubes, transparent metal oxides, and nano-silver pastes.
As shown in fig. 1, the polarizer 2 includes a first portion 21 and a second portion 22, where the front projection of the first portion 21 on the plane of the display panel 1 is located in the display area AA, and the front projection of the second portion 22 on the plane of the display panel 1 is located in the non-display NA. Optionally, the first portion 21 and the second portion 22 are connected to each other. Illustratively, the first portion 21 and the second portion 22 may be integrally formed.
As shown in fig. 1 and fig. 2, the display module further includes a ground pad 31 and an electrostatic liquid 4, where orthographic projections of the ground pad 31 and the electrostatic liquid 4 on a plane where the display panel 1 is located are located in the non-display area NA. The electrostatic liquid 4 has conductivity. The electrostatic liquid 4 electrically connects the conductive layer 20 and the ground pad 31 in the polarizer 2. The static charge generated by the display module during the static test and the use process can be transmitted to the static liquid 4 through the conductive layer 20 in the polarizer 2, and then transmitted to the grounding pad 31 from the static liquid 4, so as to be conducted away in time.
The display module provided by the embodiment of the invention comprises the polaroid 2 positioned on the light emitting side of the display panel 1, wherein the polaroid 2 comprises the conductive layer 20, namely, the polaroid 2 has the conductive function besides the dimming function, in addition, the grounding pad 31 positioned in the non-display area NA and the electrostatic liquid 4 are arranged in the display module, the orthographic projection of the electrostatic liquid 4 on the plane of the display panel 1 is positioned in the non-display area NA, and the electrostatic liquid 4 is electrically connected with the conductive layer 20 and the grounding pad 31. Based on the arrangement mode provided by the embodiment of the invention, static charges can be conducted to the static liquid 4 through the polaroid 2 and then to the grounding pad 31 through the static liquid 4, so that the static electricity conduction efficiency in the display module can be improved, the static charges are prevented from moving into the display area AA, the static charges are prevented from influencing the display of the display module, the static charge is prevented from accumulating to a certain degree, the problem of static breakdown is avoided, and the display stability and the reliability of the display module are improved.
Illustratively, the electrostatic liquid 4 comprises a conductive polymeric material, optionally including PEDOT: PSS. In the embodiment of the present invention, the electrostatic liquid 4 may be formed in the non-display area NA by coating or printing, and then the electrostatic liquid 4 may be cured as needed.
Alternatively, in an embodiment of the present invention, the second portion 22 of the polarizer 2 and the electrostatic liquid 4 may be disposed corresponding to the ground pad 31.
For example, as shown in fig. 1, an embodiment of the present invention may provide at least one ground pad 31 in the non-display area NA. When a plurality of ground pads 31 are disposed in the non-display area NA, the electrostatic liquid 4 and the polarizer 2 are correspondingly disposed at the position of each ground pad 31.
Optionally, as shown in fig. 1, in the embodiment of the present invention, the electrostatic liquid 4 may at least partially surround the display area AA, and the second portion 22 of the polarizer 2 may at least partially surround the display area AA, so as to perform electrostatic protection on the display area AA from multiple directions, improve the display effect of the display panel 1, and improve the electrostatic reliability of the display module.
As shown in fig. 1 and 2, the polarizer 2 includes a first end D1, and the first end D1 is located at a side of the polarizer 2 away from the display area AA in a direction parallel to the plane of the display panel 1, i.e., the first end D1 corresponds to an edge of the polarizer 2. In other words, the first end D1 may be regarded as an edge of the second portion 22 remote from the first portion 21. In the embodiment of the present invention, the conductive layer 20 is exposed at the first end D1. As shown in fig. 1 and 2, the front projection of the first end D1 on the plane of the display panel 1 is located in the non-display area NA.
As shown in fig. 2, the electrostatic liquid 4 is in contact with the first end D1 of the polarizer 2, so that the electrostatic liquid 4 is electrically connected to the conductive layer 20 in the polarizer 2 to provide a dissipation path of the static electricity. When static electricity is generated in the display module, the static electricity can be transmitted to the static electricity liquid 4 in contact electrical connection with the conductive layer 20 through the conductive layer 20 in the polarizer 2, and is transmitted to the grounding pad 31 through the static electricity liquid 4, so that the static electricity is dissipated. According to the embodiment of the invention, the electrostatic liquid 4 is in contact electrical connection with the first end part D1 of the polaroid 2, so that the reliability of electrical connection between the electrostatic liquid and the first end part D1 can be improved, and the transmission resistance of static electricity between the electrostatic liquid and the first end part D1 is reduced. In addition, by adopting the arrangement mode, when the display module is manufactured, the electrostatic liquid 4 can be formed in a coating or printing mode according to the position of the first end part D1 of the polarizer 2, namely, a position reference can be provided for forming the electrostatic liquid 4, and the process yield is improved. Illustratively, as shown in fig. 2, the electrostatic liquid 4 is located at a side of the first end D1 of the polarizer 2 away from the display area AA.
In the embodiment of the present invention, as shown in fig. 2, the first end D1 includes a first surface S1 far from the display area AA, and in the embodiment of the present invention, as shown in fig. 2, a distance between the first surface S1 and the display area AA is unchanged along a direction far from the display panel, that is, the first surface S1 is perpendicular to a plane of the display panel. Alternatively, as shown in fig. 3, fig. 3 is another schematic cross-sectional view along BB' of fig. 1, and in a direction away from the display panel, the distance between the first surface S1 and the display area AA may be gradually reduced according to the embodiment of the present invention. Based on the arrangement mode, the electrostatic liquid 4 can be better coated on the first surface S1, the dead angle which is not contacted between the electrostatic liquid 4 and the first surface S1 is avoided, and the contact area between the electrostatic liquid 4 and the conductive layer 20 is increased.
In the embodiment of the present invention, as shown in fig. 2 and 3, the electrostatic liquid 4 is in contact with the ground pad 31, so that the electrostatic liquid 4 and the ground pad 31 are electrically connected to provide a dissipation path of static electricity. The embodiment of the invention can increase the reliability of the electric connection of the electrostatic liquid 4 and the grounding pad 31 by making the electrostatic liquid and the grounding pad 31 contact and electrically connected, and is beneficial to reducing the transmission resistance of static electricity between the electrostatic liquid and the grounding pad. As illustrated in fig. 2 and 3, the electrostatic liquid 4 is positioned on the side of the ground pad 31 facing the light emitting side of the display panel 1. And, in a direction perpendicular to the plane of the display panel 1, the electrostatic liquid 4 at least partially overlaps the ground pad 31, and the overlapping portions are electrically connected in correspondence with the contacts.
As shown in fig. 4, fig. 4 is a schematic cross-sectional view of fig. 1 along BB', and the embodiment of the present invention may also enable the orthographic projection of the electrostatic liquid 4 on the plane of the display panel 1 to cover the ground pad 31, so as to maximize the contact area between the electrostatic liquid 4 and the ground pad 31, reduce the contact resistance between the electrostatic liquid 4 and the ground pad 31, and improve the conduction efficiency of static electricity.
As shown in fig. 5, fig. 5 is a schematic cross-sectional view of a display area of a display panel according to an embodiment of the present invention, where the display panel 1 includes a substrate 10, and an array film 11, a display film 12, and a touch film 13 stacked on the same side of the substrate 10; the display film layer 12 is located at a side of the array film layer 11 away from the substrate 10, and the touch film layer 13 is located at a side of the display film layer 12 away from the array film layer 11. That is, the array film layer 11 is located between the substrate 10 and the touch film layer 13.
In the embodiment of the present invention, the touch film layer 13 includes a first touch conductive layer 131. The distance between the first touch conductive layer 131 and the substrate 10 is greater than or equal to the distance between the other conductive layers in the touch film layer 13 and the substrate 10. Fig. 5 illustrates that the touch film layer 13 includes a first touch conductive layer 131 and a second touch conductive layer 132, where the second touch conductive layer 132 is located on a side of the first touch conductive layer 131 near the substrate 10. Alternatively, when the display panel is designed as a mutual capacitive touch display panel, one of the first touch conductive layer 131 and the second touch conductive layer 132 includes the touch electrode block 14, the other includes the bridge 15, and the touch electrode block 14 includes the touch driving electrode and the touch sensing electrode. The bridge 15 is used for electrically connecting two adjacent touch driving electrodes or electrically connecting two adjacent touch sensing electrodes. Fig. 5 illustrates that the first touch conductive layer 131 includes the bridge 15, and the second touch conductive layer 132 includes the touch electrode block 14.
As shown in fig. 2, 3, 4 and 5, the ground pad 31 includes a first pad metal layer 311, and in the embodiment of the present invention, the first pad metal layer 311 and the first touch conductive layer 131 are disposed in the same layer. In this way, on the one hand, the same patterning process can be adopted to form the first pad metal layer 311 and the first touch conductive layer 131 simultaneously in the same process, which is beneficial to simplifying the manufacturing process of the display panel and realizing the thin design of the display panel. On the other hand, the distance between the first pad metal layer 311 and the polarizer 2 in the direction perpendicular to the plane of the display panel 1 can be made shorter, and when the electrostatic liquid 4 electrically connecting the first pad metal layer and the polarizer is provided, the thickness of the electrostatic liquid 4 can be reduced, which is beneficial to the preparation of the electrostatic liquid 4. In addition, DD223354I can also be shortened
The electrostatic conduction path facilitates more rapid conduction of the static electricity.
Alternatively, as shown in fig. 5, the display film layer 12 includes a pixel defining layer 120, a first electrode 121, a light emitting layer 123, and a second electrode 122; the pixel defining layer 120 includes an opening exposing at least a portion of the first electrode 121, and at least a portion of the light emitting layer 123 is located within the opening.
As illustrated in fig. 5, the array film layer 11 includes a buffer layer 111, a semiconductor layer 112, a first insulating layer 113, a first metal layer M1, a second insulating layer 114, a second metal layer M2, a third insulating layer 115, and a third metal layer M3, which are stacked.
As illustrated in fig. 6, fig. 6 is a schematic cross-sectional view of fig. 1 along BB', the ground pad 31 further includes a second pad metal layer 312, the second pad metal layer 312 is located on a side of the first pad metal layer 311 near the substrate 10, an insulating layer 310 is included between the second pad metal layer 312 and the first pad metal layer 311, the insulating layer 310 includes a via hole, and the second pad metal layer 312 and the first pad metal layer 311 are electrically connected through the via hole.
Optionally, as shown in fig. 5 and 6, the second pad metal layer 312 is disposed on the same layer as at least one of the first metal layer M1, the second metal layer M2, and the third metal layer M3.
Optionally, as shown in fig. 1, the display panel further includes a touch trace 16. For example, the touch trace is located on the first touch conductive layer 131 or the second touch conductive layer 132 shown in fig. 5, and the orthographic projection of the touch trace 16 on the plane of the display panel is at least partially located in the non-display area NA. The touch trace 16 electrically connects the touch electrode and the touch driving chip. As shown in fig. 1, the front projection of the touch trace 16 on the plane of the display panel is located at one side of the static liquid 4 near the display area AA. By this arrangement, static electricity generated from the edge of the display panel can be timely conducted away by the static electricity liquid 4, and the touch wiring 16 is protected from the static electricity.
As illustrated in fig. 5, the display panel 1 further includes an encapsulation layer 14, and the encapsulation layer 14 is located between the display film layer 12 and the touch film layer 13.
As illustrated in fig. 2, 3, 4, 5 and 6, the touch film layer 13 further includes a first touch insulation layer 171, and the first touch insulation layer 171 is located on a side of the first touch conductive layer 131 away from the substrate 10. As shown in fig. 2, 3, 4 and 6, the first touch insulating layer 171 includes a through hole H located in the non-display area NA, and overlapping the ground pad 31 in a direction perpendicular to the plane of the display panel 1. The via hole H may be formed by etching the first touch insulating layer 171, for example.
When the display panel is manufactured, after the preparation of the first pad metal layer 311 is completed, the first touch insulating layer 171 located above the first pad metal layer 311 may be etched to expose at least a portion of the first pad metal layer 311, and the first pad metal layer 311 may be grounded, and then the attachment process of the polarizer 2 may be performed. After the attachment of the polarizer 2 is completed, the coating of the electrostatic liquid 4 may be performed. Based on the arrangement mode provided by the embodiment of the invention, at least part of the electrostatic liquid 4 can be accommodated in the through hole H, when the electrostatic liquid 4 is prepared by adopting a coating process, the fluctuation of the coating process is facilitated, the position stability of the electrostatic liquid 4 is improved, the electrostatic liquid 4 is more stably accommodated in the through hole H, the electrostatic liquid 4 is prevented from flowing to other unnecessary positions, the stable electric connection between the electrostatic liquid 4 and the polaroid 2 and the first bonding pad metal layer 311 is ensured, and the precision requirement on the coating process is reduced.
Illustratively, the depth d of the via H satisfies 1 μm.ltoreq.d.ltoreq.5 μm, alternatively, the depth d of the via H may satisfy 2 μm.ltoreq.d.ltoreq.4 μm, and illustratively, the depth d of the via H is 3 μm.
Optionally, the first touch insulating layer 171 includes an organic layer, so as to reduce the difficulty of the etching process of the through hole H while effectively protecting the first touch conductive layer 131.
As illustrated in fig. 2, 3, 4, and 6, the cross-sectional area of the through hole H gradually decreases in a direction in which the electrostatic liquid 4 is directed toward the display panel 1, so that the electrostatic liquid 4 may be more stably contained in the through hole H.
Illustratively, in embodiments of the present invention, the electrostatic liquid 4 at least partially fills the through-hole H. Alternatively, as shown in fig. 2 and 3, the embodiment of the present invention may enable the electrostatic liquid 4 to partially fill the through hole H, and the polarizer 2 to partially fill the through hole H.
Alternatively, as shown in fig. 2 and 3, the orthographic projection of the first end D1 of the polarizer 2 on the plane of the display panel is located in the through hole H. That is, the polarizer 2 extends from the display area AA up to above the through-hole H. By the arrangement, the electrostatic liquid 4 and the polaroid 2 can be in contact electrical connection at the position corresponding to the through hole H, so that the contact area of the electrostatic liquid 4 and the polaroid 2 is increased, the contact resistance of the electrostatic liquid 4 and the polaroid 2 is reduced, and static electricity generated in the non-display area NA can be conducted away more quickly through the conductive layer 20 in the polaroid 2.
Alternatively, as shown in fig. 4, the through hole H may be completely filled with the electrostatic liquid 4 in the embodiment of the present invention.
As shown in fig. 4, the first end D1 is offset from the through hole H in a direction perpendicular to the plane of the display panel 1, and the first end D1 is located on a side of the through hole H near the display area AA. By the arrangement, when the polaroid 2 is attached, the flatness of the film layer below the polaroid 2 can be ensured, and the attachment yield of the polaroid 2 is ensured. Moreover, based on the arrangement mode, the coverage area of the static liquid 4 on the surface of the grounding pad 31 can be increased, which is beneficial to reducing the contact resistance between the static liquid 4 and the grounding pad 31.
As shown in fig. 7, fig. 7 is a schematic cross-sectional view of another display module according to an embodiment of the invention, where the display module further includes a cover plate 5, and the cover plate 5 covers the display panel 1. The cover plate 5 is located at a side of the polarizer 2 remote from the display panel 1. Alternatively, as shown in fig. 7, the cover plate 5 is bonded to the polarizer 2 through an optical adhesive 6. Alternatively, the cover 5 may be a 3D curved cover, i.e., an edge portion of the cover 5 may be curved toward one side of the display panel 1. Alternatively, as shown in fig. 7, the cover plate 5 may be provided as a flat surface in the embodiment of the present invention. In the process of performing an electrostatic test on the display module or using the display module, static electricity generated on the surface of the cover plate 5 may be conducted to the polarizer 2 and transferred to the ground pad 31 through the polarizer 2 and the electrostatic liquid.
Alternatively, as shown in fig. 2, 3 and 4, the surface of the static liquid 4 remote from the display panel 1 and the surface of the polarizer 2 remote from the display panel 1 are coplanar. That is, the distance between the surface of the electrostatic liquid 4 away from the display panel 1 and the display panel 1 is equal to the distance between the surface of the polarizer 2 away from the display panel 1 and the display panel 1. By the arrangement, a flat bearing surface can be provided for the cover plate 5 or other structures positioned on one side of the polaroid 2 away from the display panel 1, which is beneficial to improving the structural stability of the display module.
As shown in fig. 7, the display module further includes a first support film 71 and a second support film 72, wherein the first support film 71 is located on a side of the display panel 1 away from the light emitting side, and the second support film 72 is located on a side of the first support film 71 away from the display panel 1. The first support film 71 and the second support film 72 are for supporting the display panel 1.
Optionally, the first support film 71 comprises polyimide. The second support film 72 comprises a metal foil.
Illustratively, the metal foil is grounded. In the embodiment of the invention, the metal foil not only can play a supporting role on the display panel 1, but also can radiate heat released by the display panel 1 in the display process, and in addition, the metal foil can play a role in electrostatic transmission, thereby being beneficial to increasing the dissipation path of static electricity in the display module.
Illustratively, the metal foil includes copper foil and/or aluminum foil to provide the metal foil with high electrical conductivity and good heat dissipation and ductility. When the display panel 1 is a flexible display panel and the display module is bent, the copper foil and the aluminum foil can be well adapted to bending deformation of the display module.
As shown in fig. 7, the display module further includes a foam layer 73, which can absorb stress when the display module is impacted or subjected to other external forces during movement or use of the display module, and plays a role in buffering the stress of the display panel 1 to protect the display panel 1 from damage. Optionally, the Foam layer 73 comprises Super Clean Foam (SCF).
As shown in fig. 8, fig. 8 is a schematic top view of another display module according to an embodiment of the invention, the display panel 1 further includes a light-transmitting area TA, and the display area AA at least partially surrounds the light-transmitting area TA. The light transmittance in the transparent area TA is greater than that in other areas of the display area AA. In the embodiment of the present invention, a photosensitive element such as a camera or an iris sensor may be disposed corresponding to the light transmission area TA. Ambient light can enter the photosensitive element through the light transmission area TA. In an embodiment of the invention, at least part of the static liquid 4 and/or at least part of the polarizer 2 surrounds the light-transmitting zone TA. In fig. 8, the electrostatic liquid 4 partially surrounds the transparent area TA, so that the static electricity generated at the periphery of the transparent area TA is conducted away by the electrostatic liquid 4 or the polarizer 2, and the electrostatic reliability of the display panel is further improved.
The embodiment of the invention also provides a display device, as shown in fig. 9, fig. 9 is a schematic diagram of the display device provided by the embodiment of the invention, and the display device includes the display module 100. The specific structure of the display module 100 is described in detail in the above embodiments, and will not be described herein. Of course, the display device shown in fig. 9 is only a schematic illustration, and the display device may be any electronic apparatus having a display function, such as a mobile phone, a tablet computer, a notebook computer, an electronic book, or a television.
According to the display device provided by the embodiment of the invention, the polaroid positioned on the light emitting side of the display panel is arranged in the display module, the polaroid is arranged to comprise the conductive layer, the grounding pad and the electrostatic liquid positioned in the non-display area are arranged in the display module, the orthographic projection of the electrostatic liquid on the plane of the display panel is positioned in the non-display area, the electrostatic liquid is electrically connected with the conductive layer and the grounding pad, the electrostatic charge can be conducted to the electrostatic liquid through the polaroid, and then conducted to the grounding pad through the electrostatic liquid, the electrostatic conduction efficiency in the display device can be improved, the electrostatic charge is prevented from moving into the display area, the influence of the electrostatic charge on the display of the display device is avoided, the electrostatic charge is prevented from accumulating to a certain degree, and the electrostatic breakdown problem is facilitated to be improved.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather to enable any modification, equivalent replacement, improvement or the like to be made within the spirit and principles of the invention.

Claims (11)

1. A display module, comprising:
a display panel including a display region and a non-display region;
the polaroid is positioned on the light emitting side of the display panel and comprises a conductive layer; the orthographic projection of the polaroid on the plane of the display panel is at least partially positioned in the display area;
the orthographic projection of the grounding pad on the plane of the display panel is positioned in the non-display area;
the orthographic projection of the electrostatic liquid on the plane where the display panel is located is positioned in the non-display area; the electrostatic liquid electrically connects the conductive layer and the ground pad.
2. The display module assembly of claim 1, wherein the display module assembly comprises,
the polarizer comprises a first end part, the first end part is positioned at one side of the polarizer away from the display area along the direction parallel to the plane where the display panel is positioned, the conducting layer is exposed at the first end part, and the electrostatic liquid is in contact with the first end part.
3. The display module assembly of claim 2, wherein the display module assembly comprises,
the static liquid is in contact with the ground pad.
4. The display module assembly of claim 3, wherein the display module assembly,
and the electrostatic liquid at least partially overlaps the grounding pad along the direction perpendicular to the plane of the display panel.
5. The display module assembly of claim 4, wherein the display module assembly comprises,
and orthographic projection of the electrostatic liquid on the plane of the display panel covers the grounding pad.
6. The display module assembly of claim 1, wherein the display module assembly comprises,
the display panel comprises a substrate, and an array film layer and a touch film layer which are stacked on the same side of the substrate; the array film layer is positioned between the substrate and the touch film layer;
the touch control film layer comprises a first touch control conductive layer, and the distance between the first touch control conductive layer and the substrate is larger than or equal to the distance between other conductive layers in the touch control film layer and the substrate;
the grounding pad comprises a first pad metal layer, and the first pad metal layer and the first touch conductive layer are arranged on the same layer.
7. The display module assembly of claim 6, wherein the display module assembly comprises,
the touch control film layer further comprises a first touch control insulating layer, the first touch control insulating layer is located on one side, far away from the substrate, of the first touch control conducting layer, the first touch control insulating layer comprises a through hole, and the through hole and the grounding pad are overlapped along the direction perpendicular to the plane where the display panel is located.
8. The display module assembly of claim 7, wherein the display module assembly,
the electrostatic liquid at least partially fills the through hole.
9. The display module assembly of claim 7, wherein the display module assembly,
the polarizer comprises a first end part, the first end part is positioned at one side of the polarizer away from the display area along the direction parallel to the plane where the display panel is positioned, the conducting layer is exposed at the first end part, and the orthographic projection of the first end part on the plane where the display panel is positioned in the through hole.
10. The display module assembly of claim 7, wherein the display module assembly,
the polarizer comprises a first end part, the first end part is positioned at one side of the polarizer away from the display area along the direction parallel to the plane where the display panel is positioned, the conducting layer is exposed at the first end part, and the first end part is staggered with the through hole along the direction perpendicular to the plane where the display panel is positioned.
11. A display device comprising a display module according to any one of claims 1-10.
CN202310530645.5A 2023-05-09 2023-05-09 Display module and display device Pending CN116486690A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202310530645.5A CN116486690A (en) 2023-05-09 2023-05-09 Display module and display device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202310530645.5A CN116486690A (en) 2023-05-09 2023-05-09 Display module and display device

Publications (1)

Publication Number Publication Date
CN116486690A true CN116486690A (en) 2023-07-25

Family

ID=87217765

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202310530645.5A Pending CN116486690A (en) 2023-05-09 2023-05-09 Display module and display device

Country Status (1)

Country Link
CN (1) CN116486690A (en)

Similar Documents

Publication Publication Date Title
US11137648B2 (en) Displays with minimized border regions having an apertured TFT layer for signal conductors
EP3916785A1 (en) Display substrate, tiled screen and manufacturing method therefor
US9501165B2 (en) Organic light emitting diode display device with touch screen and method of fabricating the same
CN111864115B (en) Display panel and display device
TWI603467B (en) Narrow border displays for electronic devices
KR102523979B1 (en) Display device
CN110568963B (en) Display panel, display substrate and display device
CN110462567B (en) Touch substrate, touch screen and electronic device
KR102446203B1 (en) Driving integrated circuit and display device including the same
KR20110024552A (en) Display device
CN113362723A (en) Display module and display device
KR20110037106A (en) Anisotropic conductive film and display device having the same
CN113517262A (en) Display panel, manufacturing method thereof and display device
KR20130105163A (en) Semiconductor packages and display devices including the same
CN110571321B (en) Electronic device
CN217563982U (en) Display module and display device
CN116486690A (en) Display module and display device
CN111540754B (en) Micro light-emitting diode display panel, manufacturing method thereof and display device
US20220238465A1 (en) Method of manufacturing electronic device
KR101427131B1 (en) Flexible Printed Circuit For Image Display Device
CN113826449A (en) Display module and display device
CN114114762A (en) Display substrate, manufacturing method thereof and display device
CN113963632B (en) Display module and display device
CN118678831A (en) Display device
KR20220077005A (en) Display apparatus

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination