CN112528933B - Flexible circuit board, display device and manufacturing method thereof - Google Patents
Flexible circuit board, display device and manufacturing method thereof Download PDFInfo
- Publication number
- CN112528933B CN112528933B CN202011527104.XA CN202011527104A CN112528933B CN 112528933 B CN112528933 B CN 112528933B CN 202011527104 A CN202011527104 A CN 202011527104A CN 112528933 B CN112528933 B CN 112528933B
- Authority
- CN
- China
- Prior art keywords
- fingerprint identification
- electrostatic
- circuit
- collecting
- identification area
- 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.)
- Active
Links
Images
Classifications
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
- G06V40/00—Recognition of biometric, human-related or animal-related patterns in image or video data
- G06V40/10—Human or animal bodies, e.g. vehicle occupants or pedestrians; Body parts, e.g. hands
- G06V40/12—Fingerprints or palmprints
- G06V40/13—Sensors therefor
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K1/00—Printed circuits
- H05K1/02—Details
- H05K1/0277—Bendability or stretchability details
- H05K1/028—Bending or folding regions of flexible printed circuits
Abstract
The invention provides a flexible circuit board, a display device and a manufacturing method thereof, wherein a circuit area on the flexible circuit board and a fingerprint identification area of a display panel are correspondingly arranged, then an electrostatic voltage value at the corresponding fingerprint identification area is acquired through an electrostatic acquisition circuit, then an electrostatic field at the corresponding fingerprint identification area is adjusted through a voltage compensation circuit according to the electrostatic voltage value, namely the electrostatic field at the fingerprint identification area is neutralized through a reverse polarity electric field by the voltage compensation circuit, the influence of the electrostatic on a pixel circuit at the fingerprint identification area is reduced, the driving current generated by the pixel circuit is ensured to be normal, the abnormal display condition of the display panel at the fingerprint identification area is further improved, and the display effect of the display device is improved.
Description
Technical Field
The invention relates to the technical field of display, in particular to a flexible circuit board, a display device and a manufacturing method of the flexible circuit board.
Background
With the rapid development of display technologies, display devices have been gradually improved in terms of appearance requirements, in addition to the functions of traditional information display, and the larger screen occupation ratio is the trend of the future display device market, so that the underscreen fingerprint identification technology is favored by consumers and researchers. In order to realize fingerprint identification function under the screen, need set up the fingerprint identification module in the fingerprint identification region that display panel deviates from its display surface one side usually. And deviate from the in-process that its display surface one side set up the fingerprint identification module at display panel, accumulate static in the fingerprint identification region easily, and then cause the drive current that the regional pixel circuit of fingerprint identification produced unusual, lead to display panel at the regional demonstration of fingerprint identification unusual, like the luminance condition such as on the high side, on the low side.
Disclosure of Invention
In view of this, the present invention provides a flexible circuit board, a display device and a manufacturing method thereof, which effectively solve the technical problems existing in the prior art, improve the abnormal display condition of the display panel in the fingerprint identification area, and improve the display effect of the display device.
In order to achieve the purpose, the technical scheme provided by the invention is as follows:
the utility model provides a flexible line way board, flexible line way board is used for connecting display panel and control mainboard, display panel is including deviating from the fingerprint identification region of its display surface one side, flexible line way board includes:
the circuit area corresponds to the fingerprint identification area and comprises an electrostatic acquisition circuit and a voltage compensation circuit, and the electrostatic acquisition circuit is used for acquiring an electrostatic voltage value of a position of the electrostatic acquisition circuit corresponding to the fingerprint identification area; and the voltage compensation circuit is used for adjusting the electrostatic field of the position of the voltage compensation circuit corresponding to the fingerprint identification area according to the electrostatic voltage value.
Optionally, the static electricity collecting line includes at least one static electricity collecting electrode plate arranged in a distributed manner, and the voltage compensating line includes at least one voltage compensating electrode plate;
the static collecting polar plate and the voltage compensation polar plate are arranged in one-to-one correspondence and adjacent mode, and the static collecting polar plate is used for collecting sub-static voltage values of positions of the static collecting polar plate corresponding to the fingerprint identification area; the voltage compensation polar plate is used for adjusting the electrostatic field at the position corresponding to the fingerprint identification area according to the sub-electrostatic voltage value acquired by the electrostatic acquisition polar plate adjacent to the voltage compensation polar plate.
Optionally, the electrostatic collecting pole plate and the voltage compensating pole plate are arranged on the same layer, wherein the electrostatic collecting circuit further includes at least one first shielding ring, the first shielding ring corresponds to the electrostatic collecting pole plate one by one, and the first shielding ring surrounds the electrostatic collecting pole plate.
Optionally, the static electricity collecting polar plate and the voltage compensating polar plate are arranged on the same layer, wherein the static electricity collecting circuit further includes at least one second shielding ring, the second shielding ring corresponds to the voltage compensating polar plate one to one, and the second shielding ring is arranged around the voltage compensating polar plate.
Optionally, the display panel includes a plurality of sub-pixels corresponding to the fingerprint identification area, the static electricity collection circuit includes a plurality of static electricity collection plates, and the voltage compensation circuit includes a plurality of voltage compensation plates;
the electrostatic collecting polar plate and the voltage compensation polar plate which are arranged adjacently are respectively and correspondingly arranged at the two adjacent sub-pixels corresponding to the fingerprint identification area.
Optionally, the sub-pixels include anodes, and the electrostatic collecting electrode plate and the voltage compensating electrode plate which are adjacently disposed are respectively disposed corresponding to the anodes of two adjacent sub-pixels corresponding to the fingerprint identification area;
in the correspondingly arranged anode and the static collecting polar plate, the orthographic projection of the anode on the surface of the fingerprint identification area covers the orthographic projection of the static collecting polar plate on the surface of the fingerprint identification area;
and in the correspondingly arranged anode and the voltage compensation polar plate, the orthographic projection of the anode on the surface of the fingerprint identification area covers the orthographic projection of the voltage compensation polar plate on the surface of the fingerprint identification area.
Optionally, the circuit area further includes a fingerprint identification module.
Optionally, the fingerprint identification module is disposed at a gap between the distribution structures of the static electricity collection line and the voltage compensation line;
or, when the flexible circuit board and the display panel are correspondingly arranged, the fingerprint identification module is arranged on the static electricity collection circuit and the voltage compensation circuit deviates from one side of the display panel.
Optionally, any one of the electrostatic collecting circuit, the voltage compensating circuit and the fingerprint identification module is electrically connected to the driving IC of the display panel or the control main board.
Correspondingly, the invention further provides a display device which comprises the flexible circuit board.
Correspondingly, the invention also provides a preparation method of the display device, which comprises the following steps:
providing a display panel and a flexible circuit board, wherein the display panel comprises a fingerprint identification area deviating from one side of the display surface of the display panel, and the flexible circuit board is the flexible circuit board;
a protective film is attached to one side of the display panel, which is far away from the display surface of the display panel, and the protective film is hollow corresponding to the fingerprint identification area;
and aligning and fixing the circuit area of the flexible circuit board with the fingerprint identification area.
Compared with the prior art, the technical scheme provided by the invention at least has the following advantages:
the invention provides a flexible circuit board, a display device and a manufacturing method thereof, wherein the flexible circuit board is used for connecting a display panel and a control main board, the display panel comprises a fingerprint identification area deviating from one side of the display surface of the display panel, and the flexible circuit board comprises: the circuit area corresponds to the fingerprint identification area and comprises an electrostatic acquisition circuit and a voltage compensation circuit, and the electrostatic acquisition circuit is used for acquiring an electrostatic voltage value of a position of the electrostatic acquisition circuit corresponding to the fingerprint identification area; and the voltage compensation circuit is used for adjusting the electrostatic field corresponding to the position of the fingerprint identification area according to the electrostatic voltage value.
According to the technical scheme provided by the invention, the circuit area on the flexible circuit board and the fingerprint identification area of the display panel are correspondingly arranged, the electrostatic voltage value of the corresponding fingerprint identification area is acquired through the electrostatic acquisition circuit, and then the electrostatic field of the corresponding fingerprint identification area is adjusted through the voltage compensation circuit according to the electrostatic voltage value, namely the electrostatic field of the fingerprint identification area is neutralized through the reverse polarity electric field by the voltage compensation circuit, so that the influence of the electrostatic on the pixel circuit of the fingerprint identification area is reduced, the driving current generated by the pixel circuit is ensured to be normal, the abnormal display condition of the display panel in the fingerprint identification area is improved, and the display effect of the display device is improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a display device according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a circuit area according to an embodiment of the present invention;
FIG. 3 is a cross-sectional view along AA' of FIG. 2;
fig. 4 is a schematic structural diagram of another circuit area according to an embodiment of the present invention;
FIG. 5 is a cross-sectional view taken along direction BB' in FIG. 4;
fig. 6 is a schematic structural diagram of another circuit area according to an embodiment of the present invention;
FIG. 7 is a sectional view taken along the direction CC' in FIG. 6;
fig. 8 is a schematic structural diagram of another circuit area according to an embodiment of the present invention;
fig. 9 is a schematic structural diagram of another circuit area according to an embodiment of the present invention;
fig. 10 is a schematic structural diagram of another display device according to an embodiment of the disclosure;
fig. 11 is a schematic structural diagram of another circuit area according to an embodiment of the present invention;
fig. 12 is a schematic structural diagram of another display device according to an embodiment of the disclosure;
fig. 13 is a schematic structural diagram of another display device according to an embodiment of the invention;
fig. 14 is a flowchart of a method for manufacturing a display device according to an embodiment of the invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Just as the background art states, in order to realize fingerprint identification function under the screen, need set up the fingerprint identification module in the fingerprint identification region that display panel deviates from its display surface one side usually. And deviate from the in-process that its display surface one side set up the fingerprint identification module at display panel, accumulate static in the fingerprint identification region easily, and then cause the drive current that the regional pixel circuit of fingerprint identification produced unusual, lead to display panel in the regional demonstration of fingerprint identification unusual, like the luminance condition such as on the high side, on the low side.
Specifically, before the fingerprint identification module is arranged, a protective film is required to be attached to one side of the display panel, which is far away from the display surface of the display panel, an opening of a fingerprint identification area is reserved in the protective film, and then a black shading tape is required to be attached to the identification area; because protection film and black shading sticky tape all have static, also can produce static when tearing off black shading sticky tape (in order to set up the fingerprint identification module in the fingerprint identification region) moreover, and the regional static of department of fingerprint identification exists always, and then causes the influence to the pixel circuit in this region for the drive current that pixel circuit produced is unusual.
Therefore, the embodiment of the invention provides a flexible circuit board, a display device and a manufacturing method thereof, which effectively solve the technical problems in the prior art, improve the abnormal display condition of a display panel in a fingerprint identification area and improve the display effect of the display device.
To achieve the above object, the technical solutions provided by the embodiments of the present invention are described in detail below, specifically with reference to fig. 1 to 14.
Referring to fig. 1, which is a schematic structural diagram of a display device according to an embodiment of the present invention, the display device according to the embodiment of the present invention includes a flexible circuit board 100, a display panel 200, and a control main board 300, where the flexible circuit board 100 is used to connect the display panel 200 and the control main board 300, the display panel 200 includes a fingerprint identification area 210 on a side away from a display surface of the display panel, and the flexible circuit board 100 includes:
the circuit area 110 corresponds to the fingerprint identification area 210, the circuit area 110 comprises an electrostatic collecting circuit 111 and a voltage compensating circuit 112, and the electrostatic collecting circuit 111 is used for collecting electrostatic voltage values of positions corresponding to the fingerprint identification area 210; and the voltage compensation circuit 112 is used for adjusting the electrostatic field corresponding to the position of the fingerprint identification area 210 according to the electrostatic voltage value.
In the working process of the display device provided by the embodiment of the invention, the electrostatic voltage value of the corresponding fingerprint identification area is acquired through the electrostatic acquisition circuit. And analyzing and calculating a deviation value of the display brightness of the fingerprint identification area and other areas according to the electrostatic voltage value, and giving a corresponding compensation voltage according to the deviation value. The compensation voltage is transmitted to the voltage compensation circuit, the voltage compensation circuit receives the compensation voltage to form a reverse polarity electric field of the electrostatic field at the current fingerprint identification area, and then the electrostatic field at the current fingerprint identification area is neutralized through the reverse polarity electric field, so that the influence of the electrostatic on the pixel circuit at the fingerprint identification area is reduced, and the purpose of compensating the display brightness of the fingerprint identification area is achieved.
In an embodiment of the present invention, the compensation voltage provided by the present invention can be obtained by analyzing and calculating a driving chip of the display panel, that is, the static electricity collecting circuit sends the compensation voltage to the driving chip of the display panel, and the driving chip sends the compensation voltage obtained by analyzing and calculating the compensation voltage to the voltage compensation circuit. Or the compensation voltage provided by the embodiment of the invention can be obtained by analyzing and calculating the compensation voltage through the control mainboard, namely, the compensation voltage is sent to the control mainboard by the static electricity acquisition circuit, and the compensation voltage is sent to the voltage compensation circuit after being obtained by analyzing and calculating the control mainboard. Or, the compensation voltage may be obtained by analyzing and calculating by a control chip that is independent from both the driving chip and the control motherboard, and the present invention is not particularly limited.
It can be understood that, according to the technical scheme provided by the embodiment of the present invention, the circuit area on the flexible circuit board and the fingerprint identification area of the display panel are correspondingly arranged, and then the electrostatic voltage value at the corresponding fingerprint identification area is acquired through the electrostatic acquisition circuit, and then the electrostatic field at the corresponding fingerprint identification area is adjusted according to the electrostatic voltage value through the voltage compensation circuit, that is, the electrostatic field at the fingerprint identification area is neutralized by the voltage compensation circuit through the reversed polarity electric field, so that the influence of the electrostatic on the pixel circuit at the fingerprint identification area is reduced, the driving current generated by the pixel circuit is ensured to be normal, the abnormal display condition of the display panel at the fingerprint identification area is improved, and the display effect of the display device is improved.
Referring to fig. 2, a schematic structural diagram of a circuit area according to an embodiment of the present invention is shown, where, in the circuit area 110 according to the embodiment of the present invention, the static electricity collecting line includes at least one static electricity collecting plate 1110 distributed, and the voltage compensating line includes at least one voltage compensating plate 1120.
The electrostatic collecting polar plate 1110 and the voltage compensating polar plate 1120 are arranged in a one-to-one correspondence and adjacent manner, and the electrostatic collecting polar plate 1110 is used for collecting sub-electrostatic voltage values of positions of the electrostatic collecting polar plate 1110 corresponding to the fingerprint identification region; the voltage compensation plate 1120 is configured to adjust the electrostatic field corresponding to the position of the fingerprint identification area according to the sub-electrostatic voltage value collected by the electrostatic collecting plate 1110 adjacent to the voltage compensation plate 1120.
It can be understood that the electrostatic collecting circuit provided by the embodiment of the present invention may include at least one electrostatic collecting plate, and the voltage compensating circuit includes at least one voltage compensating plate, where the electrostatic collecting plate and the voltage compensating plate are adjacently disposed in a one-to-one correspondence, so that the electrostatic field at the corresponding position of the fingerprint identification area can be adjusted through the cooperation of the adjacent electrostatic collecting plate and the voltage compensating plate. According to the embodiment of the invention, different electrostatic field adjustments can be carried out on different positions of the fingerprint identification area by optimally setting more electrostatic collecting polar plates and voltage compensating polar plates, and further the display effect of the display device is further improved by pertinently adjusting the electrostatic fields of different positions of the fingerprint identification area.
In an embodiment of the present invention, the electrostatic collecting plate and the voltage collecting plate provided by the present invention may be arranged in different layers. As shown in fig. 3, which is a cross-sectional view along direction AA' of fig. 2, the electrostatic collecting plate 1110 and the voltage compensating plate 1120 are arranged in different layers, and an insulating layer is disposed between the layer of the electrostatic collecting plate 1110 and the layer of the voltage compensating plate 1120.
Or, the electrostatic collecting pole plate and the voltage compensating pole plate provided by the embodiment of the invention can also be arranged in the same layer, and in order to avoid the voltage compensating pole plate from interfering with the electrostatic collecting pole plate and the adjacent electrostatic collecting pole plates from interfering with each other, the electrostatic collecting pole plate provided by the embodiment of the invention can also be surrounded by the shielding ring. Referring to fig. 4 and 5, fig. 4 is a schematic structural diagram of another circuit region according to an embodiment of the present invention, and fig. 5 is a cross-sectional view of the circuit region in the BB' direction of fig. 4, the electrostatic collecting plate 1110 and the voltage compensating plate 1120 provided in the embodiment of the present invention are disposed in the same layer, wherein the electrostatic collecting circuit further includes at least one first shielding ring 1111, the first shielding rings 1111 correspond to the electrostatic collecting plate 1110 one by one, and the first shielding ring 1111 is disposed around the electrostatic collecting plate 1110.
It can be understood that the first shielding ring is arranged outside the electrostatic collecting pole plate to surround, so that the electric signal interference caused by the adjacent voltage compensation pole plate can be shielded by the first shielding ring, the accuracy of the sub-electrostatic voltage value collected by the electrostatic collecting pole plate is improved, and the high precision of the voltage compensation pole plate in adjusting the electrostatic field of the fingerprint identification area is ensured.
And when the electrostatic collecting polar plate and the voltage compensation polar plate provided by the embodiment of the invention are arranged on the same layer, and in order to avoid interference of the electrostatic collecting polar plate on the voltage compensation polar plate and interference between adjacent voltage compensation polar plates, the voltage compensation polar plate provided by the embodiment of the invention can also be surrounded by the shielding ring. Referring to fig. 6 and 7, fig. 6 is a schematic structural diagram of another circuit area provided in an embodiment of the present invention, and fig. 7 is a cross-sectional view in a CC' direction in fig. 6, the electrostatic collection pad 1110 and the voltage compensation pad 1120 provided in the embodiment of the present invention are disposed in the same layer, where the electrostatic collection circuit further includes at least one second shielding ring 1121, the second shielding rings 1121 are in one-to-one correspondence with the voltage compensation pads 1120, and the second shielding rings 1121 are disposed around the voltage compensation pads 1120.
It can be understood that in the embodiment of the present invention, the second shielding ring is disposed outside the voltage compensation plate for surrounding, so that the second shielding ring can shield the electric signal interference caused by the adjacent electrostatic collecting plate, and the precision of the voltage compensation plate in adjusting the electrostatic field in the fingerprint identification area is improved.
Further, when the electrostatic collecting polar plate and the voltage compensation polar plate provided by the embodiment of the invention are arranged on the same layer, a first shielding ring can be arranged outside the electrostatic collecting polar plate, and a second shielding ring can be arranged outside the voltage collecting polar plate. As shown in fig. 8, a schematic structural diagram of another circuit area provided in the embodiment of the present invention is shown, wherein the electrostatic collecting plate 1110 and the voltage compensating plate 1120 provided in the embodiment of the present invention are disposed in the same layer, the electrostatic collecting circuit further includes at least one first shielding ring 1111, the first shielding rings 1111 correspond to the electrostatic collecting plate 1110 one to one, and the first shielding rings 1111 are disposed around the electrostatic collecting plate 1110; the electrostatic collecting circuit further includes at least one second shielding ring 1121, the second shielding ring 1121 corresponds to the voltage compensation electrode plate 1120 one by one, and the second shielding ring 1121 is disposed around the voltage compensation electrode plate 1120. The adjacent first shielding rings 1111, the adjacent second shielding rings 1121, and the adjacent first shielding rings 1111 and the adjacent second shielding rings 1121 provided by the embodiment of the present invention may be in contact with each other to form a mesh shielding structure, and the electrostatic collecting electrode plate 1110 and the voltage compensation electrode plate 1120 are located in each mesh of the mesh shielding structure. The grid shielding structure is connected with a grounding end GND to form an absolute zero potential surface.
In an embodiment of the present invention, the electrostatic collecting electrode and the voltage compensating electrode provided in the embodiment of the present invention may be made of P-Si, molybdenum, metal oxide, and the like, and the present invention is not limited in particular. The first shielding ring and the second shielding ring provided by the invention can be made of low-resistance conductive materials, particularly P-Si, Mg, Ag and the like, and the shielding rings form closed rings around the corresponding polar plates. The first shielding ring and the second shielding ring provided by the embodiment of the invention are connected with the grounding end to form an absolute zero potential surface, so that the electric signal interference between adjacent polar plates is prevented.
Referring to fig. 9, a schematic structural diagram of another circuit area according to an embodiment of the present invention is shown, in which the electrostatic collecting plate 1110 according to an embodiment of the present invention is led out through the electrostatic collecting lead 1112, and the voltage compensating plate 1120 is led out through the voltage compensating lead 1122. The static electricity collecting lead 1112 and the static electricity collecting polar plate 1110 provided by the embodiment of the invention can be arranged in different layers, and the static electricity collecting lead 1112 and the static electricity collecting polar plate 1110 are electrically connected through a first through hole 1113; the voltage compensation lead 1122 and the voltage compensation plate 1120 can also be arranged in different layers, and the voltage compensation lead 1122 and the voltage compensation plate 1120 are electrically connected through the second through hole 1123, so that the influence of various leads on the layout of the plates can be avoided.
It should be noted that, in other embodiments of the present invention, the electrostatic collecting lead and the electrostatic collecting pole plate may be disposed in the same layer, and the voltage collecting pole plate and the voltage collecting lead may be disposed in the same layer.
The distribution and arrangement of the electrostatic collecting polar plate and the voltage compensation polar plate are not particularly limited in the embodiment of the invention. Optionally, the adjacent electrostatic collecting electrode plate and the voltage compensation electrode plate provided by the embodiment of the present invention may be disposed corresponding to the adjacent sub-pixels in the fingerprint identification area. That is, the display panel provided by the embodiment of the present invention includes a plurality of sub-pixels corresponding to the fingerprint identification area, the static electricity collection circuit includes a plurality of static electricity collection plates, and the voltage compensation circuit includes a plurality of voltage compensation plates; the electrostatic collecting polar plate and the voltage compensation polar plate which are adjacently arranged are correspondingly arranged at two adjacent sub-pixels corresponding to the fingerprint identification area respectively.
It can be understood that the sub-pixels of the display panel provided by the embodiment of the invention include the driving circuit, and then the adjacent electrostatic collecting polar plate and the voltage compensating polar plate are arranged corresponding to the adjacent sub-pixels at the fingerprint identification area, so that the corresponding static electricity at the position of the driving circuit can be collected more specifically, the electrostatic field at the position of the driving circuit can be adjusted specifically, the abnormal display condition at the fingerprint identification area can be further improved, and the display effect of the display device can be improved.
Referring to fig. 10, a schematic structural diagram of another display device according to an embodiment of the present invention is shown, where the display panel according to the embodiment of the present invention includes a plurality of sub-pixels 201, and the sub-pixels 201 include anodes 2011, and the electrostatic collecting plate 1110 and the voltage compensating plate 1120 that are adjacently disposed are respectively disposed corresponding to the anodes 2011 of two adjacent sub-pixels 201 corresponding to the fingerprint identification region; in the anode 2011 and the electrostatic collecting pad 1110, among the anode 2011 and the electrostatic collecting pad 1110, an orthographic projection of the anode 2011 on a face where the fingerprint identification area is located covers an orthographic projection of the electrostatic collecting pad 1110 on the face where the fingerprint identification area is located.
And, in the anode 2011 and the voltage compensation pad 1120 which are correspondingly arranged, the orthographic projection of the anode 2011 on the surface where the fingerprint identification area is located covers the orthographic projection of the voltage compensation pad 1120 on the surface where the fingerprint identification area is located.
It should be noted that the display panel provided in the embodiment of the present invention includes a substrate, a transistor array layer located on one side of the substrate, an anode located on one side of the transistor array layer away from the substrate, a pixel defining layer located on one side of the anode away from the substrate, a light emitting layer located in an opening of the pixel defining layer corresponding to the anode, a cathode located on one side of the light emitting layer away from the substrate, and a package structure located on one side of the cathode away from the substrate, which are the same as those in the prior art, and therefore, redundant description is not repeated in the present invention.
It can be understood that the adjacent electrostatic collecting polar plate and the voltage compensating polar plate provided by the embodiment of the invention are arranged corresponding to the adjacent sub-pixels at the fingerprint identification area, so that the corresponding static electricity at the position of the driving circuit can be collected more pertinently, and the electrostatic field at the position of the driving circuit can be adjusted pertinently. Meanwhile, the size of the electrostatic collecting polar plate and the size of the voltage compensating polar plate provided by the embodiment of the invention are not larger than the size of the corresponding anode, and the electrostatic collecting polar plate and the voltage compensating polar plate are both in the coverage range of the corresponding anode, so that the condition that the electrostatic collecting polar plate and the voltage compensating polar plate shield the transmission light between the adjacent sub-pixels can be avoided, the external light can be transmitted to the side of the display panel deviating from the display surface of the display panel through the adjacent sub-pixels, and the fingerprint identification module in the fingerprint identification area can normally receive the light to carry out fingerprint identification.
In an embodiment of the present invention, the flexible printed circuit provided by the present invention may further be integrated with a fingerprint identification module, that is, the circuit area provided by the present invention further includes a fingerprint identification module. Referring to fig. 11, a schematic structural diagram of another circuit area provided in an embodiment of the present invention is shown, where the circuit area provided in the embodiment of the present invention further includes a fingerprint identification module 113, and the fingerprint identification module 113 provided in the present invention is disposed at a gap between distribution structures of the electrostatic collecting circuit and the voltage compensating circuit. As shown in fig. 12, the static electricity collecting circuit provided by the embodiment of the invention includes a plurality of static electricity collecting plates 1110, and the voltage compensating circuit includes a plurality of voltage compensating plates 1120, wherein the fingerprint identification module 113 may be disposed at the adjacent static electricity collecting plates 1110, the adjacent voltage compensating plates 1120, and the gaps between the adjacent static electricity collecting plates 1110 and the voltage compensating plates 1120.
It can be understood that the fingerprint identification module provided by the embodiment of the invention is arranged at the gap between the static electricity acquisition line and the distribution structure of the voltage compensation line, and the fingerprint information is acquired through the gap between the static electricity acquisition line and the distribution structure of the voltage compensation line. Optionally, the electrostatic collecting circuit, the voltage compensating circuit and the fingerprint identifying module provided by the embodiment of the invention may be located on the same layer or different layers of the circuit area, and the invention is not particularly limited, and only the requirement that fingerprint information can be collected between the fingerprint identifying module and the display panel is met; when the fingerprint identification module is the optics fingerprint identification module, fingerprint identification module can the printing opacity between to the display panel to guarantee fingerprint identification module collection fingerprint information.
Or referring to fig. 12, which is a schematic structural diagram of another display device according to an embodiment of the present invention, the circuit area provided in the embodiment of the present invention further includes a fingerprint identification module 113, and when the flexible circuit board 100 provided in the embodiment of the present invention is disposed corresponding to the display panel 200, the fingerprint identification module 113 is disposed on a side of the static electricity collecting circuit 111 and the voltage compensating circuit 112 away from the display panel 200.
It should be noted that, when the circuit area provided by the embodiment of the present invention includes the fingerprint identification module, the relationship between the layers of the fingerprint identification module located in the circuit area is not specifically limited, and the specific design is required according to the actual application. The fingerprint identification module provided by the embodiment of the invention can be an optical fingerprint identification module and can also be a sound wave fingerprint identification module, and the invention is not limited in particular.
In an embodiment of the present invention, any one of the electrostatic collecting circuit, the voltage compensating circuit, and the fingerprint identifying module provided in the present invention is electrically connected to the driving IC of the display panel or the control motherboard, and further connected to the driving IC or the control motherboard, so as to achieve a purpose of signal interaction between the electrostatic collecting circuit, the voltage compensating circuit, and the fingerprint identifying module.
Correspondingly, the embodiment of the invention also provides a display device, and the display device comprises the flexible circuit board provided by any one of the embodiments.
Fig. 13 is a schematic structural diagram of another display device according to an embodiment of the present invention, where the display device 1000 according to the embodiment of the present invention may be a mobile terminal.
Accordingly, an embodiment of the present invention further provides a method for manufacturing a display device, as shown in fig. 14, which is a flowchart of a method for manufacturing a display device provided in an embodiment of the present invention, where the method for manufacturing a display device provided in an embodiment of the present invention includes:
s1, providing a display panel and a flexible circuit board, wherein the display panel comprises a fingerprint identification area which is deviated from one side of the display panel, and the flexible circuit board is provided by any one of the embodiments.
S2, attaching a protective film to one side, deviating from the display surface, of the display panel, wherein the protective film corresponds to the fingerprint identification area and is hollow.
And S3, aligning and fixing the circuit area of the flexible circuit board with the fingerprint identification area.
It can be understood that the preparation method of the display device provided by the embodiment of the invention only needs to attach the protective film on the side of the display panel, which is far away from the display surface of the display panel, and does not need to attach the black shading tape to the fingerprint identification area, so that the electrostatic influence caused by attaching and tearing off the black shading tape in the preparation process can be reduced, and the preparation cost is reduced.
The embodiment of the invention provides a flexible circuit board, a display device and a manufacturing method thereof, wherein the flexible circuit board is used for connecting a display panel and a control main board, the display panel comprises a fingerprint identification area deviating from one side of the display panel, and the flexible circuit board comprises: the circuit area corresponds to the fingerprint identification area and comprises an electrostatic acquisition circuit and a voltage compensation circuit, and the electrostatic acquisition circuit is used for acquiring an electrostatic voltage value of a position of the electrostatic acquisition circuit corresponding to the fingerprint identification area; and the voltage compensation circuit is used for adjusting the electrostatic field of the position of the voltage compensation circuit corresponding to the fingerprint identification area according to the electrostatic voltage value.
As can be seen from the above, in the technical scheme provided in the embodiment of the present invention, the circuit area on the flexible circuit board and the fingerprint identification area of the display panel are correspondingly arranged, and then the electrostatic voltage value at the corresponding fingerprint identification area is acquired through the electrostatic acquisition circuit, and then the electrostatic field at the corresponding fingerprint identification area is adjusted according to the electrostatic voltage value through the voltage compensation circuit, that is, the electrostatic field at the fingerprint identification area is neutralized by the voltage compensation circuit through the reversed polarity electric field, so that the influence of the electrostatic on the pixel circuit at the fingerprint identification area is reduced, the driving current generated by the pixel circuit is ensured to be normal, the abnormal display condition of the display panel at the fingerprint identification area is further improved, and the display effect of the display device is improved.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (11)
1. The utility model provides a flexible line way board, flexible line way board is used for connecting display panel and control mainboard, display panel is regional including deviating from the fingerprint identification of its display surface one side, its characterized in that, flexible line way board includes:
the circuit area corresponds to the fingerprint identification area and comprises an electrostatic acquisition circuit and a voltage compensation circuit, and the electrostatic acquisition circuit is used for acquiring an electrostatic voltage value of a position of the electrostatic acquisition circuit corresponding to the fingerprint identification area; and the voltage compensation circuit is used for adjusting the electrostatic field corresponding to the position of the fingerprint identification area according to the electrostatic voltage value.
2. The flexible wiring board of claim 1, wherein the static electricity collection circuit comprises at least one static electricity collection plate distributed, and the voltage compensation circuit comprises at least one voltage compensation plate;
the static collecting polar plate and the voltage compensation polar plate are arranged in one-to-one correspondence and adjacent mode, and the static collecting polar plate is used for collecting sub-static voltage values of positions of the static collecting polar plate corresponding to the fingerprint identification area; the voltage compensation polar plate is used for adjusting the electrostatic field at the position corresponding to the fingerprint identification area according to the sub-electrostatic voltage value acquired by the electrostatic acquisition polar plate adjacent to the voltage compensation polar plate.
3. The flexible printed circuit board of claim 2, wherein the electrostatic collecting plate and the voltage compensating plate are disposed on the same layer, and wherein the electrostatic collecting circuit further comprises at least one first shielding ring, the first shielding ring corresponds to the electrostatic collecting plate one by one, and the first shielding ring is disposed around the electrostatic collecting plate.
4. The flexible printed circuit board of claim 2, wherein the electrostatic collecting plate and the voltage compensating plate are disposed on the same layer, and wherein the electrostatic collecting circuit further comprises at least one second shielding ring, the second shielding ring corresponds to the voltage compensating plate one by one, and the second shielding ring is disposed around the voltage compensating plate.
5. The flexible circuit board of claim 2, wherein the display panel comprises a plurality of sub-pixels corresponding to the fingerprint identification area, the electrostatic collecting circuit comprises a plurality of electrostatic collecting plates, and the voltage compensating circuit comprises a plurality of voltage compensating plates;
the electrostatic collecting polar plate and the voltage compensation polar plate which are arranged adjacently are respectively and correspondingly arranged at the two adjacent sub-pixels corresponding to the fingerprint identification area.
6. The flexible circuit board of claim 5, wherein the sub-pixels comprise anodes, and the electrostatic collecting electrode plate and the voltage compensating electrode plate which are adjacently arranged are respectively arranged corresponding to the anodes of two adjacent sub-pixels corresponding to the fingerprint identification area;
in the correspondingly arranged anode and the static collecting polar plate, the orthographic projection of the anode on the surface of the fingerprint identification area covers the orthographic projection of the static collecting polar plate on the surface of the fingerprint identification area;
and in the correspondingly arranged anode and the voltage compensation polar plate, the orthographic projection of the anode on the surface of the fingerprint identification area covers the orthographic projection of the voltage compensation polar plate on the surface of the fingerprint identification area.
7. The flexible wiring board of claim 2, wherein the circuit area further comprises a fingerprint identification module.
8. The flexible circuit board of claim 7, wherein the fingerprint identification module is disposed at a gap of the distribution structure of the electrostatic collecting circuit and the voltage compensation circuit;
or, when the flexible circuit board and the display panel are correspondingly arranged, the fingerprint identification module is arranged on the static electricity acquisition circuit and the voltage compensation circuit deviates from one side of the display panel.
9. The flexible printed circuit board of claim 7, wherein any one of the electrostatic collecting circuit, the voltage compensating circuit and the fingerprint identification module is electrically connected to the driving IC of the display panel or the control motherboard.
10. A display device, characterized in that the display device comprises the flexible wiring board according to any one of claims 1 to 9.
11. A method of manufacturing a display device, the method comprising:
providing a display panel and a flexible circuit board, wherein the display panel comprises a fingerprint identification area on the side away from the display surface of the display panel, and the flexible circuit board is the flexible circuit board in any one of claims 1 to 9;
a protective film is attached to one side of the display panel, which is far away from the display surface of the display panel, and the protective film is hollowed out corresponding to the fingerprint identification area;
and aligning and fixing the circuit area of the flexible circuit board with the fingerprint identification area.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011527104.XA CN112528933B (en) | 2020-12-22 | 2020-12-22 | Flexible circuit board, display device and manufacturing method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011527104.XA CN112528933B (en) | 2020-12-22 | 2020-12-22 | Flexible circuit board, display device and manufacturing method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112528933A CN112528933A (en) | 2021-03-19 |
| CN112528933B true CN112528933B (en) | 2022-09-27 |
Family
ID=75002309
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011527104.XA Active CN112528933B (en) | 2020-12-22 | 2020-12-22 | Flexible circuit board, display device and manufacturing method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112528933B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114093255B (en) * | 2021-10-26 | 2023-06-23 | 合肥维信诺科技有限公司 | Display screen, electronic device and method for removing static electricity of display screen |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009076431A1 (en) * | 2007-12-11 | 2009-06-18 | California Micro Devices Corporation | Impedance compensated esd circuit for protection for high-speed interfaces and method of using the same |
| CN103841754A (en) * | 2014-02-21 | 2014-06-04 | 宇龙计算机通信科技(深圳)有限公司 | Electronic device avoiding electromagnetic interference |
| CN204008809U (en) * | 2014-07-17 | 2014-12-10 | 中国石油化工股份有限公司 | Electrostatic potential testing sensor |
| WO2016181704A1 (en) * | 2015-05-13 | 2016-11-17 | コニカミノルタ株式会社 | Organic electroluminescence module and smart device |
| CN109979371A (en) * | 2019-04-15 | 2019-07-05 | 武汉华星光电技术有限公司 | A kind of display panel and device |
| CN110677982A (en) * | 2019-10-31 | 2020-01-10 | 武汉天马微电子有限公司 | Flexible circuit board and display device |
| CN111126351A (en) * | 2020-01-21 | 2020-05-08 | 北京京东方光电科技有限公司 | Fingerprint identification module |
-
2020
- 2020-12-22 CN CN202011527104.XA patent/CN112528933B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009076431A1 (en) * | 2007-12-11 | 2009-06-18 | California Micro Devices Corporation | Impedance compensated esd circuit for protection for high-speed interfaces and method of using the same |
| CN103841754A (en) * | 2014-02-21 | 2014-06-04 | 宇龙计算机通信科技(深圳)有限公司 | Electronic device avoiding electromagnetic interference |
| CN204008809U (en) * | 2014-07-17 | 2014-12-10 | 中国石油化工股份有限公司 | Electrostatic potential testing sensor |
| WO2016181704A1 (en) * | 2015-05-13 | 2016-11-17 | コニカミノルタ株式会社 | Organic electroluminescence module and smart device |
| CN109979371A (en) * | 2019-04-15 | 2019-07-05 | 武汉华星光电技术有限公司 | A kind of display panel and device |
| CN110677982A (en) * | 2019-10-31 | 2020-01-10 | 武汉天马微电子有限公司 | Flexible circuit board and display device |
| CN111126351A (en) * | 2020-01-21 | 2020-05-08 | 北京京东方光电科技有限公司 | Fingerprint identification module |
Also Published As
| Publication number | Publication date |
|---|---|
| CN112528933A (en) | 2021-03-19 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103034003B (en) | Display device | |
| CN111785853B (en) | Display panel and display device | |
| CN109064902B (en) | Display panel and display device | |
| CN111833720B (en) | Display panel and display device | |
| CN108461530B (en) | Array substrate and display device | |
| CN103383512B (en) | Liquid crystal disply device and its preparation method | |
| CN108732841A (en) | A kind of display panel and preparation method thereof, display device | |
| CN112466209B (en) | Display panel and display device | |
| CN102375277A (en) | Liquid crystal display device and method of manufacturing the same | |
| CN112711347B (en) | Display panel and display device | |
| CN104238224B (en) | Display panel and method for manufacturing the same | |
| US20230252930A1 (en) | Display panel and manufacturing method thereof | |
| CN111834375B (en) | Display substrate, display panel and display device | |
| CN111048004A (en) | Display panel and display device | |
| CN112528933B (en) | Flexible circuit board, display device and manufacturing method thereof | |
| CN110675744A (en) | Display panel and display device | |
| US20200355971A1 (en) | Panel, Manufacturing Method Thereof, and Terminal | |
| US11561634B2 (en) | Display module, fabrication method thereof and display device | |
| CN100444405C (en) | Double grid film electric crystal and pixel structure and its producing method | |
| CN111403460A (en) | O L ED display panel and display device | |
| CN114170905B (en) | Display device | |
| CN112133199B (en) | Display panel and display device | |
| CN113451376A (en) | Display panel | |
| CN218630456U (en) | Wiring structure of electronic paper display array substrate | |
| CN114578624B (en) | Array substrate and display panel |
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 | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |