CN113745209B - Display device and method for manufacturing the same - Google Patents
Display device and method for manufacturing the same Download PDFInfo
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- CN113745209B CN113745209B CN202110952558.XA CN202110952558A CN113745209B CN 113745209 B CN113745209 B CN 113745209B CN 202110952558 A CN202110952558 A CN 202110952558A CN 113745209 B CN113745209 B CN 113745209B
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L25/00—Assemblies consisting of a plurality of individual semiconductor or other solid state devices ; Multistep manufacturing processes thereof
- H01L25/16—Assemblies consisting of a plurality of individual semiconductor or other solid state devices ; Multistep manufacturing processes thereof the devices being of types provided for in two or more different main groups of groups H01L27/00 - H01L33/00, or in a single subclass of H10K, H10N, e.g. forming hybrid circuits
- H01L25/167—Assemblies consisting of a plurality of individual semiconductor or other solid state devices ; Multistep manufacturing processes thereof the devices being of types provided for in two or more different main groups of groups H01L27/00 - H01L33/00, or in a single subclass of H10K, H10N, e.g. forming hybrid circuits comprising optoelectronic devices, e.g. LED, photodiodes
-
- 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
- G02F1/1343—Electrodes
- G02F1/134309—Electrodes characterised by their geometrical arrangement
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- 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
-
- 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
- H01L2933/00—Details relating to devices covered by the group H01L33/00 but not provided for in its subgroups
- H01L2933/0008—Processes
- H01L2933/0033—Processes relating to semiconductor body packages
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2933/00—Details relating to devices covered by the group H01L33/00 but not provided for in its subgroups
- H01L2933/0008—Processes
- H01L2933/0033—Processes relating to semiconductor body packages
- H01L2933/0058—Processes relating to semiconductor body packages relating to optical field-shaping elements
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- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Nonlinear Science (AREA)
- General Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- Power Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Mathematical Physics (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Optics & Photonics (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
- Geometry (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- Electroluminescent Light Sources (AREA)
Abstract
The application discloses a display device and a preparation method thereof. The display device includes a display panel and a liquid crystal dimming panel. The display panel includes a first substrate, a display driving circuit layer, and a plurality of light emitting devices. The display driving circuit layer is positioned on one side of the first substrate. The display driving circuit layer includes a plurality of display scan lines. The plurality of light emitting devices are located at a side of the display driving circuit layer away from the first substrate. The display scan line is electrically connected to the plurality of light emitting devices. The liquid crystal dimming panel is positioned on the light emitting side of the display panel. The liquid crystal dimming panel comprises a common electrode, a liquid crystal layer and a plurality of dimming electrodes arranged opposite to the common electrode. The front projection of the dimming electrode on the first substrate covers the front projection of the at least one light emitting device on the first substrate. The dimming electrode and the common electrode drive the deflection of liquid crystal molecules in the liquid crystal layer to control the light-emitting intensity of at least one light-emitting device. The display device provided by the application can improve the phenomenon of uneven display.
Description
Technical Field
The application relates to the technical field of display, in particular to a display device and a preparation method thereof.
Background
Part of the electrical signals in the display panel are transmitted from the circuit board to the corresponding light emitting device through a Chip On Film (COF), thereby controlling the lighting of the light emitting device. Along with the development of the large-scale display panel, the display panel has longer signal wiring far away from the flip chip film, and the resistance of the signal wiring is larger. When the same electric signal is supplied, the light emitting intensity of the light emitting device on the side far from the flip chip film and the light emitting device on the side close to the flip chip film are not uniform, resulting in a phenomenon (Mura) in which display unevenness occurs in the display panel.
Disclosure of Invention
The application aims to provide a display device, which can improve the phenomenon of uneven display of the display device.
An embodiment of the present application provides a display device including:
the display panel comprises a first substrate, a display driving circuit layer and a plurality of light emitting devices, wherein the display driving circuit layer is positioned on one side of the first substrate, the display driving circuit layer comprises a plurality of display scanning lines, the light emitting devices are positioned on one side, far away from the first substrate, of the display driving circuit layer, and the display scanning lines are electrically connected with the light emitting devices;
The liquid crystal dimming panel is positioned on the light emitting side of the display panel and comprises a common electrode, a liquid crystal layer and a plurality of dimming electrodes which are arranged opposite to the common electrode; the front projection of the dimming electrode on the first substrate covers at least one light emitting device, and the dimming electrode and the common electrode drive liquid crystal molecules to deflect so as to control the emergent light intensity of at least one light emitting device.
In some embodiments, the liquid crystal dimming panel further comprises:
the first polaroid is positioned on the light emitting side of the display panel, and a common electrode layer is arranged on one side of the first polaroid, which is far away from the display panel, and comprises the common electrode;
the second substrate is arranged on one side, far away from the display panel, of the liquid crystal dimming panel opposite to the first polaroid, a dimming driving circuit layer and a dimming electrode layer are arranged on one side, close to the liquid crystal layer, of the second substrate, the dimming driving circuit layer comprises a dimming scanning line, a dimming data line and a thin film transistor connected with the dimming scanning line and the dimming data line, the dimming electrode layer comprises a plurality of dimming electrodes, and the dimming electrodes are connected with the thin film transistor;
The second polaroid is positioned on one side of the second substrate far away from the liquid crystal layer;
and the frame glue is positioned between the second substrate and the display panel to seal the liquid crystal layer.
In some embodiments, the dimming electrode layer further includes a plurality of common electrode lines disposed at a side of the second substrate near the liquid crystal layer,
the liquid crystal dimming panel further comprises at least one first conductive piece, and the first conductive piece is electrically connected with the common electrode wire and the common electrode.
In some embodiments, a plurality of the first conductive members are disposed on at least one common electrode line, the plurality of first conductive members are located in a display area of the display device, and the plurality of first conductive members are uniformly distributed in an extending direction of the common electrode line.
In some embodiments, the common electrode layer further includes a connection terminal; the liquid crystal dimming panel comprises a liquid crystal display scanning line, and is characterized in that the dimming electrode layer further comprises an auxiliary electrode, the auxiliary electrode is arranged opposite to the connecting terminal, the liquid crystal dimming panel further comprises at least one second conductive piece, the second conductive piece is located between the connecting terminal and the auxiliary electrode to be electrically connected with the connecting terminal and the auxiliary electrode, a through hole is formed in the first polarizer, and the connecting terminal is electrically connected to the display scanning line through the through hole.
In some embodiments, at least one of the display scan lines corresponds to a plurality of the second conductive elements, and the plurality of the second conductive elements are uniformly distributed in an extending direction of the display scan line.
In some embodiments, the liquid crystal dimming panel further includes a light shielding layer, the light shielding layer is provided with a plurality of openings, the openings are arranged corresponding to the light emitting devices, and the openings expose the light emitting devices;
the liquid crystal layer also comprises a plurality of conductive pieces, and the orthographic projection of the conductive pieces on the display panel is positioned in the orthographic projection range of the shading layer on the display panel.
In some embodiments, the display panel further includes a planarization layer covering the light emitting device and the display driving circuit layer, and the liquid crystal dimming panel is connected to the planarization layer.
In some embodiments, the liquid crystal dimming panel is connected with the first substrate.
The embodiment of the application also provides a preparation method of the display device, which comprises the following steps:
forming a display driving circuit layer on a first substrate, the display driving circuit layer including a plurality of display scan lines;
connecting a plurality of light emitting devices with the display driving circuit layer, the display scanning line electrically connecting the plurality of light emitting devices;
Forming a planarization layer on the plurality of light emitting devices, the planarization layer covering the light emitting devices and the display driving circuit layer;
forming a first polarizer on the flat layer;
forming a common electrode layer on the first polarizer, the common electrode layer including a common electrode;
forming a second polarizer on a second substrate;
forming a dimming driving circuit layer on the second polaroid, wherein the dimming driving circuit layer comprises a dimming scanning line, a dimming data line and a thin film transistor connected with the dimming scanning line and the dimming data line;
forming a dimming electrode layer on the dimming driving circuit layer, wherein the dimming electrode layer comprises a plurality of dimming electrodes, and the dimming electrodes are connected with the thin film transistor;
attaching the first substrate and the second substrate, forming a liquid crystal layer between the first substrate and the second substrate, wherein the liquid crystal layer is positioned between the dimming electrode and the public electrode, the dimming electrode and the public electrode drive liquid crystal molecules to deflect so as to control the emergent light intensity of at least one light emitting device, and the orthographic projection of the dimming electrode on the first substrate covers at least one light emitting device;
The common electrode layer and the dimming electrode layer are connected through frame glue;
and forming a liquid crystal layer in the frame glue, wherein the dimming electrode and the common electrode drive liquid crystal to deflect so as to control the light intensity of at least one light emitting device, and the orthographic projection of the dimming electrode on the first substrate covers at least one light emitting device.
The embodiment of the application also provides a preparation method of the display device, which comprises the following steps:
forming a first polarizer on a first substrate;
forming a common electrode layer on the first polarizer, the common electrode layer including a common electrode;
turning over the first substrate, and forming a display driving circuit layer on one side of the first substrate far away from the first polarizing layer, wherein the display driving circuit layer comprises a plurality of display scanning lines;
connecting a plurality of light emitting devices with the display driving circuit layer, the display scanning line electrically connecting the plurality of light emitting devices;
forming a planarization layer on the plurality of light emitting devices, the planarization layer covering the light emitting devices and the display driving circuit layer;
forming a second polarizer on a second substrate;
forming a dimming driving circuit layer on the second polaroid, wherein the dimming driving circuit layer comprises a dimming scanning line, a dimming data line and a thin film transistor connected with the dimming scanning line and the dimming data line;
Forming a dimming electrode layer on the dimming driving circuit layer, wherein the dimming electrode layer comprises a plurality of dimming electrodes, and the dimming electrodes are connected with the thin film transistor;
and attaching the first substrate and the second substrate, forming a liquid crystal layer between the first substrate and the second substrate, wherein the liquid crystal layer is positioned between the dimming electrode and the public electrode, the dimming electrode and the public electrode drive liquid crystal molecules to deflect so as to control the light intensity of at least one light emitting device, and the orthographic projection of the dimming electrode on the first substrate covers at least one light emitting device.
The display device provided by the embodiment of the application comprises a display panel and a liquid crystal dimming layer. The display panel includes a plurality of light emitting devices for display. The liquid crystal dimming panel is positioned on the light emitting side of the display panel. The liquid crystal dimming panel comprises a common electrode, a liquid crystal layer and a plurality of dimming electrodes arranged opposite to the common electrode. The front projection of the dimming electrode on the first substrate covers the front projection of the at least one light emitting device on the first substrate. According to the application, the deflection of the liquid crystal in the liquid crystal layer is driven by the dimming electrode and the common electrode to control the light-emitting intensity of the light-emitting device, so that the light-emitting intensity of the light-emitting device far away from the flip-chip film side and the light-emitting device near the flip-chip film side is adjusted, and the phenomenon of uneven display of the display panel is improved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the description of the embodiments of the present application will be briefly described below, it being obvious that the drawings in the following description are only some examples and implementations of the application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic structural diagram of a display device according to a first embodiment of the present application.
Fig. 2 is a schematic structural diagram of a display device according to a second embodiment of the present application.
Fig. 3 is a flowchart of a method for manufacturing a display device according to a first embodiment of the present application.
Fig. 4 is a schematic diagram of a first structure of a method for manufacturing a display device according to a first embodiment of the present application.
Fig. 5 is a schematic diagram of a second structure of a method for manufacturing a display device according to the first embodiment of the application.
Fig. 6 is a flowchart of a method for manufacturing a display device according to a second embodiment of the present application.
Fig. 7 is a schematic diagram of a first structure of a method for manufacturing a display device according to a second embodiment of the application.
Fig. 8 is a second schematic structural diagram of a method for manufacturing a display device according to a second embodiment of the present application.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. It will be apparent that the described embodiments are only some, but not all, embodiments of the application. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to fall within the scope of the application.
It should be noted that the ordinal numbers of the first and second and the like mentioned in the present application do not represent any order, number or importance, but are used for distinguishing different parts. The terms of directions such as up, down, left and right are only referred to in the attached drawings. The terms of positional relationship such as "one side" and "another side" are used herein to distinguish between the different parts. Therefore, the use of numerical, directional and positional relationship terms is intended to illustrate and understand the present application, and is not intended to limit the present application. In the application, unless explicitly stated and defined otherwise, a first feature on one side, [ up ] or [ down ] of a second feature may include the first and second features being either directly or through another feature in contact therewith, not directly. Like numbers refer to like elements throughout the specification. Because the dimensions and thicknesses of the various components illustrated in the figures are presented for ease of illustration, the present disclosure is not necessarily limited to the illustrated dimensions and thicknesses of the various components.
As shown in fig. 1, the display device 10 provided by the present application includes a display panel 100 and a liquid crystal dimming panel 200.
The display panel 100 includes a first substrate 101, a display driving circuit layer 102, and a plurality of light emitting devices 103 and a planarization layer 104.
The first substrate 101 may be a hard substrate such as a glass substrate. The display driving circuit layer 102 is located at one side of the first substrate 101.
The display driving circuit layer 102 includes a plurality of display scan lines, a plurality of display data lines, and thin film transistors (not shown) connected to the display scan lines and the display data lines. The display driving circuit layer 102 is composed of a plurality of patterned conductive layers and insulating layers. The material of the conductive layer of the display driving circuit layer 102 may include a metal material such as one or more of copper (Cu), aluminum (Al), molybdenum (Mo), or titanium (Ti). The material of the conductive layer in the display driver circuit layer 102 may also include a metal oxide conductive material such as Indium Tin Oxide (ITO). The thickness of the conductive layer is greater than or equal to 2 microns. Specifically, the thickness of the conductive layer may be 2 microns, 3 microns, or 5 microns. The patterned conductive layer in the display driver circuit layer 102 forms signal traces in the display driver circuit layer 102. The thickness of the conductive layer being greater than or equal to 2 microns means that the thickness of the signal trace is greater than or equal to 2 microns. The thickness of the signal trace is greater than or equal to 2 micrometers, so that the voltage Drop (IR Drop) of the display panel 100 can be effectively reduced, and the display effect of the display panel 100 can be improved.
The plurality of light emitting devices 103 are located at a side of the display driving circuit layer 102 remote from the first substrate 101. The plurality of light emitting devices 103 may be arrayed on the display driving circuit layer 102. The driving circuit layer is connected to the plurality of light emitting devices 103, and provides an electrical signal to the light emitting devices 103. The display scan lines of the display drive circuit layer 102 are electrically connected to the plurality of light emitting devices 103. Specifically, the display scan line may be electrically connected to the plurality of light emitting devices 103 located on the same row, and provide an electrical signal to the plurality of light emitting devices 103 located on the same row. The light emitting device 103 may include a light emitting diode Chip (LED Chip), a sub-millimeter light emitting diode Chip (Mini LED Chip), or a Micro light emitting diode Chip (Micro LED Chip). The light emitting device 103 may emit light of different colors, such as red light, blue light, or green light. Three light emitting devices 103 which are positioned adjacently and respectively emit light of different colors form a pixel unit, thereby realizing color display of the display device 10.
The planarization layer 104 is located at a side of the driving circuit layer where the light emitting device 103 is disposed. The planarization layer 104 covers the light emitting device 103 and the display driving circuit layer 102. The planarization layer 104 may include a transparent PFA layer (Polymer Film On Array, array substrate-side organic film). The flat surface of the flat layer 104 on the side far away from the light emitting device 103 is beneficial to improving the bonding degree of the flat layer 104 and other film layers. The material of the planarization layer 104 may be an organic insulating material, such as a silicone gel or a thermal compression molding. The flat layer 104 covers the light emitting device 103 and the display driving circuit layer 102, plays a role in isolating water and oxygen from the light emitting device 103 and the display driving circuit layer 102, and is beneficial to prolonging the service life of the display panel 100.
The liquid crystal dimming panel 200 is positioned at the light emitting side of the display panel 100. The panel liquid crystal dimming panel 200 includes a first polarizer 201, a common electrode layer 202, a liquid crystal layer 203, a dimming electrode layer 204, a dimming driving circuit layer 205, a second polarizer 206, a second substrate 207, and a frame adhesive 208.
The side of the display panel 100 where the flat layer 104 is disposed is a light emitting side. The first polarizer 201 is located at the light emitting side of the display panel 100. The first polarizer 201 is connected to the flat layer 104 of the display panel 100.
The common electrode layer 202 is located at a side of the first polarizer 201 remote from the display panel 100. The common electrode layer 202 includes a plurality of common electrodes 2021. The material of the common electrode layer 202 may include ITO. ITO is a transparent conductive material. Therefore, the common electrode 2021 of the present application is a transparent electrode, so that the light transmittance of the display device 10 can be ensured, and the display effect of the display device 10 can be ensured.
The liquid crystal layer 203 is located at a side of the common electrode layer 202 remote from the first polarizer 201. The liquid crystal layer 203 is composed of liquid crystal molecules 2031.
The dimming electrode layer 204 is located at a side of the liquid crystal layer 203 away from the first polarizer 201. The dimming electrode layer 204 includes a plurality of dimming electrodes 2041. The dimming electrode 2041 and the common electrode 2021 are disposed opposite to each other. The front projection of the dimming electrode 2041 onto the first substrate 101 covers the front projection of the at least one light emitting device 103 onto the first substrate 101. The liquid crystal molecules 2031 are located between the dimming electrode 2041 and the common electrode 2021. When the current is supplied, an electric field is formed between the light control electrode 2041 and the common electrode 2021, and the liquid crystal molecules 2031 between the light control electrode 2041 and the common electrode 2021 are controlled to deflect. The material of the dimming electrode layer 204 may include ITO. ITO is a transparent conductive material. Therefore, the dimming electrode 2041 of the present application is a transparent electrode, which can ensure the light transmittance of the display device 10 and the display effect of the display device 10.
The dimming driving circuit layer 205 is located on a side of the light shielding layer 209 away from the dimming electrode layer 204. The dimming driving circuit layer 205 includes a dimming scan line, a dimming data line, and a thin film transistor (not shown) connected to the dimming scan line and the dimming data line. The thin film transistors are in one-to-one correspondence with the light modulating electrodes 2041. The thin film transistor is connected to the dimming electrode 2041 to control the on and off of the dimming electrode 2041.
The second polarizer 206 is located on a side of the dimming driving circuit layer 205 away from the dimming electrode layer 204. The second polarizer 206 is disposed opposite to the first polarizer 201. Alternatively, the light transmission axis of the second polarizer 206 is perpendicular to the light transmission axis of the first polarizer 201.
The second substrate 207 is located at a side of the second polarizer 206 away from the dimming driving circuit layer 205. The second substrate 207 may be a hard substrate such as a glass substrate. The second substrate 207 can protect the liquid crystal dimming panel 200 from damaging the film layers related to the liquid crystal dimming panel 200.
The frame glue 208 is located at the edge of the liquid crystal dimming panel 200. The sealant 208 is located between the second substrate 207 and the display panel 100. Specifically, the sealant 208 is located between the common electrode layer 202 and the dimming electrode layer 204. The sealant 208 is used for sealing the liquid crystal layer 203, so as to avoid leakage of the liquid crystal molecules 2031 in the liquid crystal layer 203.
In the present application, the liquid crystal dimming layer is used to adjust the light output intensity of the display panel 100. The principle of the liquid crystal dimming layer for adjusting the light output intensity of the display panel 100 is as follows:
a dimming electrode of the dimming electrode layer 204 covers at least one light emitting device 103 in the display panel 100. The common electrode 2021 and the dimming electrode 2041 are disposed opposite to each other. When the current is supplied, an electric field is formed between the common electrode 2021 and the light-adjusting electrode 2041, and the liquid crystal between the corresponding light-adjusting electrode 2041 and the common electrode 2021 is controlled to be deflected, so that the light-emitting intensity of the light-emitting device 103 in the corresponding region of the corresponding light-adjusting electrode 2041 can be controlled. When the display panel 100 has a display non-uniformity phenomenon, the light output intensity of the light emitting devices 103 of the display panel 100 at different positions can be adjusted by the liquid crystal dimming panel 200, thereby improving the display non-uniformity phenomenon of the display panel 100.
The liquid crystal dimming panel 200 further includes a light shielding layer 209, and the light shielding layer 209 is located between the dimming electrode layer 204 and the dimming driving circuit layer 205. The light shielding layer 209 is provided with a plurality of openings 2091. The plurality of openings 2091 are in one-to-one correspondence with the light emitting devices 103 of the display panel 100. The opening 2091 exposes the light emitting device 103. Meaning that the light shielding layer 209 is located between adjacent light emitting devices 103. In the application, the light shielding layer 209 is arranged in the liquid crystal dimming panel 200, and the light shielding layer 209 is positioned between the adjacent light emitting devices 103, so that the crosstalk of light emitted by the adjacent light emitting devices 103 can be avoided, the contrast ratio of the display device 10 is improved, and the display effect of the display device 10 is improved.
The liquid crystal dimming panel 200 further includes a plurality of conductive members 210. The conductive member 210 electrically connects the common electrode layer 202 and the dimming electrode layer 204. The conductive member 210 is in contact with the common electrode layer 202 and the dimming electrode layer 204. The conductive member 210 may also serve as a support to further improve the reliability of the display device 10. The conductive member 210 may be disposed in the frame adhesive 208 and the liquid crystal layer 203. When the conductive members 210 are positioned in the liquid crystal layer 203, the conductive members 210 are uniformly distributed within the liquid crystal layer 203. The front projection of the conductive element on the display panel 100 is located in the range of the light shielding layer 209 on the display panel 100. The conductive member is disposed between the openings 2091 adjacent to the light shielding layer 209, so as to prevent the conductive member 210 from affecting the light output of the display device 10 and prevent the conductive member from affecting the light output of the display device 10.
Conductive element 210 includes a first conductive element 2101. The first conductive element 2101 may be positioned within the frame glue 208 and within the liquid crystal layer 203. The liquid crystal layer 203 corresponds to a region where the light emitting device 103 of the display apparatus 10 is disposed, meaning that the first conductive member 2101 is located within the display area of the display apparatus 10. The dimming electrode layer 204 further includes a common electrode line 2042. The first conductive member 2101 electrically connects the common electrode 2021 and the common electrode line 2042. When the common electrode layer 202 is disposed within the liquid crystal layer 203, the plurality of first conductive members 2101 are uniformly distributed in the extending direction of the common electrode 2021. The common electrode line 2042 provides an electrical signal to the common electrode via the first conductive member 2101, so that IR Drop phenomenon caused by too long common electrode 2021 in the display panel 100 can be reduced, stability of signals at the end of the common electrode 2021 is improved, and the signals of the common electrode 2021 are ensured to be in a stable state. Meanwhile, the plurality of first conductive elements 2101 are uniformly distributed in the extending direction of the same common electrode 2021, and the common electrode line 2042 can simultaneously provide electric signals to the same common electrode 2021 at multiple ends, so that the uniformity of the common electrode 2021 can be improved, and the stability of signals of the common electrode 2021 can be further improved.
Conductive element 210 may also include a second conductive element 2102. The second conductive member 2102 may be located in the frame paste 208 and in the liquid crystal layer 203 (in the display area of the display device 10). The dimming layer further includes a plurality of auxiliary electrodes 2043. The common electrode layer 202 further includes a plurality of connection terminals 2022. The connection terminal 2022 is connected to the display driver circuit layer 102 of the display panel 100 through the via 200 a. Specifically, the connection terminal 2022 is connected to a display scan line (not shown) of the display driver circuit layer 102. At least one display scan line corresponds to a plurality of second conductive elements 2102. The plurality of second conductive members 2102 are uniformly distributed on the display scan line. The second conductive member 2102 is located between the auxiliary electrode 2043 and the connection terminal 2022 to electrically connect the auxiliary electrode 2043 and the connection terminal 2022. The auxiliary electrode 2043 supplies an electric signal to the display scan line through the second conductive member 2102 and the connection terminal 2022. The IR Drop phenomenon caused by overlong display scanning lines can be reduced. Meanwhile, the plurality of second conductive members 2102 are uniformly distributed on the same display scan line, and the auxiliary electrode 2043 can simultaneously provide an electric signal for the same display scan line at multiple ends, so that the IR Drop phenomenon is further eliminated, and the display effect of the display panel 100 is improved.
Conductive element 210, first conductive element 2101, and second conductive element 2102 can comprise gold balls. Wherein, the base material of the gold ball is a resin ball, and the surface of the resin ball is coated with a metal material to form the gold ball. Gold balls may be formed in the frame glue 208 and the liquid crystal layer 203 through a dotting process.
The flip chip film 300 of the display device 10 is disposed at one end of the liquid crystal dimming panel 200. Specifically, the flip chip film 300 is connected to the light modulating electrode layer 204. The flip chip film 300 can provide corresponding electrical signals for the liquid crystal dimming panel 200 to control the deflection of the liquid crystal molecules 2031 in the liquid crystal layer 203, thereby realizing the adjustment of the light intensity of the dimming electrode layer 204 on the display panel 100. The flip chip film 300 may also transmit an electrical signal for turning on and off the LED lamp to the display driving circuit layer 102 through the auxiliary electrode 2043, the second conductive member 2102, and the connection terminal 2022, thereby controlling the LED lamp to be turned on and off, and realizing normal display of the display panel 100.
The flip chip film 300 is disposed at one end of the liquid crystal dimming panel 200 in the present application. When a plurality of display devices 10 are spliced to form a large-sized spliced display device 10, the placement of the flip chip film 300 at one end of the liquid crystal dimming panel 200 in the present application can reduce the gap of the splice seam between the display panels 100, which is beneficial to improving the display effect of the spliced display device.
It is to be understood that the light shielding layer 209 in the first embodiment may be disposed between the first polarizer 201 and the common electrode layer 202, and the location where the light shielding layer 209 is disposed is not particularly limited in the present application.
The conductive members 210 (the first conductive member 2101 and the second conductive member 2102) in the first embodiment may be provided only in the bezel, or only in the liquid crystal layer 203 of the display device 10 (in the display area of the display device 10). In the first embodiment, the conductive members (the first conductive member 2101 and the second conductive member 2102) are provided in the frame and the liquid crystal layer 203 at the same time, but the present application is not limited thereto.
When the connection terminal 2022 is connected to the display driver circuit layer 102 through the via hole 200a, the via hole 200a is disposed between two adjacent light emitting devices 103 in the flat layer 104, so that damage to the light emitting devices 103 caused by the via hole 200a penetrating through the light emitting devices 103 is avoided, and meanwhile, the package effect of the light emitting devices 103 is prevented from being affected due to contact between the connection terminal 2022 and the light emitting devices 103.
As shown in fig. 2, the display device 10 according to the second embodiment provided by the present application differs from the display device 10 according to the first embodiment in that:
the liquid crystal dimming panel 200 is positioned at the light emitting side of the display panel 100. The side of the display panel 100 where the first substrate 101 is disposed is a light emitting side. The first polarizer 201 of the liquid crystal dimming panel 200 is connected to the first substrate 101.
The light shielding layer 209 of the liquid crystal dimming panel 200 is positioned between the first polarizer 201 and the common electrode layer 202. It is to be understood that the light shielding layer 209 provided in the second embodiment may be disposed between the dimming electrode layer 204 and the dimming driving circuit layer 205, and the location where the light shielding layer 209 is disposed is not particularly limited in the present application.
The liquid crystal dimming panel 200 provided in the second embodiment further includes a plurality of first conductive members 2101. First conductive element 2101. The first conductive element 2101 may be positioned within the frame glue 208 and within the liquid crystal layer 203 (within the display area of the display device 10). The dimming electrode layer 204 further includes a common electrode line 2042. The first conductive member 2101 electrically connects the common electrode 2021 and the common electrode line 2042. When the common electrode layer 202 is disposed within the liquid crystal layer 203, the plurality of first conductive members 2101 are uniformly distributed in the extending direction of the common electrode 2021. The common electrode line 2042 provides an electrical signal to the common electrode 2021 through the first conductive member 2101, so that an IR Drop phenomenon caused by overlong common electrode 2021 in the display panel 100 can be reduced, the stability of the signal of the common electrode 2021 is improved, and the signal of the common electrode 2021 is ensured to be in a stable state. Meanwhile, the plurality of first conductive elements 2101 are uniformly distributed in the extending direction of the same common electrode 2021, and the common electrode line 2042 can simultaneously provide electric signals for the same common electrode 2021 at multiple ends, so that the uniformity of the common electrode 2021 can be improved, and the stability of signals of the common electrode 2021 can be further improved.
The first conductive element 2101 may be disposed in the frame glue 208 and the liquid crystal layer 203. When the first conductive element 2101 is positioned in the liquid crystal layer 203, the conductive elements 210 are uniformly distributed within the liquid crystal layer 203. The front projection of the first conductive element 2101 on the display panel 100 is positioned within the range of the light shielding layer 209 on the display panel 100. The first conductive element 2101 is disposed between two adjacent openings 2091 of the light shielding layer 209, so that the first conductive element 2101 is prevented from affecting the light output of the display device 10, and the first conductive element 2101 is prevented from affecting the light output of the display device 10. At the same time, the conductive element 2101 can also serve as a support, further improving the reliability of the display device 10.
The flip chip film 300 of the display device 10 provided in the second embodiment includes a display flip chip film 301 and a dimming flip chip film 302.
The display flip chip film 301 is disposed at one end of the display panel 100. The display flip chip film 301 provides an electrical signal for the display driving circuit layer 102 to control the LED lamp to be turned on and off, so as to realize normal display of the display panel 100.
The dimming flip chip film 302 is disposed at one end of the liquid crystal dimming panel 200. The light modulating flip chip film 302 is connected to the light modulating electrode layer 204. The corresponding electric signal can be provided for the liquid crystal dimming panel 200 to control the deflection of the liquid crystal molecules 2031 in the liquid crystal layer 203, so as to realize the adjustment of the light intensity of the display panel 100 by the dimming electrode layer 204.
Other components of the display device 10 of the second embodiment are the same as those of the display device 10 of the first embodiment, and will not be described again here.
It should be noted that the arrangement of the signal traces in the common electrode layer 202 and the dimming electrode layer 204 in the present application is merely illustrative. It will be appreciated by those skilled in the art that the wiring design of the common electrode 2021 and the connection terminal 2022 in the common electrode layer 202 and the wiring arrangement of the dimming electrode 2041, the common electrode line 2042 and the auxiliary electrode 2043 in the dimming electrode layer 204 may be set according to the specific requirements of the display device 10, and the present application is not limited thereto.
In the present application, the second polarizer 206 may be disposed between the second substrate 207 and the dimming driving circuit layer 205, and the second polarizer 206 may also be disposed at a side of the second substrate 207 remote from the dimming driving circuit layer 205. The present application is exemplified by the second polarizer 206 being disposed between the second substrate 207 and the dimming driving circuit layer 205, but is not limited thereto.
The application provides a display device. The display device includes a display panel and a liquid crystal dimming panel. The liquid crystal dimming panel comprises a common electrode, a liquid crystal layer and a plurality of dimming electrodes arranged opposite to the common electrode. The front projection of the dimming electrode on the first substrate covers at least one light emitting device on the display panel. The dimming electrode and the common electrode drive the liquid crystal molecules to deflect so as to control the emergent light intensity of at least one light emitting device. The application sets a liquid crystal dimming panel in a display device. When the liquid crystal dimming panel is electrified, an electric field is formed between the common electrode and the dimming electrode of the liquid crystal dimming panel, so that the liquid crystal between the corresponding dimming electrode and the common electrode can be controlled to deflect, and the light emitting intensity of the light emitting device corresponding to the corresponding area of the dimming electrode can be controlled. When the display panel has the phenomenon of uneven display, the liquid crystal dimming panel can be used for adjusting the light output intensity of the light emitting devices of the display panel at different positions, so that the phenomenon of uneven display of the display panel is improved.
The embodiment of the application also provides a preparation method of the display device. As shown in fig. 3 to 5, the method for manufacturing a display device according to the first embodiment of the present application specifically includes the following steps:
step B101: a display driving circuit layer is formed on the first substrate, the display driving circuit layer including a plurality of display scan lines.
As shown in the structure (a) of fig. 4, a first substrate 101 is provided. The first substrate 101 may include a hard substrate such as a glass substrate. Patterned conductive layers and insulating layers are alternately formed on the first substrate 101, thereby forming the display driving circuit layer 102. The display driving circuit layer 102 includes a plurality of display scan lines (not shown).
Step B102: the display scanning line is electrically connected with the plurality of light emitting devices.
As shown in the structure (b) of fig. 4, a plurality of light emitting devices 103 are connected to the display driving circuit layer 102 by solder paste or silver paste. The plurality of light emitting devices 103 may be arrayed on the display driving circuit layer 102. The display scan line may electrically connect a plurality of light emitting devices 103 (not shown) located on the same row.
The light emitting device 103 may include a light emitting diode Chip (LED Chip), a sub-millimeter light emitting diode Chip (Mini LED Chip), or a Micro light emitting diode Chip (Micro LED Chip).
Step B103: a flat layer is formed on the plurality of light emitting devices, the flat layer covering the light emitting devices and the display driving circuit layer.
The planarization layer 104 may be formed on the plurality of light emitting devices 103 through a spin coating process, forming the (c) structure as in fig. 4. After forming the flat layer 104, the surface of the flat layer 104 may be subjected to a planarization process by a polishing machine, so that the surface of the flat layer 104 away from the first substrate 101 is a flat surface. The planarization layer 104 covers the light emitting device 103 and the display driving circuit layer 102.
Step B104: a first polarizer is formed on the planar layer.
After the flat layer 104 is formed, the first polarizer 201 is attached to the surface of the flat layer 104, so as to form the structure (d) shown in fig. 4.
It will be appreciated that when the display device 10 needs to transfer electrical signals from other layers to the display driver circuit layer 102, after the first polarizer 201 is formed, the first polarizer 201 and the planar layer 104 may be etched to form vias. In a subsequent process, the electrical signal may be transferred to the display driving circuit layer 102 through the via hole.
Step B105: and forming a common electrode layer on the first polarizer, the common electrode layer including a common electrode.
As shown in the (e) structure of fig. 4, after the first polarizer 201 is attached, a common electrode layer 202 may be formed on the first polarizer 201. The common electrode layer 202 is subjected to patterning process to form a common electrode. The material of the common electrode layer 202 may include ITO.
It is understood that other conductive structures, such as the connection terminal 2022, may be formed on the common electrode layer 202 during the patterning process of the common electrode layer 202 according to the actual requirements of the display device 10.
Step B106: and forming a second polarizer on the second substrate.
As shown in the structure (f) of fig. 5, a second substrate 207 is provided. The second substrate 207 may include a hard substrate such as a glass substrate. A second polarizer 206 is attached to the second substrate 207.
Step B107: and forming a dimming driving circuit layer on the second polaroid. The dimming driving circuit layer comprises a dimming scanning line, a dimming data line and a thin film transistor connected with the dimming scanning line and the dimming data line.
As shown in the structure (g) of fig. 5, patterned conductive layers and insulating layers are alternately formed on the second polarizer 206, thereby forming the dimming driving circuit layer 205. The dimming driving circuit layer 205 includes a dimming scan line, a dimming data line, and a thin film transistor (not shown) connected to the dimming scan line and the dimming data line.
Step B108: and forming a dimming electrode layer on the dimming driving circuit layer, wherein the dimming electrode layer comprises a plurality of dimming electrodes, and the dimming electrodes are connected with the thin film transistor.
After the dimming driving circuit layer 205 is formed, a dimming electrode layer 204 is formed on the dimming driving circuit layer 205. The dimming electrode layer 204 is patterned to form a dimming electrode 2041. The dimming electrode 2041 is connected to a thin film transistor of the dimming driving circuit layer 205. The material of the dimming electrode layer 204 may include ITO.
It is understood that other conductive structures, such as the common electrode line 2042 or the auxiliary electrode 2043, may be formed on the dimming driving circuit layer 205 according to the actual requirements of the display device 10.
As shown in the (h) structure of fig. 5, a light shielding layer 209 may be formed on the dimming driving circuit layer 205 before the dimming electrode layer 204 is formed. The light shielding layer 209 is patterned to form a plurality of openings 2091. The plurality of openings 2091 are in one-to-one correspondence with the light emitting devices 103 of the display panel 100. Subsequently, the light modulation electrode layer 204 is formed on the light shielding layer 209, and the structure as in (i) of fig. 5 is formed.
Step B109: and attaching the first substrate and the second substrate, forming a liquid crystal layer between the first substrate and the second substrate, wherein the liquid crystal layer is positioned between a dimming electrode and a public electrode, and the dimming electrode and the public electrode drive liquid crystal molecules to deflect so as to control the light intensity of the light emitted by at least one light emitting device, and the orthographic projection of the dimming electrode on the first substrate covers the at least one light emitting device.
As shown in the structure (j) of fig. 5, the structure (e) of fig. 4 and the structure (h) of fig. 5 are aligned. The first substrate 101 and the second substrate 207 are aligned and bonded, and dropping liquid crystal molecules 2031 is formed on the common electrode layer 202 to form the liquid crystal layer 203. After the liquid crystal layer 203 is formed, a frame paste 208 is applied to the edge positions of the common electrode layer 202 and the light adjusting electrode layer 204. The common electrode layer 202 and the dimming electrode layer 204 are connected by a glue frame to realize sealing of the liquid crystal layer 203.
The flip chip film 300 is connected to the light modulating electrode layer 204 to realize the electrical signal transmission of the display device 10.
It is understood that in the present application, the frame glue 208 may be applied to the edge positions of the common electrode layer 202 and the dimming electrode layer 204 after the first substrate 101 and the second substrate 207 are aligned and bonded. Then, liquid crystal molecules 2031 are injected into the frame glue 208 to form the liquid crystal layer 203.
In the present application, after the liquid crystal layer 203 and the frame glue 208 are formed, the conductive member 210 may be injected into the frame glue 208 and the liquid crystal layer 203 through a dotting process. The conductive member 210 may include a gold ball. The base material of the gold ball is a resin ball, and the surface of the resin ball is coated with a metal material to form the gold ball.
Wherein conductive element 210 may include a first conductive element 2101 and a second conductive element 2102. The first conductive member 2101 electrically connects the common electrode 2021 and the common electrode line 2042. The common electrode line 2042 provides the electric signal to the common electrode 2021 through the first conductive member 2101, so that the IR Drop phenomenon in the display panel 100 caused by overlong signal lines can be reduced, the stability of the signal of the common electrode 2021 is improved, and the signal of the common electrode 2021 is ensured to be in a stable state. The second conductive member 2102 is electrically connected to the auxiliary electrode 2043 and the connection terminal 2022, and the connection terminal 2022 is connected to the display driver circuit layer 102 of the display panel 100 through a via hole. The auxiliary electrode 2043 supplies an electric signal to the display scan line through the second conductive member 2102 and the connection terminal 2022. The IR Drop phenomenon caused by overlong display scanning lines can be reduced.
It is understood that the first conductive element 2101 may be disposed only within the frame glue 208 or only within the liquid crystal layer 203. The second conductive member 2102 may be disposed only in the frame paste 208 or only in the liquid crystal layer 203. The (j) structure of fig. 5 is an example in which the first conductive member 2101 and the second conductive member 2102 are provided in the bezel and in the liquid crystal layer 203, but is not a limitation of the present application.
As shown in fig. 6 to 8, the method for manufacturing a display device according to the second embodiment of the present application specifically includes the following steps:
step B201: a first polarizer is formed on a first substrate.
As shown in the structure (a) of fig. 7, a first substrate 101 is provided. The first substrate 101 may include a hard substrate such as a glass substrate. The first polarizer 201 is attached to the surface of the first substrate 101.
Step B202: a common electrode layer is formed on the first polarizer, and the common electrode layer 202 includes a common electrode.
After the first polarizer 201 is formed, a common electrode layer 202 is formed on the first polarizer 201. The common electrode layer 202 is subjected to patterning processing to form a common electrode 2021. The material of the common electrode layer 202 may include ITO.
As shown in the structure (b) of fig. 7, a light shielding layer 209 may be formed on the first polarizer 201 before the common electrode layer 202 is formed. The light shielding layer 209 is patterned to form a plurality of openings 2091. The plurality of openings 2091 are in one-to-one correspondence with the light emitting devices 103 of the display panel 100. A common electrode layer 202 is then formed on the light shielding layer 209, forming a (c) structure as in fig. 7.
Step B203: and turning over the first substrate, and forming a display driving circuit layer on one side of the first substrate far away from the first polarizing layer, wherein the display driving circuit layer comprises a plurality of display scanning lines.
As shown in the structure (d) of fig. 7, after the common electrode layer 202 is formed, the first substrate 101 is turned over, and patterned conductive layers and insulating layers are alternately formed on the side of the first substrate 101 away from the first polarizer 201, thereby forming the display driving circuit layer 102. The display driving circuit layer 102 includes a plurality of display scan lines (not shown).
Step B204: the plurality of light emitting devices are connected to the display driving circuit layer, and the display scanning line is electrically connected to the plurality of light emitting devices.
As shown in the structure (e) of fig. 7, a plurality of light emitting devices 103 are connected to the display driving circuit layer 102 by solder paste or silver paste. The plurality of light emitting devices 103 may be arrayed on the display driving circuit layer 102. The display scan line may electrically connect a plurality of light emitting devices 103 (not shown) located on the same row.
The light emitting device 103 may include a light emitting diode Chip (LED Chip), a sub-millimeter light emitting diode Chip (Mini LED Chip), or a Micro light emitting diode Chip (Micro LED Chip).
Step B205: a flat layer is formed on the plurality of light emitting devices, the flat layer covering the light emitting devices and the display driving circuit layer.
The planarization layer 104 may be formed on the plurality of light emitting devices through a spin coating process, forming the (f) structure as in fig. 7. After forming the flat layer 104, the surface of the flat layer 104 may be subjected to a planarization process by a polishing machine, so that the surface of the flat layer 104 away from the first substrate 101 is a flat surface. The planarization layer 104 covers the light emitting device 103 and the display driving circuit layer 102.
Step B206: and forming a second polarizer on the second substrate.
As in the structure (g) of fig. 8, a second substrate 207 is provided. The second substrate 207 may include a hard substrate such as a glass substrate. A second polarizer 206 is attached to the second substrate 207.
Step B207: and forming a dimming driving circuit layer on the second polaroid, wherein the dimming driving circuit layer comprises a dimming scanning line, a dimming data line and a thin film transistor connected with the dimming scanning line and the dimming data line.
As in the (h) structure of fig. 8, patterned conductive layers and insulating layers are alternately formed on the second polarizer 206, thereby forming the dimming driving circuit layer 205. The dimming driving circuit layer 205 includes a dimming scan line, a dimming data line, and a thin film transistor (not shown) connected to the dimming scan line and the dimming data line.
Step B208: and forming a dimming electrode layer on the dimming driving circuit layer, wherein the dimming electrode layer comprises a plurality of dimming electrodes, and the dimming electrodes are connected with the thin film transistor.
As in the structure (i) of fig. 8, after the dimming driving circuit layer 205 is formed, the dimming electrode layer 204 is formed on the dimming driving circuit layer 205. The dimming electrode layer 204 is patterned to form a dimming electrode 2041. The dimming electrode 2041 is connected to a thin film transistor of the dimming driving circuit layer 205. The material of the dimming electrode layer 204 may include ITO.
It is understood that other conductive structures, such as the common electrode line 2042, may be formed on the dimming driving circuit layer 205 according to the actual requirements of the display device 10.
Step B209: and attaching the first substrate and the second substrate, forming a liquid crystal layer between the first substrate and the second substrate, wherein the liquid crystal layer is positioned between a dimming electrode and a common electrode, and the dimming electrode and the common electrode drive liquid crystal molecules to deflect so as to control the light intensity of the light emitted by at least one light emitting device, and the orthographic projection of the dimming electrode on the first substrate covers the at least one light emitting device.
As in the structure (j) of fig. 8, the structure (f) of fig. 7 and the structure (g) of fig. 8 are aligned. The first substrate 101 and the second substrate 207 are aligned and bonded, and dropping liquid crystal molecules 2031 is formed on the common electrode layer 202 to form the liquid crystal layer 203. After the liquid crystal layer 203 is formed, a frame paste is applied to the edge positions of the common electrode layer 202 and the light adjusting electrode layer 204. The common electrode layer 202 and the dimming electrode layer 204 are connected by a frame sealant 208 to realize sealing of the liquid crystal layer 203.
The display flip-chip film 301 is connected to the display driving circuit layer 102, and the dimming flip-chip film 302 is connected to the dimming electrode layer 204, so as to realize the electrical signal transmission of the display device 10.
It is understood that the frame glue 208 may be applied to the edge positions of the common electrode layer 202 and the dimming electrode layer 204 after the first substrate 101 and the second substrate 207 are aligned and bonded. Then, liquid crystal molecules 2031 are injected into the frame glue 208 to form the liquid crystal layer 203.
It will be appreciated that after the formation of the liquid crystal layer 203 and the frame glue 208, the conductive member may be injected into the frame glue 208 and the liquid crystal layer 203 by a dotting process. The conductive member may comprise a gold ball. The base material of the gold ball is a resin ball, and the surface of the resin ball is coated with a metal material to form the gold ball.
Wherein the conductive element may comprise the first conductive element 2101. The first conductive member 2101 electrically connects the common electrode 2021 and the common electrode line 2042. The common electrode line 2042 provides the electric signal to the common electrode 2021 through the first conductive member 2101, so that the IR Drop phenomenon in the display panel 100 caused by overlong signal lines can be reduced, the stability of the signal of the common electrode 2021 is improved, and the signal of the common electrode 2021 is ensured to be in a stable state.
It is understood that the first conductive element 2101 may be disposed only within the frame glue 208 or only within the liquid crystal layer 203. The first conductive element 2101 of the (j) structure of fig. 5 is exemplified as being disposed in the frame adhesive 208 and in the liquid crystal layer 203, but is not a limitation of the present application.
The display device prepared by the preparation method of the display device comprises a display panel and a liquid crystal dimming panel. The liquid crystal dimming panel comprises a common electrode, a liquid crystal layer and a plurality of dimming electrodes arranged opposite to the common electrode. The front projection of the dimming electrode on the first substrate covers at least one light emitting device on the display panel. The dimming electrode and the common electrode drive the liquid crystal molecules to deflect so as to control the emergent light intensity of at least one light emitting device. The application sets a liquid crystal dimming panel in a display device. When the liquid crystal dimming panel is electrified, an electric field is formed between the common electrode and the dimming electrode of the liquid crystal dimming panel, so that the liquid crystal between the corresponding dimming electrode and the common electrode can be controlled to deflect, and the light emitting intensity of the light emitting device corresponding to the corresponding area of the dimming electrode can be controlled. When the display panel has the phenomenon of uneven display, the liquid crystal dimming panel can be used for adjusting the light output intensity of the light emitting devices of the display panel at different positions, so that the phenomenon of uneven display of the display panel is improved.
In summary, although the detailed description of the embodiments of the present application is given above, the above embodiments are not intended to limit the present application, and those skilled in the art will understand that: the technical scheme described in the foregoing embodiments can be modified or some of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the technical solutions according to the embodiments of the present application.
Claims (7)
1. A display device, comprising:
the display panel comprises a first substrate, a display driving circuit layer and a plurality of light emitting devices, wherein the display driving circuit layer is positioned on one side of the first substrate, the display driving circuit layer comprises a plurality of display scanning lines, the light emitting devices are positioned on one side, far away from the first substrate, of the display driving circuit layer, and the display scanning lines are electrically connected with the light emitting devices;
the liquid crystal dimming panel is positioned on the light emitting side of the display panel and comprises a common electrode, a liquid crystal layer and a plurality of dimming electrodes which are arranged opposite to the common electrode; the front projection of the dimming electrode on the first substrate covers the front projection of at least one light emitting device on the first substrate, and the dimming electrode and the common electrode drive the deflection of liquid crystal molecules in the liquid crystal layer so as to control the light emitting intensity of at least one light emitting device;
the liquid crystal dimming panel further includes:
the first polaroid is positioned on the light emitting side of the display panel, and a common electrode layer is arranged on one side of the first polaroid, which is far away from the display panel, and comprises the common electrode;
The second substrate and the first polaroid are oppositely arranged at one side of the liquid crystal dimming panel far away from the display panel, and a dimming electrode layer is arranged at one side of the second substrate close to the liquid crystal layer;
the dimming electrode layer also comprises a plurality of common electrode wires which are arranged on one side of the second substrate close to the liquid crystal layer,
the liquid crystal dimming panel further comprises a first conductive piece, wherein the first conductive piece is electrically connected with the common electrode wire and the common electrode;
the display device comprises at least one public electrode line, a plurality of first conductive parts and a plurality of second conductive parts, wherein the plurality of first conductive parts are arranged on the public electrode line and are positioned in a display area of the display device, and the plurality of first conductive parts are uniformly distributed in the extending direction of the public electrode line;
the common electrode layer further includes a connection terminal; the liquid crystal dimming panel further comprises a second conductive piece, wherein the second conductive piece is positioned between the connecting terminal and the auxiliary electrode to electrically connect the connecting terminal and the auxiliary electrode, a via hole is formed in the first polarizer, and the connecting terminal is electrically connected to the display scanning line through the via hole;
The second conductive pieces are corresponding to the second conductive pieces on at least one display scanning line and are uniformly distributed in the extending direction of the display scanning line.
2. The display device of claim 1, wherein the display device comprises a display device,
a dimming driving circuit layer is arranged on one side, close to the liquid crystal layer, of the second substrate, the dimming driving circuit layer comprises a dimming scanning line, a dimming data line and a thin film transistor connected with the dimming scanning line and the dimming data line, the dimming electrode layer comprises a plurality of dimming electrodes, and the dimming electrodes are connected with the thin film transistor;
the liquid crystal dimming panel further includes:
the second polaroid is positioned on one side of the second substrate far away from the liquid crystal layer;
and the frame glue is positioned between the second substrate and the display panel to seal the liquid crystal layer.
3. The display device according to claim 1, wherein the liquid crystal dimming panel further comprises a light shielding layer, the light shielding layer is provided with a plurality of openings, the openings are arranged corresponding to the light emitting devices, and the openings expose the light emitting devices;
the liquid crystal layer also comprises a plurality of conductive pieces, and the orthographic projection of the conductive pieces on the display panel is positioned in the orthographic projection range of the shading layer on the display panel.
4. The display apparatus according to claim 1, wherein the display panel further comprises a flat layer covering the light emitting device and the display driving circuit layer, and the liquid crystal dimming panel is connected to the flat layer.
5. The display device according to claim 1, wherein the liquid crystal dimming panel is connected to the first substrate.
6. A method of manufacturing a display device, comprising:
forming a display driving circuit layer on a first substrate, the display driving circuit layer including a plurality of display scan lines;
connecting a plurality of light emitting devices with the display driving circuit layer, the display scanning line electrically connecting the plurality of light emitting devices;
forming a planarization layer on the plurality of light emitting devices, the planarization layer covering the light emitting devices and the display driving circuit layer;
forming a first polarizer on the flat layer;
forming a common electrode layer on the first polarizer, the common electrode layer including a common electrode and a connection terminal;
forming a second polarizer on a second substrate;
forming a dimming driving circuit layer on the second polaroid, wherein the dimming driving circuit layer comprises a dimming scanning line, a dimming data line and a thin film transistor connected with the dimming scanning line and the dimming data line;
Forming a dimming electrode layer on the dimming driving circuit layer, wherein the dimming electrode layer comprises a plurality of dimming electrodes, and the dimming electrodes are connected with the thin film transistor; forming a common electrode line or an auxiliary electrode on the dimming driving circuit layer;
attaching the first substrate and the second substrate, forming a liquid crystal layer between the first substrate and the second substrate, wherein the liquid crystal layer is positioned between the dimming electrode and the public electrode, the dimming electrode and the public electrode drive liquid crystal molecules to deflect so as to control the emergent light intensity of at least one light emitting device, and the orthographic projection of the dimming electrode on the first substrate covers at least one light emitting device;
the common electrode layer and the dimming electrode layer are connected through frame glue;
forming a liquid crystal layer in the frame glue, wherein the dimming electrode and the common electrode drive liquid crystal to deflect so as to control the emergent light intensity of at least one light emitting device, and the orthographic projection of the dimming electrode on the first substrate covers at least one light emitting device;
injecting conductive pieces into the frame glue and the liquid crystal layer through a dotting process, wherein the conductive pieces comprise a first conductive piece and a second conductive piece;
The first conductive member is electrically connected to the common electrode line and the common electrode; the display device comprises at least one public electrode line, a plurality of first conductive parts and a plurality of second conductive parts, wherein the plurality of first conductive parts are arranged on the public electrode line and are positioned in a display area of the display device, and the plurality of first conductive parts are uniformly distributed in the extending direction of the public electrode line;
the second conductive piece is positioned between the connecting terminal and the auxiliary electrode to electrically connect the connecting terminal and the auxiliary electrode, a via hole is formed in the first polarizer, and the connecting terminal is electrically connected to the display scanning line through the via hole; the second conductive pieces are corresponding to the second conductive pieces on at least one display scanning line and are uniformly distributed in the extending direction of the display scanning line.
7. A method of manufacturing a display device, comprising:
forming a first polarizer on a first substrate;
forming a common electrode layer on the first polarizer, the common electrode layer including a common electrode;
turning over the first substrate, and forming a display driving circuit layer on one side of the first substrate far away from the first polaroid, wherein the display driving circuit layer comprises a plurality of display scanning lines;
Connecting a plurality of light emitting devices with the display driving circuit layer, the display scanning line electrically connecting the plurality of light emitting devices;
forming a planarization layer on the plurality of light emitting devices, the planarization layer covering the light emitting devices and the display driving circuit layer;
forming a second polarizer on a second substrate;
forming a dimming driving circuit layer on the second polaroid, wherein the dimming driving circuit layer comprises a dimming scanning line, a dimming data line and a thin film transistor connected with the dimming scanning line and the dimming data line;
forming a dimming electrode layer on the dimming driving circuit layer, wherein the dimming electrode layer comprises a plurality of dimming electrodes, the dimming electrodes are connected with the thin film transistors, and a common electrode line is formed on the dimming driving circuit layer;
attaching the first substrate and the second substrate, forming a liquid crystal layer between the first substrate and the second substrate, wherein the liquid crystal layer is positioned between the dimming electrode and the public electrode, the dimming electrode and the public electrode drive liquid crystal molecules to deflect so as to control the emergent light intensity of at least one light emitting device, and the orthographic projection of the dimming electrode on the first substrate covers at least one light emitting device;
The common electrode layer and the dimming electrode layer are connected through frame glue;
forming a liquid crystal layer in the frame glue, wherein the dimming electrode and the common electrode drive liquid crystal to deflect so as to control the emergent light intensity of at least one light emitting device, and the orthographic projection of the dimming electrode on the first substrate covers at least one light emitting device;
injecting a conductive piece into the frame glue and the liquid crystal layer through a dotting process, wherein the conductive piece comprises a first conductive piece;
the first conductive member is electrically connected to the common electrode line and the common electrode; at least one public electrode line is provided with a plurality of first conductive pieces, the first conductive pieces are positioned in a display area of the display device, and the first conductive pieces are uniformly distributed in the extending direction of the public electrode line.
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| US20240313173A1 (en) * | 2022-02-28 | 2024-09-19 | BOE MLED Technology Co., Ltd. | Display baseplates, encapsulation baseplates and display apparatuses |
| CN114824042B (en) * | 2022-03-08 | 2024-06-14 | 上海天马微电子有限公司 | Display panel and display device |
| CN115206201B (en) * | 2022-07-20 | 2023-11-10 | 厦门天马微电子有限公司 | Display panel, preparation method thereof and display device |
| CN115951525B (en) * | 2023-03-02 | 2023-05-26 | 惠科股份有限公司 | Display panel and display device |
| CN117031830B (en) * | 2023-09-08 | 2024-09-20 | 惠科股份有限公司 | Liquid crystal display unit and liquid crystal display module |
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